LEFOO INDUSTRIAL CO.,LTD.

LEFOO STEPPER MOTOR PERISTALTIC PUMP(2024年04月07日)

lefoogroup — 2024-04-23T14:57:23+0900

https://www.lefoogroup.com/products/stepper-motor-peristaltic-pump/

LEFOO STEPPER MOTOR PERISTALTIC PUMP
Peristaltic pumps are very popular fluid transfer equipment with a wide range of applications. Peristaltic pumps can be classified according to the motor type into peristaltic pump with stepper motor, DC motor peristaltic pump, servo motor peristaltic pump, explosion-proof motor peristaltic pump, etc.

Stepper Motor Peristaltic Pump LFP101/ST
Stepper Motor Peristaltic Pump LFP302/ST
Stepper Motor Peristaltic Pump LFP401/ST

The stepper motor peristaltic pump, as the name suggests, is a peristaltic pump driven by a stepper motor. The stepper motor has good start-stop and reverse response, wide speed range and reliability, etc., and the lifespan can reach more than 100,000 hours. The small peristaltic pump can meet the low pulse and accurate and reliable flow control required by precision instruments.

Let's LEFOO peristaltic pump manufacturers take you to have a look:

There are also many types of stepper motor peristaltic pumps developed by LEFOO pressure control, which are often used in experimental fields.

The peristaltic pump using a stepper motor has the advantages of small size, long use time, stable flow and high accuracy. Adoptting ABS engineering plastics, our stepper motor peristaltic pump can be anti-corrosive and anti-static.

Lefoo RO Booster Pump 300 GPD(2024年04月06日)

lefoogroup — 2024-04-23T14:56:51+0900

https://www.lefoogroup.com/products/ro-booster-pump-300-gpd/

Lefoo RO Booster Pump 300 GPD
The RO pump of LEFOO is a new generation of Pressure Booster Pumps for water purifiers with production rates up to 300 gallons per day (47.3 liters per hour). Stable pressure feedings of 70 PSI with workflow ≧2700ml/min. Low current ≧2.4 A which saves 30% energy cost. This pump is super quiet when installed in water purifiers and other reverse osmosis systems. Durable quality from high-quality parts, low noise because of shock absorb base, save electricity power due to the excellent circuit design, increase the production rates of pure water while reducing the rejection water rate. CE RoHS approved, LEFOO is your reliable partner in micro pumping technologies.

Specification of RO Booster Pump 300 GPD
ModelLFP1300JLFP1300JDLFP1300W-PLFP1300WLFP1300JD-ALFP1300W-ALFP1300W-A-P
VoltageDC24V
Inlet Pressure0.2Mpa
Working Pressure0.5Mpa
Working Current≦2.3A≦2.4A≦2.1A
Working Flow≧2700ml/min≧2200ml/min
Open Flow≧4000ml/min≧3500ml/min≧3000ml/min
Bypass Pressure0.8~1.0Mpa
Maximum Current≦3.2A≦2.8A
Optional Connection3/8" Male Quick Connector3/8"NPT
3/8"NPT3/8"NPT "0"
3/8"NPT "0"3/8"Side Female Quick Connector
3/8"Side Female Quick Connector3/8"Top Female Quick Connector
3/8"Top Female Quick Connector
CertificationsNSF, CE, ROHS, REACH, EU Food Grade

Features of RO Booster Pump 300 GPD

High water preventing level.

Compliant with CE, Rohs, CQC certifications.

Large flux water outlets with stable pressure and long working life.

Compact structure consists of robust plastic and metal components.

DC Powered strong impetus motor with low noise, low vibration level.

Whole process quality controls in processes of electrical, sealing, and pressure boosting.

Applications of RO Booster Pump 300 GPD
RO diaphragm booster pump 300 GPD are generally used in The pump also can be used in Drinking water chillers; Drinking water coolers; Carbonated Drink Machine; Beverage machine; Reverse osmosis system; medical water purifier; Laboratory water purifier

Carbonation beverage for restaurant,

Espresso Coffee Machine

Water Dispensing and vending

Hydroponics VS Aeroponics

Misting Systems for home

Kitchen/Room Sanitation

Autoclave Systems

Endoscope Reprocessing

Methanol & Water Injection

Humidification System

HVAC system Cleaning

Biopharmaceutical Water

Chemical Boost/Dialysis Chemical Injection

Water Treatment/RO

Carbonation Systems

Beverage/Coffee Systems

Water Vending, Dispensing

Hydroponics/Aeroponics

Misting Systems

Surface Sanitation

Humidification

HVAC Coil Cleaning

Medical Lab Water

Autoclave Systems

Endoscope Reprocessing/Chemical Boost

Dialysis Chemical Injection

Methanol & Water Injection

Sparkling Water Machine

Commercial Sparkling Water Machine

Commercial Carbonated Water Machine

Carbonation Systems

Commercial Water Dispenser

Water Dispensers

Soda Machine

RO Purifier

RO Water Dispenser

Water Coolers

Misting System

Teeth Cleaning Industry

If you want to know more kinds of duct pressure sensor, please visit our website.

LEFOO HVAC PRESSURE SWITCH(2024年04月05日)

lefoogroup — 2024-04-23T14:56:22+0900

https://www.lefoogroup.com/products/hvac-pressure-switch/

LEFOO HVAC PRESSURE SWITCH
Pressure Range: <16Bar~47Bar
Adjustable Pressure Setting
One-piece interface welded bellows element
Fast rebound function, Low abrasion and Durable
High reliability electrical & mechanical performance

HVAC Pressure Switch LF58
A digital thermostat is not the ideal solution for some refrigeration systems. When the compressor is started, refrigerant vapor transform into high-temperature high-pressure fluid and enter the condenser where most of the heat is rejected, the refrigerant flow leaves the condenser and arrive the evaporator there undergo a sharp temperature and pressure drop, the cold air will enter the refrigeration chamber, the refrigerant flow will be heated by the rejected heat and return to vapor. The low-pressure setting of low pressure switch hvac can be used to control the temperature because the pressure proportional related to the temperature in the refrigeration system. Hence, a simple mechanism from lefoo pressure switch manufacturer, will help in this area.

THERE ARE SOME ADVANTAGES TO LEFOO PRESSURE SWITCH HVAC. ELECTRICITY-FREE, WIRING IS SIMPLIFIED AND COST LESS WHEN INSTALLED.
1. Some tips for LF55, LF58 hvac pressure switch

Wrong install pressure switch relief valve between the bottom manifold and hvac pressure switch itself will cause back pressure and pressure leakage. There is a diaphragm(0.15mm tin bronze disc)and a Nitrile rubber O-ring to seal the spring trigger. Be careful with the diaphragm when using a pressure switch on a fluid pipeline or liquid tank, because it's hard to mend pressure exactness after the liquid leak into the hvac pressure switch. Inside the spring is a threaded galvanized iron stud that will trigger a nylon PA66 covered electric bridge (durability of 100 thousand times).

2.The cut-in and the cut-out pressures setting

Cut in and cut out pressures will mechanical control the work time when a hvac pressure switch is installed. Usually, it is advantageous to keep the refrigerating system work a long period and rest a long interval for energy efficiency.

TO SET CUT IN AND CUT OUT PRESSURES NEED TO KNOW
The lowest temperatures of refrigeration chamber or chilling room.

The temperature difference between the chamber temperature and the refrigerant temperature in the evaporator.

Start time and temperature boost range of the compressor.

The pressure differences at the evaporator output and the compressor input.

We can also offer kinds of differential pressure transducer for sale, if you have needs, please contact us.

LEFOO HVAC PRESSURE SWITCH(2024年04月04日)

lefoogroup — 2024-04-23T14:55:53+0900

https://www.lefoogroup.com/products/hvac-pressure-switch/

THERE ARE SOME ADVANTAGES TO LEFOO PRESSURE SWITCH HVAC. ELECTRICITY-FREE, WIRING IS SIMPLIFIED AND COST LESS WHEN INSTALLED.
1. Some tips for LF55, LF58 hvac pressure switch

2.The cut-in and the cut-out pressures setting

TO SET CUT IN AND CUT OUT PRESSURES NEED TO KNOW
The lowest temperatures of refrigeration chamber or chilling room.

The temperature difference between the chamber temperature and the refrigerant temperature in the evaporator.

Start time and temperature boost range of the compressor.

The pressure differences at the evaporator output and the compressor input.

Now the price of hvac pressure sensor and hvac pressure transducer is reasonable, if you have needs, please contact us.

If you want to know more kinds of differential pressure sensor hvac, please visit our website.

LEFOO HIGH ACCURACY PRESSURE TRANSMITTER(2024年04月03日)

lefoogroup — 2024-04-23T14:55:16+0900

https://www.lefoogroup.com/products/high-accuracy-pressure-sensor/

High Accuracy Pressure Transmitter LFT2010
High accuracy pressure transmitter applies a silicon strain diaphragm embedded in an oil-filled steel housing and the repeatable & low hysteresis properties of silicon are exploited by the difference normalization digital amplifier to provide precision optimized measurement results around the ambient temperature range. A four Wheatstone bridge is diffused into a silicon wafer and then micro-machined to exacting standards to produce a pressure sensor.

APPLICATION OF LEFOO HIGH ACCURACY PRESSURE TRANSMITTERS
In Lefoo, one of the top differential pressure transmitter suppliers, Through a high precision and long-term stability, these high accuracy pressure transducers and transmitters are particularly suited for applications in flow or in any facility where high-precision measurement is required. They are used as pressure measuring devices in modern automated industries for higher energy efficiency and longer equipment lifespan. These characteristics make it a valuable tool in metrology, hydrology, oceanography, and industries.

LEFOO HIGH ACCURACY PRESSURE TRANSMITTER
Industrial High Precision Pressure Transmitter
Pressure Type: Gauge / Absolute
Pressure Range: 0~7MPa / 0~4MPa
Pressure Accuracy: 0.25%FSO / 0.1% FSO
Output: 4~20ma/ 0~5V/ 0~10V RS485

LEFOO HIGH PRECISION PRESSURE TRANSMITTER HAS THE APPLICATIONS AS BELOW
Testing technology

Calibration technology

Geoscience/hydrology

High accuracy pressure sensing in original equipment manufacturing (OEMs)

Aerospace / Military

Laboratories and maintenance shops

Leak and burst applications

Wind tunnels

Level monitoring

OEM / Test Bench

Aviation

FACTORS IMPACT ON THE HIGH PRECISION PRESSURE TRANSMITTERS ACCURACY
Accoring to lefoo, There are many factors that influence the choice of a sensing device in a certain application. Gauge pressure sensor, absolute or differential, transducer or transmitter, measurement range, fitting style/size, and absolute maximum ratings such as burst pressure are among the most important.

FACTORS AFFECTING HIGH PRECISION PRESSURE TRANSMITTERS ACCURACY
Making the right choice can then be guided by considering factors that affect accuracy. The major high accuracy pressure transducers characteristics that influence accuracy are temperature coefficients, temperature hysteresis, pressure hysteresis, and non-linearity. Applicable temperature coefficients include temperature-related changes to zero offset, sensitivity, and measurement span.

TEMPERATURE ERROR OVER 85°C OF HIGH ACCURACY PRESSURE TRANSMITTERS
The LFT2010 high accuracy pressure transmitter for a high-temperature application over 85 °C will cause permanent damage to accuracy. The ideal working temperature is within the range of -10°C to 70°C. For example, there are some common high precision pressure sensor on the market with 0.5% accuracy( not LEFOO products). The 0.5% FS accuracy does not include the permanent temperature error which is an additional 0.02%X3=0.06% per degree per second.Celsius.The extremely high temperature will ruin the accuracy and the sensor in seconds.

To reduce this additional temperature error and assuming you have the ability to calibrate the sensor when the temperature is between 80 and 90°C, LEFOO pressure control treats the error from room temp up to 90℃ as a calibration shift since you are only interested in optimizing performance between 80 and 90°C. So the easiest way to reduce the temperature error is to check the output signal at zero and full-scale pressure when the temperature is at its mid-point 85°C. If you are not able to set full-scale pressure, an even simpler method is to just check the zero shift at 85°C since most of the thermal error is typically contributed by the thermal zero shift.

LEFOO CUSTOM HIGH ACCURACY PRESSURE TRANSMITTERS
LEFOO offer ODM and OEM pressure transducers that have excellent long-term stability, linearity, repeatability. LEFOO can also supply custom-configured banks of transducers in calibration test carts, racks, or benches to fulfill a specific need for flexibility in pressure range and temperature compensation.

The custom systems can contain a variety of components including controlling software, pressure controllers, pressure switch and any customer-specified ancillary equipment necessary.

LEFOO DIGITAL PRESSURE SWITCH(2024年04月02日)

lefoogroup — 2024-04-23T14:54:24+0900

https://www.lefoogroup.com/products/digital-pressure-switch/

LEFOO DIGITAL PRESSURE SWITCH
Pressure Range: -100~100kpa
Pressure Accuracy: 1%FSO
Work Temperature: 0~50 °C
Measure media: Non-corrosive dry gas
Output: digital 4~20ma/1~5V, Swith NPN /PNP

Digital Pressure Switch LFDS10
Digital Pressure Switch LFDS62
Pressure Controller LFDS63
Pressure Switch Controller LFDS65

LEFOO DIGITAL PRESSURE SWITCH PRESSURE MEASUREMENT
The piezo-resistive works on a Wheatstone bridge principle that will undergo deformation due to pressure on its area and change resistivities on 4 bridges, this is called the piezo-resistive effect. Usually, four strain gauges are embedded and connected to a Wheatstone bridge. The signal amplifier amplifies the measuring signals from the strain gauge and Wheatstone bridge and synchronously optimizes the results, and the results are transferred by the squeezing electric power of the silicon wafer.

The digital air pressure switch is used to replace electric contact pressure gauges and used in systems with higher requirements for industrial control. This digital LEFOO pressure switch has a wide application in monitoring and controlling the flow of air and aggressive gases. For the consideration of environment friendly and less contaminant we did not use oil-extended silicon sensor. This digital pressure switch is built in a plastic housing and it might undergo deformation when encounter extreme huge pressure and influence its accuracy. The digital pressure switches made by Lefoo is mainly based on diffused silicon piezoresistive sensor and electric circuit bridge in the relay, that provides both pressure measurement and simple control movement.

The digital pressure switch has a built-in differential air pressure sensor, which amplifies the pressure signal through a high-precision instrument amplifier, collects and processes data through a high-speed MCU, and generally uses a 4-digit LED to display the pressure in real time, and the relay signal output. The upper and lower limit control points can be set freely.

LEFOO DIFFERENTIAL PRESSURE TRANSMITTER(2024年04月01日)

lefoogroup — 2024-04-23T14:52:19+0900

https://www.lefoogroup.com/products/differential-pressure-transmitter/

A differential pressure transmitter is a device for monitoring pressure changes at two positions

Differential Pressure Transmitter LFT2050
A differential air pressure transmitter is composed of a pressure sensor unit (silicon wafer or ceramic-based), a circuit board to convert pressure into a basic charging signal, and a signal amplifier. The unit has two pressure chambers separated by a diaphragm. The differential pressure transducer can measure the pressure difference of the two chambers. We call one chamber the positive-pressure side and the other the negative-pressure side. The circuit board will memorize the shape change of the diaphragm powered by the silicon wafer or ceramic base, which converts the pressure applied onto the diaphragms into an electrical signal.

Typically differential pressure sensors have two ports to which pipes can be attached and connected to the system in two distinct pressure points from where the differential pressure can be measured and calculated. Because industrial sensors are used in systems that require high levels of functional safety and robustness, the interfaces they offer can seem a little unusual. Which used in the right application will provide years of reliability and ease of maintenance.

DIFFERENTIAL PRESSURE SENSOR APPLICATIONS

Differential Pressure Sensor

Differential pressure sensors should only measure fluids with densities that don’t change with temperature variation since this will disturb the precision of your measurement. A good differential pressure will ensure that the differential pressure is measured accurately independent of other changing parameters and will reliably transmit a signal to represent the differential pressure. Lefoo, China leading pressure transmitter manufacturer, designs and manufactures high accuracy, robust differential pressure sensor transducers that may involve extremes of pressure, and hazardous areas Such as

Filter monitoring

Sprinkler Systems

Pump control monitoring

Pressure drops across valves.

Water and effluent treatment plants

Heating Systems for Steam or Hot Water.

Pressure drops across valves can be monitored.

ventilation and air-conditioning (HVAC) industry

Oil and Gas flow metering in onshore, offshore, and subsea applications

In the medical field, differential pressure sensors are used for the treatment of deep vein thrombosis, infusion pumps, and respirators, and breathing detection equipment.

LEFOO DIFFERENTIAL PRESSURE PRODUCTS(2024年02月22日)

lefoogroup — 2024-02-22T15:58:49+0900

https://www.lefoogroup.com/products/differential-pressure-products/

LEFOO differential pressure transmitter at the pressure ranges of 0～±100Pa, 0～±1,000Pa, and 0～±10,000Pa.LCD digital display 25+ years manufacturing Expert, Contact LEFOO to get the Best differential pressure transmitter price
BRIEF INTRODUCTION OF LEFOO DIFFERENTIAL PRESSURE TRANSMITTER
Versatile LFM108 differential pressure transmitter ranges from 0~ +50 Pa to 0~ +10 KPa. And customized 34 kpa measuring span is available (HVAC compressor with hvac differential pressure sensor, low-pressure end of gas energy industry ).

Digital differential pressure transmitter LFM31 with buttons and display is employed for measuring system air pressures, which is available for the user to select appropriate options when observing environmental air pressure changes, Versatile LFM32 Air pressure transmitters are available with the compound version of the outputs signal. While LFM30 is only available for one type from 0~5V,0~10V, 20ma, or RS485.

The differential pressure transmitter uses the piezoresistive effect of the conductor silicon material of the differential pressure sensor/transducer to realize the conversion between the differential pressure and the electrical signal.

The low differential pressure transducer made by LEFOO pressure control is ideal for the application of monitoring the vacuum pressure, a gauge pressure of air with differential pressure, such as natural gas, and especially low pressure of non-corrosive gases.

DP 810 differential pressure sensor hvac is capable of pressure measurement for media such as liquid, solution, oil, glue, chemicals, petroleum gas.

High exactness and long stability are vital for an energy-efficient, well-functioned air ventilation system. LEFOO comes in different models where the most advanced models help you save installation time and cabling through quick and easy assembly steps, which features as below:

1. One air differential pressure transmitter instead of two! Each transmitter holds two pressure inputs. High exactness measurement. High water-resistance functions. Lightning protection.

2. Easy installation, there is plenty of space in the cover and that it is easy to access the wiring.

Vertically or horizontally, No need to worry about placement or hassle during installation. LEFOO differential pressure transmitters have mounts, which gives you great flexibility.

Application and Common Problems of RO Booster Pump in the System (Water Purifier)(2024年02月22日)

lefoogroup — 2024-02-22T15:58:10+0900

https://www.lefoogroup.com/application-and-common-problems-of-ro-booster-pump-in-the-system-water-purifier.html

The main components of RO water purifier pump are generally: front PP cotton, front water inlet solenoid valve, low pressure switch, front activated carbon, middle PP cotton, ro motor pump for water purifier, RO reverse osmosis membrane, wastewater ratio, backwash electromagnetic Valves, high-pressure switches, pressure barrels, rear activated carbon, gooseneck faucet, etc.

Ⅰ. CLASSIFICATION OF RO BOOSTER PUMPS (BY PERFORMANCE)

At present, there are probably: ordinary (second generation) booster pumps, stabilized booster pumps, and self-priming booster pumps. (Note: Mini pumps and RV pumps are not RO water pumps, they are only used for water supply machines).

Ordinary (second generation) RO water booster pump-RO water booster pump without other auxiliary functions;

Stabilized (pressure-limiting) booster water pump-Compared with ordinary booster water pumps, it has an independent pressure relief device. Its function is to discharge the pressure greater than the set pressure relief value, thus playing the role of pressure limiting;

Self-priming booster water pump——Because the water inlet pressure of this pump type is 0 when in use, in order to meet the water production requirements of the water purifier, its power must be increased. Moreover, the hardness of the pressure relief spring should be adjusted accordingly. We have many advanced products concerned with LEFOO pressure control for you to choose from.

Water cut-off booster pump-Compared with ordinary RO booster pumps, there is an additional mechanism that can automatically open or close the water source.

RECOMMENDED BOOSTER PUMP FOR RO SYSTEM
100 gpd pump-ro booster pump 100 GPD include RO Booster Pump 100 GPD and Self-priming RO Booster Pump 100 GPD

150 gbd pump-150 gpd ro booster pump include RO Booster Pump 150 GPD and Self-priming RO Booster Pump 150 GPD

300 gpd pump-300 gbd reverse osmosis booster pumps include RO Booster Pump 300 GPD and Self-priming RO Booster Pump 300 GPD

Ⅱ. THE INSTALLATION POSITION OF THE RO BOOSTER PUMP IN THE SYSTEM

1. Install after the pre-filter assembly.

2. Install after the first filter.
Ⅲ. COMMON FAULTS IN THE USE OF RO BOOSTER PUMPS

1. The pump head of the RO booster pumps is leaking;

2. There is abnormal noise;

3. The boost pressure (working flow) is low;

4. Large working current.

Ⅳ. REASONS FOR COMMON FAILURES OF RO BOOSTER PUMPS DURING USE

1. Water leakage in the pump head: It is mostly because the working time of the RO pressure pump is too long or the working pressure is too high, which causes the diaphragm to rupture or deform and cause water leakage;

2. The RO water booster pump has abnormal noise:

(1) The use of the RO water pump is too long or the working pressure is too large, causing the rotating parts to loosen and generate noise;

(2) Unstable inlet pressure leads to uneven working load of the RO pressure pump and noise;

(3) When the user is installing, the fixing screws of the base are not tightened and noise is generated.

3. Low boost pressure (working flow)

(1) The inlet water pressure is too low;

(2) Air enters the booster chamber of the RO water pump;

(3) The ratio of wastewater is unreasonable.

4. The booster pump for water purifier system has a large working current

(1) Mostly the working load (pressure) of the water purifier booster pump is too large;

(2) The motor rotor is stuck. (This phenomenon is generally caused by the excessive inlet pressure of the water purifier booster pump, the waste water ratio or the blockage of the RO membrane.)

Most Popular Articles
Why is the Booster Pump of the Water Purifier Easy to Break?-booster pump for water purifier

The Function and Application of Booster Pump for Water Purifier: external booster pump for water purifier

How to Solve the 5 Major Problems of Booster Pump for Water Purifier: pump for water purifier

The Classifications and Working Principles of RO Booster Pump: RO water purifier pump

How to Adjust the Water Pump Pressure Switch?: water pump pressure switch

We can also offer sorts of peristaltic metering pump for sale, if you are interested, please contact us.

The Classifications and Working Principles of RO Booster Pump(2024年02月22日)

lefoogroup — 2024-02-22T15:57:37+0900

https://www.lefoogroup.com/the-classifications-and-working-principles-of-ro-booster-pump.html

RO pump is also known as ro water pump , RO diaphragm pump, reverse osmosis booster pump, and is a type of DC diaphragm booster pump. It is currently one of the core parts of the water purification industry and household water purifiers.

Ⅰ. DEFINITION OF LEFOO RO BOOSTER PUMP

Best ro booster pump is the booster pump used in reverse osmosis equipment. It has the functions of self-priming and pressurization and is one of the key and important components of the RO water purifier. The RO booster pump is another important component of the RO membrane in the RO water purifier, which provides the water pressure and water flow required for its work, so as to achieve the purpose of the ro water purifier pump to produce pure water.

Ⅱ. CLASSIFICATION OF RO BOOSTER PUMPS

1. According to RO membrane water production specifications, it can be classified into two categories. The first type is household type. The corresponding pumps of the "national standard RO membrane" have 50 gallons, 75 gallons, and 100 gallons(100 gpd pump), which are also called household RO booster pumps. The other type is the pump corresponding to the "non-standard commercial large flow RO membrane", including 150 gallons(ro booster pump 150 gpd), 200 gallons, 300 gallons, 400 gallons, etc., also known as RO booster pumps for business machines. Generally, commercial machines are equipped with better accessories. So if you are going to buy the best RO filter pump, the key is to figure out its configuration.

2. Classified according to the environment of use, it can be divided into ordinary RO booster pumps and 0-pressure RO booster pumps for municipal water pressure zones. The 0-pressure ro motor pump is mainly used in rural areas and other areas with no water pressure and low water pressure. It is also called a 0-pressure pump (or self-priming pump).

3. Classified by function, the market mainly includes ordinary RO booster pumps, RO stabilized pumps with stable water pressure, RO water cut-off pumps with the function of automatic water cutoff and replacement of the water inlet solenoid valve in the RO water purifier system.

Ⅲ. WORKING PRINCIPLES OF RO FILTER PUMP

What is the working principle of the best Ro booster pump, please continue to read on. The booster pump for RO system uses a DC motor as a power drive device. After the power is turned on, the motor rotor rotates, driving the eccentric swing wheel to perform the eccentric motion, and then transforms it into a three-cam water scaffold assembly closely connected with the eccentric swing wheel to reciprocate, driving the diaphragm to perform reciprocating motion at the same time, and produce a reciprocating motion on the valve cover. Reciprocating suction and squeezing phenomenon.

When the cam water kicking bracket assembly moves from top to bottom, the booster chamber produces a vacuum effect. Under the action of vacuum suction, the water inlet one-way valve is opened and water is sucked into the booster chamber. When the motor rotates to a certain angle, the cam water kicking bracket assembly gradually changes from the original top-down movement to the bottom-up movement, squeezing the sucked water upwards. Under the action of squeeze pressure, the water inlet one-way valve is positively sealed, and the water can only be discharged in the direction of the high-pressure chamber. When the pressure is greater than the reaction force of the water outlet one-way valve, the water outlet one-way valve is opened and the water is discharged to the high-pressure chamber.

The continuous rotation of the motor makes the diaphragm of the RO booster pump continue to reciprocate, completing the purpose of pumping and boosting water. To learn more about water booster pump , please contact Lefoo.

Most Popular Articles
Why is the Booster Pump of the Water Purifier Easy to Break?-booster pump for water purifier

The Function and Application of Booster Pump for Water Purifier: external booster pump for water purifier

How to Adjust the Water Pump Pressure Switch?:-water pump pressure switch

How to Solve the 5 Major Problems of Booster Pump for Water Purifier: pump for water purifier

Application and Common Problems of RO Booster Pump in the System (Water Purifier): booster pump for RO system

If you want to know more kinds of peristaltic dosing pump, please visit our website.

LEFOO SODA PUMP DISPENSER(2024年02月22日)

lefoogroup — 2024-02-22T15:57:05+0900

https://www.lefoogroup.com/soda-water-dispenser.html

A soda pump dispenser can get you cold soda water, and RO pumps are optimal for liquid transfer such as soda waters.

If you want to know more sorts of differential pressure transducer, please visit our website.

RO WATER PURIFIER(2024年02月22日)

lefoogroup — 2024-02-22T15:56:42+0900

https://www.lefoogroup.com/ro-water-purifier.html

When the water finishes the pre-treatment process, most of the primary contaminants are left in the filters.Pure_Water_Machine.jpg

However, the original water pressure will drop below 30PSI, Most of the RO membranes require at least 60 PSI

of actual water pressure to exert the best filtering effect. Reverse osmosis RO motor pump becomes a vital

device in RO Water Purifier to add pressure to water.

In Lefoo, An ro water purifier pump will remove more than 98% of contaminants from the drinking water as below

PRIMARY CONTAMINANTS

Microorganisms,Cyclospora,Viruses,Giardia,Legionella,Inorganic Chemicals,Barium,Chromium,Fluoride,

Selenium, Copper, Lead, Mercury, Nitrate, Cyanide, Organic Chemicals, Benzene, Carbon Tetrachloride,

Disinfection Byproducts, Bromate, Disinfectants, Chlorine, Radionuclides, Uranium, Radium

SECONDARY CONTAMINANTS

Aluminum, Color, Iron, Manganese, Odors, Sulfate, Total Dissolved Solids (TDS), pH

UNREGULATED CONTAMINANTS

Ammonia, Boron, Calcium, Nickel, Pesticides

PFOA & PFOS

Prescription Drugs, Silica, Algae

If you want to know more kinds of hvac differential pressure sensor, please visit our website.

LEFOO WATER PRESSURE TRANSMITTER(2024年02月22日)

lefoogroup — 2024-02-22T15:56:20+0900

https://www.lefoogroup.com/products/water-pressure-sensor/

Digital Drinking Water pressure sensors are frequently used for inlet and outlet water pipe pressure measurement in clean water systems at public utilities.
LEFOO WATER PRESSURE SENSOR AND WATER PIPE PRESSURE MEASUREMENT
Water pipe pressure sensors are frequently used for inlet and outlet water pipe pressure measurement in clean water systems at public utilities. Some water systems are fed by the gravity flow of the water, usually, lift stations pump the water to a higher elevation to provide reliable gravity flow. Water pressure in the pump well, water tower needs to be monitored by a water differential pressure sensor to control the predetermined water flow rate at the pump input, which turns off the pump at a minimum flow rate to prevent empty run damage. Also, pump well and water tower that undergoes a large release of water require water supplement. Pressure sensors for water pumps offer reliable pressure measurement for the pump and the observer can determine when to adjust additional pressure and flow by the measured values.

A drinking water pressure sensor is generally placed in a position such as:

The water input side of the drinking water differential pressure sensor

Pump output side

Clean end location (pump wet well, elevated pipe...)

In Lefoo, pressure transmitter manufacturer, there is an important part of digital water pressure sensor selection is ensuring that any electronic transducer transmitter used is compatible with potable water. Pressure transducers are responsible for monitoring the pressure, at various locations throughout clean water systems and often interface with pumps to show, when increased pressure or flow rates are necessary.

HOW TO SELECT A DRINKING WATER PRESSURE TRANSDUCER
Water pressure transducers can measure pressure in several different ways:

1. Absolute pressure VS gauge pressure vs Differential pressures
Absolute water pressure is measured against vacuum or pressure-free.

Gauge pressure measures water pressure under atmospheric pressure. A vent tube is used to allow air to enter the sensor. The vent line can often be run through the power cable supplying the drinking water pressure sensors.

Differential pressures show the difference between inlet and outlet close to the pump with hvac differential pressure sensor, or in two water towers, or two water pipes. You can use differential pressure sensor to measure pressure drops across filters or measure flow rates by measuring the difference in pressure across a restriction.

2. Technology of water pipe pressure sensor
In Lefoo, Water pressure sensors or transducers apply an oil-extended silicon unit, the unit contains a crystal chip made of diffused silicon, which bends as pressure is applied and generates electrical power. There is a diaphragm close to strain Wheatstone Bridge, which changes its resistance on 4 lines when force is in contact. This Wheatstone Bridge is used to modify the output voltage of the drinking water pressure sensors. Some pressure sensor for water pump provide zero-based outputs, the zero pressure occurs when no actual flow happens. When water flows through the sensor it will generate voltage signals.

HOW DOES DIGITAL WATER PRESSURE SENSOR WORKS FOR SEWAGE TREATMENT?
The sewage water is the wastewater used by the community. It is black or grey water and has a foul smell. In order to clean the wastewater from contaminants, we perform the sewage treatment using a water pipe Pressure Sensor for Sewage Treatment.

Therefore, to remove these contaminants, different chemical processes take place. The three process steps of Sewage treatment are:

Primary Treatment (temporary holds the sewage, the settled and floating particles are removed and then released for secondary treatment)

Secondary Treatment (to remove dissolved and suspended biological matter)

Tertiary Treatment (final cleansing process)

Fourth Treatment Stage: water pipe pressure sensor for sewage treatment

Digital water pressure sensor for water pumps: Sewage Treatment Steps?

The sewage treatment procedure includes the following step;

Methods to treat sewage by digital water pressure sensor:

The four common methods to treat sewage are:

Physical Water Treatment

Biological Water Treatment

Chemical treatment

Sludge Treatment

Use of Water Pipe Pressure Sensor for water pumps:
We use water pipe pressure sensors for measuring the pressure of gas or liquid and variables such as the flow of liquid or gas, speed, water level, and elevation.

A water pipe pressure sensor is an electronic device. We also use it to detect, regulate, and monitor pressure. In addition, it converts pressure into an analog electrical signal.

Moreover, the pressure sensor converts the perceived data into an electronic signal.

TECHNOLOGIES USED BY WATER PRESSURE SENSOR FOR WATER PUMPS SEWAGE TREATMENT.
There are 6 major technologies used by pressure sensors for sewage treatment:

Potentiometric pressure sensors

Inductive pressure sensors

Capacitive pressure sensors

Piezoelectric pressure sensors

Strain gauge pressure sensors

Variable Reluctance pressure sensors

LEFOO PIEZOELECTRIC WATER PIPE PRESSURE SENSORS:
These sensors rely on the ability of the materials. Also, their purpose is to generate an electrical potential when you subject the material to mechanical stress. We call this process the piezoelectric effect.

Water Pipe Pressure sensors are of four types;

Aneroid Barometer Sensors

Manometer Sensors

Bourdon Tube Pressure Sensors

Vacuum Pressure Sensors

Water pipe pressure sensors, or water pressure transducers produced by LEFOO company, are used in residential, commercial clean water distribution utilities for water elevated piping pressure measurement. The inlet and outlet water Pipe pressure measurement in water treatment facilities and water purify industries is very important, in the wastewater treatment industry, the measurement of water flow is also vital. Water pressure transducer is also applied in irrigation systems. LEFOO offers various pressure sensors and transducers with excellent accuracy and long-term stability. There is some basic information in this content to review before making a decision on the type of pressure sensor is required.

WATER PIPE PRESSURE SENSOR TECHNOLOGIES USED TO NEUTRALIZE WATER?
The modern manufacturing process relies partially on water. On the elementary level, water is essential to turn raw materials into basic manufacturing resources. Furthermore, water is also required to clean, combine and transform them into daily life products.

During the process, water becomes wastewater due to its exposure to contaminants so it has to go through other rigorous treatments before you release it into natural reservoirs.

Moreover, most of the Industrial factories are now doing on-site treatment of wastewater to cut the costs, and to recycle it back to the manufacturing process.

Moreover, the wastewater cleaning process is based on multiple steps. This process cleanses water from harmful bacteria, chemicals, organic and inorganic compounds of water.

Following are the technologies used to neutralize water and to remove impurities from water;

Reverse Osmosis System

Ultrafiltration System

Vacuum Evaporators

Vacuum Filters

Paper bed Filters

Solid Bowl Centrifuges

Tramp Oil Separators

Types of Instruments Used for Sewage Treatment:

To treat waste water the Industrial manufacturers used the 4 types of basic instruments;

Level Instruments

Flow Instruments

Water Quality Monitoring Instruments

Pressure Instruments

Level Instruments:
We use level instruments to maintain liquid and gas levels in pipes, tanks or silos in wastewater treatment systems.

Usually, treatment pipes are difficult to access because they are opaque so the system operators depend on level radar, sensors, and transducers to monitor the level of water.

In addition, switches are normally connected with the alarms, pumps, or controllers to adjust the incoming flow of water and gas.

Flow Instrument:
Flow instruments are used for two main purposes:

To determine the amount of gas or liquid present in the pipe.

To check the rate at which the gas or liquid is moving through the vessel.

The flow instruments are installed inside the treatment pipes. They measure the volume and mass of gas or liquid at consistent time intervals.

The flowing instrument might be;

Variable area meter

Mechanical flowmeters

Magnetic flowmeters

Thermal flowmeters

And, pressure-based meters.

Pressure Instruments:
Pressure Instruments include;

Transmitters

Sensors

Transducers

Gauges

It is possible to install pressure instruments on the inside of the waste treatment pipes, pumps, and reservoirs.

In addition, these pressure instruments help industries to maintain safe pressure levels and also prevent equipment failure.

Water Quality Monitoring Instruments
These instruments are integral for industrial wastewater treatment. Water also needs to pass the national and local cleanliness standards to be released in the sanitary sewers.

To measure the treatment process, you need to install the water quality instruments inline. The type of meter required per phase depends on the testing environment.

The system in question is also a matter of concern in this regard.

MORE CUSTOM PRESSURE SENSORS SOLUTIONS
Refrigeration pressure sensor: Refrigeration systems often encounter with latent facility faults and inefficient temperature management.

Flat pressure sensor: Flat pressure sensors are widely used in a variety of industries such as petrochemical, water purify ink, paint, mud and Dairy products with a certain possibility of viscous measurement.

LEFOO TEMPERATURE AND HUMIDITY SENSOR(2024年02月22日)

lefoogroup — 2024-02-22T15:55:47+0900

https://www.lefoogroup.com/products/temperature-and-humidity-sensor/

A temperature and humidity transmitter is an electronic device that measures both the temperature and humidity of the ambient environment and converts them into resistance variation signals to an electronic...
A Temperature Humidity sensor is an electronic device that measures both the temperature and humidity of the ambient environment and converts them into resistance variation signals to an electronic circuit that can register the changes and transmit them to higher grade signals that the machines can read. Those digital signals also can show on the LCD that offers real-time pressure reading. The digital Humidity and temperature Transmitter of Specific polymer combined with calibration slope and offset skills.

WHAT ARE TEMPERATURE AND HUMIDITY
Temperature is a physical quantity used to measure the degree of heat and coldness of objects. Temperature is one of the 7 basic physical quantities in the International System of Units,

Humidity is the concentration of water vapor present in the air. The relative humidity of air is commonly expressed in %RH. The relative humidity is closely related to temperature. For a certain volume of sealed gas, the higher the temperature, the lower the relative humidity.

TEMPERATURE AND HUMIDITY TRANSMITTER APPLICATIONS
Temp and humidity Transmitters are important pressure transducer transmitters where optimum temperature and humidity control are paramount. There are Temperature and humidity Sensor applications in many industries including medical, HVAC, agriculture, manufacturing industries, and transportation. This feature protects data, equipment, and other tangibles in cases when for example air conditioning malfunctions or abnormal weather conditions occur. In many applications where maintaining a specific temperature and humidity is vital there the temperature sensor is used.

Temperature and humidity Transmitter. It uses a humidity thermistor and a temperature thermistor-based probe to measure the surrounding air, temperature and humidity are closely related from the physical quantity itself to the actual people’s lives. The ambient temperature and humidity will directly affect people’s body temperature function and heat volatilization. For example, if products must be kept at a certain temperature and humidity or for patient monitoring, the responsiveness and accuracy of the temperature sensor are critical.

INTELLIGENT TEMPERATURE AND HUMIDITY TRANSMITTERS IN FUTURE
After the introduction of the Internet, wireless networks, and programming technology, a huge development happened between PLC or DCS technology in past decades.it is possible to control the remote temperature and humidity measurement device or controller through a WIFI-connected pad or smartphone to achieve accurate air management. LEFOO Temperature & Humidity Sensor is small in size but precise on measurement to any automating heating, cooling, or air health. Finding the most convenient temperature and humidity monitoring solutions by LEFOO can be the best decision for you.

We can also offer sorts of differential air pressure sensor for sale, if you have needs, please contact us.

LEFOO SODA PUMP DISPENSER(2023年04月07日)

lefoogroup — 2023-04-07T18:21:40+0900

https://www.lefoogroup.com/soda-water-dispenser.html

A soda pump dispenser can get you cold soda water, and RO pumps are optimal for liquid transfer such as soda waters.

Now the price of peristaltic dosing pump is reasonable, anything you need, please contact us.

LEFOO WATER PRESSURE SENSOR(2023年04月07日)

lefoogroup — 2023-04-07T18:21:01+0900

https://www.lefoogroup.com/products/water-pressure-sensor/

Digital Drinking Water pressure sensors are frequently used for inlet and outlet water pipe pressure measurement in clean water systems at public utilities.

Small Size Water Pressure Sensor LFT221
LEFOO WATER PRESSURE SENSOR AND WATER PIPE PRESSURE MEASUREMENT
Water pipe pressure sensors are frequently used for inlet and outlet water pipe pressure measurement in clean water systems at public utilities. Some water systems are fed by the gravity flow of the water, usually, lift stations pump the water to a higher elevation to provide reliable gravity flow. Water pressure in the pump well, water tower needs to be monitored by a water differential pressure sensor to control the predetermined water flow rate at the pump input, which turns off the pump at a minimum flow rate to prevent empty run damage. Also, pump well and water tower that undergoes a large release of water require water supplement. Pressure sensors for water pumps offer reliable pressure measurement for the pump and the observer can determine when to adjust additional pressure and flow by the measured values.

A drinking water pressure sensor is generally placed in a position such as:

The water input side of the drinking water pressure sensor

Pump output side

Clean end location (pump wet well, elevated pipe...)

HOW TO SELECT A DRINKING WATER PRESSURE TRANSDUCER
Water pressure transducers can measure pressure in several different ways:

1. Absolute pressure VS gauge pressure vs Differential pressures
Absolute water pressure is measured against vacuum or pressure-free.

Therefore, to remove these contaminants, different chemical processes take place. The three process steps of Sewage treatment are:

Primary Treatment (temporary holds the sewage, the settled and floating particles are removed and then released for secondary treatment)

Secondary Treatment (to remove dissolved and suspended biological matter)

Tertiary Treatment (final cleansing process)

Fourth Treatment Stage: water pipe pressure sensor for sewage treatment

Digital water pressure sensor for water pumps: Sewage Treatment Steps?

The sewage treatment procedure includes the following step;

Methods to treat sewage by digital water pressure sensor:

The four common methods to treat sewage are:

Physical Water Treatment

Biological Water Treatment

Chemical treatment

Sludge Treatment

A water pipe pressure sensor is an electronic device. We also use it to detect, regulate, and monitor pressure. In addition, it converts pressure into an analog electrical signal.

Moreover, the pressure sensor converts the perceived data into an electronic signal.

TECHNOLOGIES USED BY WATER PRESSURE SENSOR FOR WATER PUMPS SEWAGE TREATMENT.
There are 6 major technologies used by pressure sensors for sewage treatment:

Potentiometric pressure sensors

Inductive pressure sensors

Capacitive pressure sensors

Piezoelectric pressure sensors

Strain gauge pressure sensors

Variable Reluctance pressure sensors

Water Pipe Pressure sensors are of four types;

Aneroid Barometer Sensors

Manometer Sensors

Bourdon Tube Pressure Sensors

Vacuum Pressure Sensors

WATER PIPE PRESSURE SENSOR TECHNOLOGIES USED TO NEUTRALIZE WATER?

The modern manufacturing process relies partially on water. On the elementary level, water is essential to turn raw materials into basic manufacturing resources. Furthermore, water is also required to clean, combine and transform them into daily life products.

During the process, water becomes wastewater due to its exposure to contaminants so it has to go through other rigorous treatments before you release it into natural reservoirs.

Moreover, most of the Industrial factories are now doing on-site treatment of wastewater to cut the costs, and to recycle it back to the manufacturing process.

Moreover, the wastewater cleaning process is based on multiple steps. This process cleanses water from harmful bacteria, chemicals, organic and inorganic compounds of water.

Following are the technologies used to neutralize water and to remove impurities from water;

Reverse Osmosis System

Ultrafiltration System

Vacuum Evaporators

Vacuum Filters

Paper bed Filters

Solid Bowl Centrifuges

Tramp Oil Separators

Types of Instruments Used for Sewage Treatment:

To treat waste water the Industrial manufacturers used the 4 types of basic instruments;

Level Instruments

Flow Instruments

Water Quality Monitoring Instruments

Pressure Instruments

Level Instruments:
We use level instruments to maintain liquid and gas levels in pipes, tanks or silos in wastewater treatment systems.

Usually, treatment pipes are difficult to access because they are opaque so the system operators depend on level radar, sensors, and transducers to monitor the level of water.

In addition, switches are normally connected with the alarms, pumps, or controllers to adjust the incoming flow of water and gas.

Flow Instrument:
Flow instruments are used for two main purposes:

To determine the amount of gas or liquid present in the pipe.

To check the rate at which the gas or liquid is moving through the vessel.

The flow instruments are installed inside the treatment pipes. They measure the volume and mass of gas or liquid at consistent time intervals.

The flowing instrument might be;

Variable area meter

Mechanical flowmeters

Magnetic flowmeters

Thermal flowmeters

And, pressure-based meters.

Pressure Instruments:
Pressure Instruments include;

Transmitters

Sensors

Transducers

Gauges

It is possible to install pressure instruments on the inside of the waste treatment pipes, pumps, and reservoirs.

In addition, these pressure instruments help industries to maintain safe pressure levels and also prevent equipment failure.

To measure the treatment process, you need to install the water quality instruments inline. The type of meter required per phase depends on the testing environment.

The system in question is also a matter of concern in this regard.

LEFOO STEPPER MOTOR PERISTALTIC PUMP(2023年04月07日)

lefoogroup — 2023-04-07T18:20:26+0900

https://www.lefoogroup.com/products/stepper-motor-peristaltic-pump/

Peristaltic pumps are very popular fluid transfer equipment with a wide range of applications. Peristaltic pumps can be classified according to the motor type into stepper motor peristaltic pump, DC motor peristaltic pump, servo motor peristaltic pump, explosion-proof motor peristaltic pump, etc.

Stepper Motor Peristaltic Pump LFP101/ST
Stepper Motor Peristaltic Pump LFP302/ST
Stepper Motor Peristaltic Pump LFP401/ST

Let's LEFOO peristaltic pumps manufacturers take you to have a look:

There are also many types of stepper motor peristaltic pumps developed by LEFOO pressure control, which are often used in experimental fields.

Now the peristaltic pump price is affordable, if you have needs, please contact us.

LEFOO PRESSURE TRANSMITTER(2023年04月07日)

lefoogroup — 2023-04-07T18:19:56+0900

https://www.lefoogroup.com/products/pressure-transmitter/

A pressure Transmitter (differential pressure transducer) converts the physical quantity 'force per area' into an industry-standard signal that machines can read. Pressure transmitter manufacturer LEFOO offers pressure sensors and pressure transducers at precise exactness of 0.1%FS,0.25%FS,0.5%FS,1%FS

General Type Pressure Transmitter
Pressure Type:

Gauge/ Absolute Pressure

Pressure Range: -100kPa~60MPa

Output: 4~20ma/ 0.5~4.5V/ 0~10V;

Pressure Accuracy: 0.25%F.S. / 0.5% F.S.;

Water Pressure Sensor
Pressure Transducer Sensor Type:

Water Pressure

Pressure Range: 0~1MPa

Output: 0.5~4.5V

Pressure Accuracy: ±2.0%F.S.

Refrigeration Pressure Sensor
Refrigeration Pressure Transducer

Pressure Type: Gauge

Working temperature: -40~120°C

Protection Level: IP67

Pressure Accuracy: 0.8% F.S.

High Temperature Pressure Sensor

Pressure Type: Gauge / Absolute

Pressure Range: -100KPa~60MPa

Media temperature: -20-180 °C; / 180~320 °C

Measure Media: High Temperature liquid / Vapor

High Accuracy Pressure Sensor
Industrial Pressure Transducers

Pressure Type: Gauge / Absolute

Pressure Range: 0~7MPa / 0~4MPa

Pressure Accuracy: 0.25%FSO / 0.1% FSO

Output: 4~20ma/ 0~5V/ 0~10V RS485

Flat Film Pressure Sensor
Diaphragm Pressure Transmitter;

Pressure Range: 0-20KPa-35 MPa

Diffusion silicon core + 316L thin diaphragm

Pressure Accuracy： 0.25%FSO / 0.5% FSO

Electrical Connection: Parkard / Big Hessman / M12

Temperature And Pressure 2 in 1 Sensor
Temperature and Pressure Transducer

Pressure Type: Gauge / Absolute

Pressure Range: 0~70MPa

Media temperature: -20~85 °C

Dual Measure: Temperature + Pressure

Submersible Liquid Level Sensor
Submersible level sensor

Working temperature: -20~85°C

Protection Level: IP68

Measure Precisement: 0.5% F.S

Measurement Range: 0-200m(0-656 feets)

Explosion-proof Pressure Transmitter
Pressure Transmitters

LCD digital pressure reading

Pressure Range: -100kpa~60Mpa

Anti-interference,Explosion-proof

Pressure Precisement: 0.25% / 0.5% FSO

Pressure Transmitter With Display
Pressure Transmitters

Glass microcapsule sensor

Pressure Range: 0~35Mpa

Anti-interference,vibration resistant

Pressure Precisement: 0.5% FSO / 1% FSO

Differential Pressure Sensor
A differential pressure sensor or differential pressure transmitter is a device for monitoring pressure changes at two position

Monocrystalline Silicon Pressure Transmitter

Pressure Type: Gauge / Absolute

Pressure Range: -100~60MPa / 0~3MPa

Pressure Accuracy: 0.075%FSO / 0.05%FSO

Output: DC4~20mA HART(two-wire system)

Digital Pressure Gauge

LEFOO PRESSURE TRANSMITTER SUPPLIER ADVANTAGES
A Pressure Transmitter is a device that produces an output electrical signal (ma or microvolt) that varies with the pressure it experiences. When pressure is forced on the crystal chip inside the sensor and the deformed crystal generates a signal. The signal will be transferred by the wire to a display or monitor that can show the signal in value. For example: 4ma=0, 12ma =50 psi, 20ma=100 psi... Pressure sensors are used to inspect the pressure of the gas, fluid, or another medium.

As the pressure transmitter manufacturers , LEFOO pressure control designs multiple types of pressure sensor transducers at lower costs and good prices. The pressure sensor transducer includes water level differential pressure sensor, absolute vacuum pressure sensor, smart room temperature pressure sensor, industrial digital hydraulic pressure sensor, piezoresistive pressure sensor, pneumatic pressure sensor with display, OEM pressure sensor, etc.

LEFOO PRESSURE TRANSDUCER MANUFACTURER ADVANTAGES
A pressure sensor transducer is a device that consists of a pressure sensor and a signal amplifier, a pressure transducer will translate measured data into a stronger electrical analog signal that can be read and shown on a display by the program controller. A Pressure transmitter is a device that converts a low-class electrical signal from a sensor or transducer to a higher class or a form of data that is available for long distances transmission. Such as 4-20 mA or 485 digital output. These outputs can transmit over long distances. Some transmitters can provide additional data about the device or process measured as part of the communication. The(1-5,1-10)voltage signal is the most stable signal in electrical noisy situations like energy-related industries.

THE DEFINITIONS OF ABSOLUTE PRESSURE, GAUGE PRESSURE, AND DIFFERENTIAL PRESSURE

Pressure Sensor

Pressure is the force that exists on the surface per unit area. There are three types of pressure measurements: absolute pressure, gauge pressure, and differential pressure. Absolute pressure is referred to the vacuum space (zero atmosphere pressure). In practice, absolute piezoresistive pressure sensors measure the pressure relative to a high vacuum reference sealed behind its sensing diaphragm. Absolute pressure is the sum of gauge pressure(Pg) and atmospheric pressure(Paytm). The acronym for (Kpa: Thousand Pascal) Bar or PSIA (Pounds per Square Inch Absolute. ) Absolute pressure sensor and altimeter are good options for weather monitoring. Usually the standard atmosphere pressure=101.325 pascal=14.7 psi=1.01 bar.

Gauge pressure is actual pressure in a vacuum environment. it is an acronym for PAG (Pascals Gauge) or PSIG (Pounds per Square Inch Gauge) Gauge pressure is measured relative to the environmental atmosphere pressure. Weather conditions and altitude changes directly influence the gauge. Gauge pressure is positive for pressures above atmospheric pressure, and negative for pressures below it. The average atmospheric pressure at sea level is 101.325 kpa.Gauge Pressure =Absolute Pressure-Atmosphere Pressure. Kpa, Bar, PSI are used to describe Gauge pressure value. For a commonly example, in our daily lives, we may pump our car tires from 32 to 40 PSI by the gauge pressure.

Differential pressure is similar to gauge pressure, It is measured based on atmospheric pressure, Differential pressure is composed of high pressure and low pressure, and is usually used to monitoring filters in pipes or tanks when it clogged. Differential pressure is usually an acronym for PAD (Pascals Differential) or PSID (Pounds per Square Inch Differential, Kpa, and Bar). Differential pressure is also used in boiler, high pressure or liquid pressure or level check, and low pressure for an air pressure check. The two pressures will indicate how many liquids are left in the boiler.

The units of pressure are Pascal (Pa, N / m2), pounds / square inch (PSI), atmospheric pressure (atm), and bar. (Bar), an inch of mercury (inch Hg), millimeter of mercury (mm Hg, torr), etc. The PSI and Bar are most commonly used in sensor industries. Liquid Pressure is defined as the strength of a liquid per unit area of its surroundings. For example, pressure (P) is a function of force (F) and area (A). P = F / A, (fluid P gauge=pgh)

LEFOO PERISTALTIC PUMP(2023年04月07日)

lefoogroup — 2023-04-07T18:19:03+0900

https://www.lefoogroup.com/products/peristaltic-pump/

Peristaltic pumps cheap are a type of dosing pump that uses the principle of peristalsis as the basis for their design. Optimal for the precise transfer control for liquid, solution, paste.

DC Motor Peristaltic Pump
LEFOO Peristaltic pumps, Optional Brushless/Stepper Motor. High temperature/Chemical resistance chemical dosing pump. Chemical dispenser. Optional various soft tubes. Precise flow control

Stepper Motor Peristaltic Pump
Peristaltic pumps are very popular fluid transfer equipment with a wide range of applications. Peristaltic pumps can be classified according to the motor type into stepper motor peristaltic liquid pump, DC motor peristaltic pump, servo motor peristaltic pump, explosion-proof motor peristaltic pump, etc.

BRIEF INTRODUCTION OF LEFOO PERISTALTIC PUMP
Peristaltic metering lab pumps are a type of liquid transfer pump used for pumping a variety of fluids such as oil, detergent, beverage, sauce chemical solution. Hence these pumps are also called the chemical dosing pump

As peristaltic pumps manufacturers, LEFOO pressure control possesses scalable technology applied in peristaltic dosing hose pump to meet different process needs. Using our cheap peristaltic pump, the hose is the only part that needs to be replaced. Like our stepper motor peristaltic pump which is not only inexpensive but also quickly replaceable on site.

The peristaltic metering pump is also known as a peristaltic hose pump or soft pipe pump, LEFOO peristaltic metering pumps are powered by a 24V DC motor or stepper motor, durable hose, robust structure, accurate flow control at a reasonable price. The peristaltic dosing hose pump is easy to install, simple to operate at low maintenance cost.

LEFOO FLAT FILM PRESSURE SENSOR(2023年04月07日)

lefoogroup — 2023-04-07T18:18:27+0900

https://www.lefoogroup.com/products/flat-film-pressure-sensor/

Diaphragm Pressure Transmitter
Pressure Type: Guage/ Absolute
Diffusion silicon core + 316L thin diaphragm
Pressure Accuracy： 0.25%FSO / 0.5% FSO
Electrical Connection: Parkard / Big Hessman / M12

General Type Flat Film Pressure Sensor LFT2700
Clamp Type Sanitary Flat Film Pressure Sensor LFT2020
Excellent silicon wafer, Wheatstone-bridge and pressure-sensitive diaphragm are sealed in a steel house filled with glycerine or silicone to encase the interior components of the sensor. diaphragm sensors are very sensitive to rapid pressure changes. -- they are commonly used in very corrosive environments or with extreme over-pressure situations.

LEFOO SENSOR SELECTION CRITERIA, A GOOD FLAT PRESSURE SENSOR SHOULD HAVE THE PROS UNDER BELOW
1. Fine sealing, available in the viscous medium and easy to clean up the residual stains.

2.High measurement accuracy, good stability,

3. small size and convenient installation.

4. high-cost performance.

In Lefoo differential pressure transmitter manufacturer, pressure sensor are able to give accurate and precise readings for controller to control electronic instrument to prevent overflow or avoid empty run damage, which are good for energy effectively and achieve long-term operating, However, some factors influence the suitability of flat pressure sensor: the characteristics of the measured media, environmental conditions, pressure range, and the level of precision in measurements made.

LEFOO FLAT PRESSURE SENSOR CHARACTERISTICS OF THE MEASURED MEDIA
Accoring to lefoo, The flat pressure sensor(elastic element) will be exposed to the medias used in the measuring process, therefore corrosion resistant metal diaphragms or foil are optimal for very harsh environments. The materials which might react with the process substances or degrade in corrosive media are unsuitable for use in the flat pressure sensors.

ENVIRONMENT CONDITIONS FOR LEFOO FLAT PRESSURE SENSOR
Corrosive environments, vibrations near pipe fittings, or extreme high temperatures are vital for the selecting of pressure sensors for the purpose of protect the pipes and facilities in very harsh environments.

PRESSURE RANGE OF LEFOO FLAT PRESSURE SENSOR
Flat pressure sensor or flat pressure transducers are designed with a limit of certain pressure ranges for different equipment and facilities. Because Large and complex equipment requires multiple sensors with high accuracy, but small civilian equipment may only need one sensor with ordinary accuracy, to choose the right pressure transducer is very important in the process.

SENSITIVITY OF LEFOO FLAT PRESSURE SENSOR
The more precise the pressure transducer, the more expensive it is, thus choosing pressure transducers that available to reach the wanted precision at the most suitable price is quite worthy. The compromise between accuracy and measuring time is also quite important, is unadvisable to use flat pressure sensors that take a lot of time to give accurate pressure readings, High accuracy measure reading at short measuring time is viable when the price is very high.

OLD SCHOOL PRESSURE MEASURING METHODS
Old school pressure measuring methods have been developed and utilized in decades ago and some of them are still applied in some uncomplicated, small sized and low precision equipment.

1.Height of Liquid in Column
The height of a liquid with known density is used to measure pressure. Using the equation P = ρgh, the gauge pressure can be easily calculated. These types of pressure measuring devices are usually called manometers. Mercury is used when you desire higher pressure measurements and not as great sensitivity.

2.Elastic Distortion
This pressure measuring method is based on the idea that deformation of an elastic material is directly proportional to the pressure being measured. Such as Bourdon-tubes or Bourdon Gauge.

3.Bellow gauge
Bellows elements are cylindrical in shape and contain many folds. They deform in the axial direction (compression or expansion) with changes in pressure. Bellows can only be applied to low pressures with low accuracy

4.Mechanical Strain type
Electrical methods used for measuring pressure utilize the idea that dimensional changes in a wire affect the electrical resistance to the conductor. These devices that use the change in resistance of the wire are called strain gauges.

TYPES OF PRESSURE FOR LEFOO FLAT PRESSURE SENSOR
Pressure is defined as force per unit area and is in calculate units of psi, Pa, Kpa, and Bar. Three type of reference pressures are used in pressure measuring industries.

Absolute pressure -Pressure measured in vacuum zero pressure environment, atomospheric pressure plus gauge pressure.

Gauge Pressure - Pressure measured in ambient atmosphere. absolute pressure minus atmospheric pressure.

Differential Pressure - pressure measurement based on same medias or in same facility in two positions.

APPLICATION OF LEFOO FLAT PRESSURE SENSOR
Flat pressure sensors are widely used in a variety of industries such as petrochemical, water purify ink, paint, mud and Dairy products with a certain possibility of viscous measurement.

LEFOO AIR COMPRESSOR CUT OFF SWITCH(2023年04月07日)

lefoogroup — 2023-04-07T18:17:48+0900

https://www.lefoogroup.com/products/air-compressor-pressure-switch/

Air Compressor Cut Off Switch
Pressure Range: 15~60psi / 40~250psi / 400~500 psi
Stable and accurate pressure switching
Rare metal parts, durable quality
Optimal for heavy duty commercial air compressors
Robust structure for industrial harsh conditions

Air Compressor Pressure Switch LF10
Air Compressor Pressure Switch Valve LF10L
LEFOO Air Compressor Pressure Switch LF17
There are numerous types of lefoo pressure switch for air compressor cut off switch that come on the market. In pressure switch manufacturer, Picking the right air compressor pressure switches depending on what the air compressing system is. A new pressure switch is usually more precise than repairing an old one, while adjustable digital pressure switches give you more convenience when using them.

Intelligent air compressor pressure switches made by LEFOO pressure control are instruments of pressure measurement, display, and control. The air compressor cut-in and air compressor cut off switch can automatically control the relay output according to the pressure in the tubing. Compared with the mechanical switch, it has the characteristics of simple operation, clear display, anti-vibration, and high control accuracy.

When the compressor is plugged into the air compressor system, the motor starts and the air compressor begins to pressurize. When the specified system pressure is reached, a relay will control the electrical contacts apart, breaking the circuit and stopping the motor. As air is used and tank pressure drops to a specified ‘cut-in’ setting (approximately 30 PSI below the ‘cut-off’ setting) the relay contacts close and the motor starts again. The cycle continues as long as the air compressor cut off switch is in use.

As one of peristaltic pump manufacturers, we will do our best to meet all the needs of customers.

Lefoo 115VAC RO Diaphragm Booster Pump(2023年04月07日)

lefoogroup — 2023-04-07T18:17:04+0900

https://www.lefoogroup.com/products/115vac-ro-diaphragm-booster-pump/

Low vibration and low noise, self-priming and stable pressure feeding, LEFOO 115VAC RO Diaphragm booster pump are ideal for indoor RO system applications and DIY water booster systems. The diaphragm booster pump can be used as long as it is plugged into the municipal power supply. With the pre-treatment filters and RO membrane, the pump can produce pure water that barely has any pollutants and odor that make the water a fresh taste. The RO treatment industry is pollutant-free and has a lower cost when compared to the bottled water industry.

The RO pump manufacturer LEFOO will be the one-stop solution for your business.

LEFOO PRODUCT FEATURES
Electrical Machinery
Model: 115VAC50/60HZ, which is a fully enclosed permanent magnet DC motor with natural cooling mode;

Power Line: It is able to be matched 1 meter or random lengths for the three-core power cord 18AWG with length 350mm.

Working System: According to different working conditions, S1 work continuously but S3 work intermittently.

Configuration: When the shell temperature rises to 64℃, the motor will stop working until the shell temperature drops to 35℃because of the overtemperature protection system in it.

Bottom: Pls see the second diagram and the motor can be selected with or without the base.

Pump: Pls, see the third diagram. A Three-chamber diaphragm pump with a self-priming function and the head can choose different joints according to different plug requirements.

Typical Application: It is used for conveying or pressurizing drinking water or other liquids.

Key Material
Pump: PA66（polyamide-66）

Picture: EPDM

Diaphragm: Santoprene (SP)

Faster: Stainless steel (SS)

Working Environmental Temperature: 5℃~40℃

Water Temperature: 5℃-38℃

Authentication Certificate: ROSH, CE, CQC, UL, NSF

Temperature rise curve: It is shown in figure 4 that the temperature rise curves of inlet 30PSI, outlet 70psi and 100psi at the corresponding ambient temperature of 31℃.

Flow and Current curve: Pls check the fifth chart and the characteristic curve is 30PSI for the water inlet.

Life: > 2000 hours (inlet 30PSI, outlet 70psi)

Noise: ≤35dB (A) (inlet 30PSI, outlet 70psi)

We can also offer kinds of peristaltic pump for sale, if you are interested, please contact us.

Low Pressure Switches and High Pressure Switches in HVAC Systems(2023年03月17日)

lefoogroup — 2023-03-10T14:44:23+0900

https://sco.lt/7BULR2
Low pressure switch HVAC systems and high pressure pressure switches are the two basic refrigeration switches in a typical high-grade residential system. It is called high grade because not every refrigeration system of air conditioners and heat pumps has a switch to protect the refrigeration system. Today's focus is on what is a HVAC pressure switch used in a refrigeration circuit and how an HVAC pressure switch protects the system from further damage.

Ⅰ. HVAC PRESSURE SWITCH: INTRODUCTION TO HIGH PRESSURE PRESSURE SWITCH REFRIGERATION

In Lefoo pressure switch manufacturer, The high pressure switch will stop the compressor circuit if the pressure exceeds the HVAC pressure switch rating. Ratings will vary depending on the type of refrigerant the air conditioner or heat pump uses with the system.

On some air conditioners or heat pumps, this switch is just reset manually. Because if it trips, there's definitely a problem that needs to be fixed before the system is back up and running.

On Rheem and Ruud heat pumps and air conditioners, the reset button is usually located in red near the control panel. Simply press the switch to reset the switch and the air conditioner should return to normal operation until the pressure exceeds the switch rating.

Things that can cause a high voltage switch to trip include:

1. The condenser fan motor is damaged.

2. The condenser coil is clogged with dirt and debris.

3. The fins on the coil are bent.

4. The refrigeration system is blocked.

If these problems exist, they should be dealt with before resetting the switch. A high pressure switch prevents the system from operating at extremely high pressures. Continuously resetting the switch without considering the problem will lead to a potentially catastrophic failure of the system, resulting in higher repair costs.

Ⅱ. HVAC PRESSURE SWITCH: INTRODUCTION TO LOW PRESSURE PRESSURE SWITCH REFRIGERATION

The low pressure switch hvac is usually an automatic reset switch that automatically resets when the pressure on the low pressure side of the refrigeration system returns to normal or above the switch setting.

When a refrigeration system is operating below normal pressure, the system can freeze at the evaporator coil at the beginning of the coolant and return to the compressor through the suction line. Freezing of the refrigeration system is bad and leads to clogging of the liquid refrigerant in the compressor, which can lead to compressor failure.

Things that can cause a low voltage switch to trip include:

1. Refrigerant leakage leads to low refrigerant charge.

2. The blower motor in the air handler is faulty.

3. Blocked evaporator coil or blocked airflow.

4. The refrigeration components in the refrigeration system fail.

Application of Differential Pressure Sensor in HVAC System(2023年03月17日)

lefoogroup — 2023-03-10T14:43:57+0900

https://sco.lt/7gQcc4

As building maintenance needs continue to increase, HVAC systems are no longer adequate for stand-alone use. Whether it is a commercial, retail or industrial building, differential pressure sensors play an important role in monitoring the safety and comfort of the building. When combined with pressure technology, HVAC systems can operate at optimal levels and also improve building maintenance. There are three ways to realize it.

1. THE MAINTENANCE OF THE DIFFERENTIAL PRESSURE SENSOR HVAC DETECTION AREA

Quality control of the building is fundamental. HVAC differential pressure sensor can closely monitor pressure changes and point out whether there is a dilemma. Pressure drops in the room or through the filter can alert service technicians for maintenance.

Differential pressure sensors monitoring differential pressure in HVAC systems are especially important for critical applications such as the detection of stairwell pressurization, clogged filters or clean rooms.

Differential pressure sensors for HVAC, such as hydraulic pressure switch and compressor pressure switch can be used in: compressors, chillers, boilers, heat recovery systems, burner controls, VAV.

2. IMPROVE INDOOR AIR QUALITY WITH DIFFERENTIAL PRESSURE SENSORS HVAC

The lefoo pressure switch improves the efficiency of the air conditioning system by measuring air flow and pressure, which is an effective air distribution system. However, buildings require a certain amount of air flow depending on the function of the building and the average number of occupants.

For example, a shopping center with a lot of traffic and people emitting CO2, differential pressure sensor for HVAC can ensure that a large amount of airflow is pumped back into the building so that people can breathe easily. HVAC pressure sensors are especially beneficial for cleanrooms by assessing and monitoring air pressure, quality and ventilation. All important considerations are needed in cleanroom environments.

HVAC pressure sensors can be used for: VAV (variable air volume) control, static air duct pressure, air handling systems.

3. OPTIMIZE SYSTEMS WITH DIFFERENTIAL PRESSURE SENSORS FOR HVAC
By measuring the pressure and airflow in individual rooms, owners can optimize heating, cooling and air flow. By improving the efficiency of HVAC systems, sensors can reduce building energy consumption and costs.

Maintenance of the detection area can also reduce energy costs and prevent unnecessary energy loads from faulty equipment. HVAC pressure sensors can also ensure compliance with legally required standards.

LEFOO contributes to developing and manufacturing reliable and high-quality standard pressure control and temperature control equipment, offering innovative solutions and components. All inquiries are welcome.

Application and Common Problems of RO Booster Pump in the System (Water Purifier)(2023年03月16日)

lefoogroup — 2023-03-10T14:43:26+0900

https://sco.lt/8dBaXQ
The main components of RO water purifier pump are generally: front PP cotton, front water inlet solenoid valve, low pressure switch, front activated carbon, middle PP cotton, ro motor pump for water purifier, RO reverse osmosis membrane, wastewater ratio, backwash electromagnetic Valves, high-pressure switches, pressure barrels, rear activated carbon, gooseneck faucet, etc.

Ⅰ. CLASSIFICATION OF RO BOOSTER PUMPS (BY PERFORMANCE)
At present, there are probably: ordinary (second generation) booster pumps, stabilized booster pumps, and self-priming booster pumps. (Note: Mini pumps and RV pumps are not RO water pumps, they are only used for water supply machines).

Ordinary (second generation) RO water booster pump-RO water booster pump without other auxiliary functions;

Water cut-off booster pump-Compared with ordinary RO booster pumps, there is an additional mechanism that can automatically open or close the water source.

RECOMMENDED BOOSTER PUMP FOR RO SYSTEM
100 gpd pump-ro booster pump 100 GPD include RO Booster Pump 100 GPD and Self-priming RO Booster Pump 100 GPD

150 gbd pump-150 gpd ro booster pump include RO Booster Pump 150 GPD and Self-priming RO Booster Pump 150 GPD

300 gpd pump-300 gbd reverse osmosis booster pumps include RO Booster Pump 300 GPD and Self-priming RO Booster Pump 300 GPD

Ⅱ. THE INSTALLATION POSITION OF THE RO BOOSTER PUMP IN THE SYSTEM

1. Install after the pre-filter assembly.

2. Install after the first filter.

Ⅲ. COMMON FAULTS IN THE USE OF RO BOOSTER PUMPS

1. The pump head of the RO booster pumps is leaking;

2. There is abnormal noise;

3. The boost pressure (working flow) is low;

4. Large working current.

Ⅳ. REASONS FOR COMMON FAILURES OF RO BOOSTER PUMPS DURING USE

2. The RO water booster pump has abnormal noise:

(1) The use of the RO water pump is too long or the working pressure is too large, causing the rotating parts to loosen and generate noise;

(2) Unstable inlet pressure leads to uneven working load of the RO pressure pump and noise;

(3) When the user is installing, the fixing screws of the base are not tightened and noise is generated.

3. Low boost pressure (working flow)

(1) The inlet water pressure is too low;

(2) Air enters the booster chamber of the RO water pump;

(3) The ratio of wastewater is unreasonable.

4. The booster pump for water purifier system has a large working current

(1) Mostly the working load (pressure) of the water purifier booster pump is too large;

(2) The motor rotor is stuck. (This phenomenon is generally caused by the excessive inlet pressure of the water purifier booster pump, the waste water ratio or the blockage of the RO membrane.).

The Function and Application of Booster Pump for Water Purifier(2023年03月16日)

lefoogroup — 2023-03-10T14:42:42+0900

https://sco.lt/6yMOfY

A water pump is a machine that transports or pressurizes a liquid. It transmits the mechanical energy of the prime mover or other external energy to the liquid to increase the liquid energy, and is mainly used to transport liquids including water, oil, acid-base liquid, emulsion, suspoemulsion and liquid metal.

1. INTRODUCTION OF LEFOO BOOSTER PUMP FOR WATER PURIFIER

As the name implies, ro motor pump is a pump used for pressurization. Its main uses are water heater pressurization, low water pressure in high buildings, sauna, bathing and other pressurization, pressurization of insufficient water pressure on the uppermost floor of the apartment, solar automatic pressurization, reverse osmosis purification. Water booster, etc.

Diaphragm pump: Diaphragm pump, also known as control pump, is the main type of actuator, which receives the control signal output by the control unit. Diaphragm pumps are powered by power to change the flow of fluid. The diaphragm pump is a metering pump, which can control the water output, boost the pump, and increase the water pressure.

Remarks: Diaphragm pumps and external booster pump for water purifier are two completely different types of pumps.

The booster pump for household water purifiers is a diaphragm booster pump. The principle is to use a diaphragm to boost pressure, which is a diaphragm pump.

2. THE ROLE OF THE BOOSTER PUMP FOR WATER PURIFIER IN THE WATER PURIFIER:

Provide the water inlet pressure to the R0 membrane, so that the source water can pass through the R0 membrane normally, so as to obtain pure water. The booster pump of the pure water machine is to compensate for the lack of tap water pressure. Generally, the pressure of tap water is about 2 kg, while the working pressure of the reverse osmosis membrane needs to be more than 6 kg; and the pump is the source of this additional 4 kg pressure.

3. WHAT IS THE DIFFERENCE BETWEEN A BOOSTER PUMP FOR WATER PURIFIER AND A SELF-PRIMING PUMP?

The booster pump can be used normally when the water pressure is above 1 kg. When using the booster pump, try to use the water pressure above 1.5 kg.

Self-priming pumps do not have any requirements for water pressure. The disadvantage is that the noise is too large. It is mainly used in environments where there is no water pressure or the tap water pressure is less than 1 kg.

Remarks: The quality of the pump is also distinguished and judged by the self-priming pump, not the water purifier booster pump.

4. HOW TO JUDGE WHETHER TO USE A BOOSTER PUMP FOR WATER PURIFIER OR A SELF-PRIMING PUMP?

When the source water has no pressure, use a self-priming pump (such as well water, water in a water tank, river water, bottled water, wine, and stationary water sources). When the source water has a certain pressure, use a water purifier to increase. Compression pump (generally, a booster pump can be used, such as tap water, water tower water above the second floor).

LEFOO develops and manufactures reliable, high quality standard pressure control, temperature control equipment, providing innovative solutions and components. Welcome to consult.

The Classifications and Working Principles of RO Booster Pump(2023年03月15日)

lefoogroup — 2023-03-10T14:42:13+0900

https://sco.lt/8c3C1A

RO pump is also known as RO booster pump, RO diaphragm pump, reverse osmosis booster pump, and is a type of DC diaphragm booster pump. It is currently one of the core parts of the water purification industry and household water purifiers.

Ⅰ. DEFINITION OF LEFOO RO BOOSTER PUMP

RO booster pump is the booster pump used in reverse osmosis equipment. It has the functions of self-priming and pressurization and is one of the key and important components of the RO water purifier. The RO booster pump is another important component of the RO membrane in the RO water purifier, which provides the water pressure and water flow required for its work, so as to achieve the purpose of the ro water purifier pump to produce pure water.

Ⅱ. CLASSIFICATION OF RO BOOSTER PUMPS

2. Classified according to the environment of use, it can be divided into ordinary RO booster pumps and 0-pressure RO booster pumps for municipal water pressure zones. The 0-pressure RO booster pump is mainly used in rural areas and other areas with no water pressure and low water pressure. It is also called a 0-pressure pump (or self-priming pump).

Ⅲ. WORKING PRINCIPLES OF RO FILTER PUMP

Some Questions About Booster Pump for Water Purifier(2023年03月15日)

lefoogroup — 2023-03-10T14:41:37+0900

https://sco.lt/7FOKTQ

Ⅰ. Can the water purifier of the booster pump for water purifier be replaced with a self-priming pump?

It can be replaced. If the source water pressure is above 1 kg, the booster pump can be directly replaced with a self-priming pump; if the source water pressure is below 1 kg (well water), the self-priming pump should be placed in the first stage To the front of the filter element of the water heater, add a self-suction head to the front of the water inlet of the pump, and connect the two lines of the low pressure switch.

Ⅱ. What is the reason for the "gasping sound" inside the booster pump for water purifier?

There is air flow in the water pump, which is usually caused by low water pressure environment or blockage of the front filter element. Remove the water pump and test it separately to determine whether there is a problem with the water pump. If there is no fault, wait for the air in the pure water machine to be drained. Then you can.

Ⅲ. There is a noise in the booster pump for water purifier, which is similar to the sound of stone stirring. What is the reason?

It may be that the water quality of the water source is poor, or the particulate carbon of the pre-filter has entered the inside of the pump. In this case, before installing the filter, clean the filter first, connect the water inlet and outlet of the pump in reverse, and connect the pump to the pump. The impurities inside can be flushed out.

Ⅳ. Can the booster pump of the booster pump for water purifier?

The water pump is connected to tap water, no matter whether it is powered on or not, there will be water flowing out, because the booster pump for water purifier is not responsible for controlling the opening and closing of the water circuit.

Ⅴ. Will the booster pump for water purifier be connected to the tap water in reverse?

There is no water flow out of the reverse flow.

Ⅵ. The method of judging the fault of the booster pump for water purifier:

1. When the water pressure is normal, turn on the water source and power supply, start the water pump, and touch the water pump with your hand. If you feel the vibration of the booster pump, the pump is running normally.

2. When the pump is running, touch the booster pump for water purifier with a screwdriver, and the ear is close to the other end of the screwdriver. If the pump makes a strong and regular sound, the pump is working normally. The pump loses pressure.

Ⅶ. The booster pump for water purifier performance judgment criteria:

1. Appearance: It is required that the electrophoretic paint does not fall off, the shell and fasteners have no obvious rust, the pump head has no obvious injection defects, and the rubber feet are not damaged; the connection parts are not loose; the pump body is stable when laying flat; the nameplate is printed clearly and without warping , bubbles, etc.

2. Stall pressure: ≤145psi (1Mpa=10kg). (1psi=0.006895MPa).

3. Locked rotor pressure: the water outlet is completely closed, and the pressure at the water outlet port.

4. Noise: Noise ≤ 50dB (A).

5. The strength of the lead-out end: the lead-out end bears a tensile force of 40N along the axis direction for 10±1s, and the lead-out end should not be loose.

6. Self-priming height (self-priming pump): Self-priming height ≥ 2.0m.

7. Electric strength: The power port and the shell can withstand 500V/50Hz/lmin without flashover and breakdown.

8. Pressure resistance: In working and non-working states, it can withstand 1.2APa static water pressure for 15 minutes without deformation or damage, and there is no leakage of water in each connection part.

LEFOO Soda Pump Dispenser(2023年03月14日)

lefoogroup — 2023-03-10T14:41:11+0900

https://sco.lt/84U7t2

A soda pump dispenser can get you cold soda water, and RO pumps are optimal for liquid transfer such as soda waters.

LEFOO WATER PRESSURE SENSOR(2023年03月14日)

lefoogroup — 2023-03-10T14:40:46+0900

https://sco.lt/75oMpk
Digital Drinking Water pressure sensors are frequently used for inlet and outlet water pipe pressure measurement in clean water systems at public utilities.

LEFOO WATER PRESSURE SENSOR AND WATER PIPE PRESSURE MEASUREMENT
Water pipe pressure sensors are frequently used for inlet and outlet water pipe pressure measurement in clean water systems at public utilities. Some water systems are fed by the gravity flow of the water, usually, lift stations pump the water to a higher elevation to provide reliable gravity flow. Water pressure in the pump well, water tower needs to be monitored by a water differential pressure sensor to control the predetermined water flow rate at the pump input, which turns off the pump at a minimum flow rate to prevent empty run damage. Also, pump well and water tower that undergoes a large release of water require water supplement. Pressure sensors for water pumps offer reliable pressure measurement for the pump and the observer can determine when to adjust additional pressure and flow by the measured values.

A drinking water pressure sensor is generally placed in a position such as:

The water input side of the drinking water pressure sensor

Pump output side

Clean end location (pump wet well, elevated pipe...)

HOW TO SELECT A DRINKING WATER PRESSURE TRANSDUCER
Water pressure transducers can measure pressure in several different ways:

1. Absolute pressure VS gauge pressure vs Differential pressures
Absolute water pressure is measured against vacuum or pressure-free.

Differential pressures show the difference between inlet and outlet close to the pump, or in two water towers, or two water pipes. You can use differential pressure sensor to measure pressure drops across filters or measure flow rates by measuring the difference in pressure across a restriction.

Therefore, to remove these contaminants, different chemical processes take place. The three process steps of Sewage treatment are:

Primary Treatment (temporary holds the sewage, the settled and floating particles are removed and then released for secondary treatment)

Secondary Treatment (to remove dissolved and suspended biological matter)

Tertiary Treatment (final cleansing process)

Fourth Treatment Stage: water pipe pressure sensor for sewage treatment

Digital water pressure sensor for water pumps: Sewage Treatment Steps?

The sewage treatment procedure includes the following step;

Methods to treat sewage by digital water pressure sensor:

The four common methods to treat sewage are:

Physical Water Treatment

Biological Water Treatment

Chemical treatment

Sludge Treatment

A water pipe pressure sensor is an electronic device. We also use it to detect, regulate, and monitor pressure. In addition, it converts pressure into an analog electrical signal.

Moreover, the pressure sensor converts the perceived data into an electronic signal.

TECHNOLOGIES USED BY WATER PRESSURE SENSOR FOR WATER PUMPS SEWAGE TREATMENT.
There are 6 major technologies used by pressure sensors for sewage treatment:

Potentiometric pressure sensors

Inductive pressure sensors

Capacitive pressure sensors

Piezoelectric pressure sensors

Strain gauge pressure sensors

Variable Reluctance pressure sensors

Water Pipe Pressure sensors are of four types;

Aneroid Barometer Sensors

Manometer Sensors

Bourdon Tube Pressure Sensors

Vacuum Pressure Sensors

WATER PIPE PRESSURE SENSOR TECHNOLOGIES USED TO NEUTRALIZE WATER?

During the process, water becomes wastewater due to its exposure to contaminants so it has to go through other rigorous treatments before you release it into natural reservoirs.

Moreover, most of the Industrial factories are now doing on-site treatment of wastewater to cut the costs, and to recycle it back to the manufacturing process.

Moreover, the wastewater cleaning process is based on multiple steps. This process cleanses water from harmful bacteria, chemicals, organic and inorganic compounds of water.

Following are the technologies used to neutralize water and to remove impurities from water;

Reverse Osmosis System

Ultrafiltration System

Vacuum Evaporators

Vacuum Filters

Paper bed Filters

Solid Bowl Centrifuges

Tramp Oil Separators

Types of Instruments Used for Sewage Treatment:

To treat waste water the Industrial manufacturers used the 4 types of basic instruments;

Level Instruments

Flow Instruments

Water Quality Monitoring Instruments

Pressure Instruments

Level Instruments:
We use level instruments to maintain liquid and gas levels in pipes, tanks or silos in wastewater treatment systems.

Usually, treatment pipes are difficult to access because they are opaque so the system operators depend on level radar, sensors, and transducers to monitor the level of water.

In addition, switches are normally connected with the alarms, pumps, or controllers to adjust the incoming flow of water and gas.

Flow Instrument:
Flow instruments are used for two main purposes:

To determine the amount of gas or liquid present in the pipe.

To check the rate at which the gas or liquid is moving through the vessel.

The flow instruments are installed inside the treatment pipes. They measure the volume and mass of gas or liquid at consistent time intervals.

The flowing instrument might be;

Variable area meter

Mechanical flowmeters

Magnetic flowmeters

Thermal flowmeters

And, pressure-based meters.

Pressure Instruments:
Pressure Instruments include;

Transmitters

Sensors

Transducers

Gauges

It is possible to install pressure instruments on the inside of the waste treatment pipes, pumps, and reservoirs.

In addition, these pressure instruments help industries to maintain safe pressure levels and also prevent equipment failure.

To measure the treatment process, you need to install the water quality instruments inline. The type of meter required per phase depends on the testing environment.

The system in question is also a matter of concern in this regard.

LEFOO STEPPER MOTOR PERISTALTIC PUMP(2023年03月13日)

lefoogroup — 2023-03-10T14:40:15+0900

https://sco.lt/6jJem8
Peristaltic pumps are very popular fluid transfer equipment with a wide range of applications. Peristaltic pumps can be classified according to the motor type into stepper motor peristaltic pump, DC motor peristaltic pump, servo motor peristaltic pump, explosion-proof motor peristaltic pump, etc.

The peristaltic pump with stepper motor, as the name suggests, is a peristaltic pump driven by a stepper motor. The stepper motor has good start-stop and reverse response, wide speed range and reliability, etc., and the lifespan can reach more than 100,000 hours. The small peristaltic pump can meet the low pulse and accurate and reliable flow control required by precision instruments.

Let's LEFOO peristaltic pumps manufacturers take you to have a look:

There are also many types of stepper motor peristaltic pumps developed by LEFOO pressure control, which are often used in experimental fields.

Lefoo 115VAC Diaphragm Booster Pump 600GPD(2023年03月13日)

lefoogroup — 2023-03-10T14:39:46+0900

https://sco.lt/7MqIdc

115 VAC Diaphragm Booster Pump 600GPD is a device that delivers water in a RO water filtering system, the pump can add 75 PSI pressure to the tap water that forced raw water to pass the RO semi permeate membrane which provides a fast speed RO water production (600 gallons per day).

Specification of 115VAC Diaphragm Booster Pump 600 GPD
ModelLFP5050WLFP5075WLFP5100WLFP5150WLFP5200WLFP5300WLFP5400WLFP5500WLFP5600W
Voltage110V 60Hz AC
Inlet Pressure0.2MPa / 29 psi
Boost Pressure0.5Mpa / 73psi0.5Mpa0.7Mpa0.5Mpa0.7Mpa
Work Current≤0.17A≤0.19A≤0.3A≤0.35A≤0.45A≤0.6A≤0.63A≤0.7A≤0.8A≤0.75A≤0.85A
Work Flow≥600ml/min≥750ml/min≥980ml/min≥1500ml/min≥1900ml/min≥2700ml/min≥2950ml/min≥3250ml/min≥2800ml/min≥3600ml/min≥3200ml/min
Open Flow≥1600ml/min≥1800ml/min≥2000ml/min≥2200ml/min≥2500ml/min≥3500ml/min≥4000ml/min≥4800ml/min≥5500ml/min
Bypass Pressure0.8~1.05Mpa
Max Current≤0.24a≤0.28a≤0.4a≤0.55a≤0.65a≤0.85a≤0.97a≤1.05a
Connection3/8"NPT 3/8NPT'O' 1/4" Top Female quick connector, 1/4" Side Female quick connector, 1/4" Male quick connector.

LEFOO REFRIGERATION PRESSURE SENSOR(2023年03月12日)

lefoogroup — 2023-03-10T14:39:19+0900

https://www.folkd.com/detail/https://www.lefoogroup.com/products/refrigeration-pressure-sensor

Refrigeration Pressure Transducer
Pressure Type: Gauge
Working temperature: -40~120°C
Protection Level: IP67
Pressure Accuracy: 0.8% FSO

LEFOO REFRIGERATION PRESSURE SENSORS AND REFRIGERATION SYSTEM
Refrigeration pressure sensors are essential measurement device in controlling the refrigeration system in today's cold chain operating. Refrigeration systems often encounter with latent facility faults and inefficient temperature management. These problems can result in high energy costs and shorter machine lifespan. Compressors, air fans, and defrost operations in refrigeration systems take the highest percentage of energy use in whole Refrigeration system. Larger units employ complex control systems to optimize working times and reduce electricity costs. The electricity price per unit in many countries is proportional to the electric range, while commercial electricity and industrial electricity have a higher unit price than that of civil electricity. Here are some useful information from Lefoo pressure transmitter manufacturer

All Refrigerant equipment share the same theory of refrigeration circuit. Four steps are required to implement the refrigeration circuit step 1:Refrigerant refrigerant enters the compressor and becomes high-temperature high-pressure vapor or gas. 2.The gas enters the condenser where excess heat is rejected by imported ambient cooler air over the tubes and transformed into a high-pressure liquid with lower temperature. 3.The high-pressure refrigerant passes through a service valve which controls the amount of the flow, flow tube, and filter of drier to excess extra moisture, and a metering device where it undergoes a rapid reduction in pressure and the refrigerant starting convert back to vapor and undergoes a large drop in temperature. 4.The cold vapor arrives in the evaporator where it absorbs and chills warming ambient air which maintains the temperature in a storage room. When refrigeration circuit is applied on a Commercial large-scale cold storage, water rather than air is circle around the evaporator.

Commonly pressure transducer sensor is placed at two positions in the refrigeration system. The first is on the outlet viper line of the evaporator, which is also close to the compressor inlet. That refrigeration pressure transducer sensor, together with a temperature sensor measuring pressure and generate data for the system pressure controller, the controller classifies the fans, controls the expansion valves in many systems. The second refrigeration pressure transducer sensor is on the discharge line of the compressor. Here we introduce some principles of refrigeration.

In Lefoo, Most large refrigeration systems employ two refrigerant pressure transducer in both locations. Commercial large-scale cold storage needs a huge amount of refrigerant, and the physical size of the compressor gets bigger and electricity cost becomes significant.

Supermarket refrigeration systems with refrigeration pressure sensor

Compressors in supermarket refrigeration systems are black-colored heavy equipment located bottom of the freezers with evaporators and fans that blow freezing air. Supermarket refrigeration systems typically import compressors and evaporators with different temperature ranges. Freezing-temperature for packaged seafood and dumplings, and a low-temperature system for the beverage and fresh meat, and cool temperature for vegetables and fruits. Large-scale supermarkets can have parallel refrigerating systems operating at multiple temperatures and differential pressures. These systems have separated manifolds that share the outlets of the compressors that sustain pressure at a set level. And the end evaporators freezing the different food cases at different temperatures. The refrigeration control system uses pressure sensors as an integral part of that system to control the pressure and thereby overheating and over chilling in the refrigerant circuit.

.Some evaporators in large supermarket that use chilled water typically are called the rooftop chillers. In rooftop chillers, there are extra refrigerant pressure transducer used to control the pumps that distribute chilling water.

The refrigeration system runs at the wanted temperature until cut off by the thermostat switch，which pending by the rating of temperature controller of the fan-forced air around the evaporator.

But one pressure sensor may enough for a small refrigeration system. The most critical location is on the suction side of the compressor.

These systems use a switch to sense the amount of pressure in the system. Insufficient pressure indicates there has been a refrigerant leak that may lead to an overheated compressor and possible damage.

walk-in fast-food-restaurant freezers with refrigerant pressure transducer
and refrigerated rail cars with refrigeration pressure sensor

Stainless steel is the only material touching the refrigerant and most of the therefrigerant pressure transducers have applied stainless steel housing. Most refrigeration pressure sensors are built using ceramic-capacitive with piezo-resistive foil technology. The sensing element in ceramic-capacitive sensors consists of a ceramic body bonded to a thin diaphragm. As pressure is applied to the diaphragm, it deflects and reduces the spacing between the plates of the capacitors, thus boosting the capacitance of the sensing capacitor. Due to the lower power consumption of silicon material sensors, the application of new silicon chips has become more and more popular in recent years.

Wheatstone-bridge is applied between two steel shell and a rippled foil. When The foil bulges under pressure, unbalancing the Wheatstone-bridge, the bridge generating signal values according to the pressure. Because the temperature change will cause the measurement accuracy of the Wheatstone circuit to fluctuate, thereby causing errors in each range, the refrigerant pressure transducers will have a temperature compensation circuit to correct these error values

A TYPICAL REFRIGERATION CYCLE FOR REFRIGERATION PRESSURE SENSOR
What happens during a typical refrigeration cycle, and when do the refrigeration pressure sensor works

Step 1: Beginning at the compressor, the refrigerant is compressed and leaves the compressor as a high temperature, high-pressure gas.

Step 2: The hot refrigerant enters the condenser, where it is cooled by fan-forced air; then the refrigerant leaves the condenser as a warm liquid and continues on to the thermal expansion valve.

Step 3: The expansion valve meters the proper amount of refrigerant into the evaporator.

Step 4: The sudden pressure drop after the expansion valve converts the high-pressure warm liquid refrigerant into a low-pressure, cold gas. The cold gas absorbs ambient heat from fan-forced air passing through the evaporator. This ambient heat converts the refrigerant into a cool dry gas. From here the refrigerant reenters the compressor to be pressurized again, and the cycle repeats.

HOW THE PRESSURE TRANSMITTERS WORK FOR REFRIGERANT PRESSURE TRANSDUCER
Pressure transmitters are used on the high-pressure side and low-pressure side of the compressor to control and optimize the cycle. A LEFOO pressure transmitter located at or near the compressor outlet detects a low refrigerant charge by monitoring the compressor’s discharge of pressure and temperature.

Output signals from the pressure transmitter are sent to a PLC. When a high discharge temperature with a low discharge pressure is detected, the PLC provides a low charge signal. The PLC can also receive additional input about operating characteristics of the refrigeration system, providing a more accurate low charge signal. The PLC is connected to a warning indicator and/or compressor so that the low charge signal activates the indicator and/or deactivates the compressor.

POTENTIAL PROBLEMS FOR REFRIGERANT PRESSURE TRANSDUCER
Refrigeration systems often suffer from hidden equipment faults and inefficient controls. Undetected problems in a refrigeration system can result in high energy costs and shorter equipment life. By installing the proper monitoring equipment and adopting an efficient control strategy, costly problems such as these can be prevented:

If one of the filters becomes clogged, the restricted flow will create a pressure drop in the system, reducing efficiency and leading to unnecessary costs. Suction line filters keep the refrigerant clean and protect the compressor from taking in debris.

Hidden refrigerant leaks can eventually lead to a low refrigerant charge. A low charge can lessen efficiency and add to annual operating costs. Repairing leaks can remarkably boost performance.

In many refrigeration systems, head pressure stays at a fixed level to assure reliability over a wide range of temperatures. This also assists in maintaining sufficient refrigerant flow, freeze protection for the condenser, and an adequate pressure difference across expansion valves.

LEFOO PRESSURE TRANSMITTER SELECTION CONSIDERATIONS:
High accuracy

High repeatability

Compatibility with refrigerants

Condensation proof.

LEFOO PRESSURE TRANSMITTER(2023年03月12日)

lefoogroup — 2023-03-10T14:38:51+0900

https://www.folkd.com/detail/https://www.lefoogroup.com/products/pressure-transmitter
A pressure Transmitter (pressure transducer) converts the physical quantity 'force per area' into an industry-standard signal that machines can read. Pressure transmitter manufacturer LEFOO offers pressure sensors and pressure transducers at precise exactness of 0.1%FS,0.25%FS,0.5%FS,1%FS

LEFOO PRESSURE TRANSMITTER
A Pressure Transmitter is a device that produces an output electrical signal (ma or microvolt) that varies with the pressure it experiences. When pressure is forced on the crystal chip inside the sensor and the deformed crystal generates a signal. The signal will be transferred by the wire to a display or monitor that can show the signal in value. For example: 4ma=0, 12ma =50 psi, 20ma=100 psi... Pressure sensors are used to inspect the pressure of the gas, fluid, or another medium.

As the pressure transmitter manufacturers, LEFOO pressure control designs multiple types of pressure sensor transducers at lower costs and good prices. The pressure sensor transducer includes water level differential pressure sensor, absolute vacuum pressure sensor, smart room temperature pressure sensor, industrial digital hydraulic pressure sensor, piezoresistive pressure sensor, pneumatic pressure sensor with display, OEM pressure sensor, etc.

LEFOO PRESSURE TRANSDUCER
A pressure sensor transducer is a device that consists of a pressure sensor and a signal amplifier, a pressure transducer will translate measured data into a stronger electrical analog signal that can be read and shown on a display by the program controller. A Pressure transmitter is a device that converts a low-class electrical signal from a sensor or transducer to a higher class or a form of data that is available for long distances transmission. Such as 4-20 mA or 485 digital output. These outputs can transmit over long distances. Some transmitters can provide additional data about the device or process measured as part of the communication. The(1-5,1-10)voltage signal is the most stable signal in electrical noisy situations like energy-related industries.

LEFOO PRESSURE SWITCH(2023年03月12日)

lefoogroup — 2023-03-10T14:38:18+0900

https://sco.lt/7HNWNs

A pressure switch is a control device that runs a switch on or switch-off action when a preset pressure value occurs. LEFOO pressure switches are mainly used as the flow controller for fluid or gas in applications such as HVAC systems, water pumps, boilers, gas tanks.

LEFOO MECHANICAL PRESSURE SWITCH
A mechanical adjustable pressure switch applies a spring-triggered piston sealed by a diaphragm and rubber O ring. Generally, The spring is the opposing force to the inlet pressure and the spring's pretension is adjusted with a male stud screw by a female screwdriver. People preset a targeted high pressure on the male-threaded stud inside the pressure switch which is subjected to trigger the off switch, and a preset low-pressure value to trigger the switch. For example, in the hot pipeline of an HVAC system, when the compressed high-temperature high-pressure air comes and the pressure rises to an exact value which will trigger the off switch, the spring pretension directly correlates to the pressure at which the switch makes an electric contact. When the pressure drops, the switch resets to its original state and turns on the switch. The low-pressure switch and the high-pressure switch in the HVAC system are two types of basic refrigeration switches in a typical high-taste residential system.

The mechanical pressure switch is better suited for handling high voltages and amperages than an electronic pressure switch. They can be used to make a contact change for an increase or decrease in pressure.

Common applications of the mechanical pressure switch
HVAC, air compressor blowers, gas cylinders, air compressor cut off switch, generator sets, off-road vehicles, compressors, wafer ovens, process equipment, flow control devices, pumps, wastewater, heating and cooling systems, and numerous other applications from LEFOO pressure control across industries.

Electronic pressure switches
An electronic pressure switch is controlled by the charging signal generated from a pressure sensor, Which is proportional to the pressure. Thus, not only is it identified whether the defined switch point has been reached, but the actual measured pressure is transmitted. Electronic pressure switches often feature a display from which the measured pressure can be read, digital air pressure switch and switching buttons also offer adjustable settings. Switch points, pressure output signals can be individually adjusted to suit the remote monitor control application.

The pros of electronic pressure switches are precise measurement, intelligent remote controllable, The con is the price is much higher than mechanical pressure switch and not suitable for extremely high-temperature high-pressure measurement and applications.

Pressure: It must be able to withstand the maximum working pressure. A diaphragm design works well for vacuum and low-pressure applications. For high-pressure applications, use a piston design.

Temperature: It must be able to work well within its maximum and minimum temperature range.

Repeatability: Repeatability, or accuracy, is the ability of the device to accurately switch back to the same set point for every repetition. The range of accuracy required will determine the selection of the pressure switch for your application. Diaphragm designs generally provide more accuracy than piston designs.

Electronic pressure switches are suitable for automated and controlled equipment systems that require programmable function, digital display, flexibility, accuracy, ingress protection, and stability. Common media used with pressure switches are Hydraulic oil, Heating oil, Turpentine, Petrol/gasoline, Air. The automatic pump control switch for water pump applied to the water system will automatically start and stop the water pump according to the set pressure value.

LEFOO PRESSURE SWITCH
As a pressure switch manufacturer, Lefoo group was launched in 2000, Lefoo manufacture pressure switches for an extensive range of industries include -10000 pa to 10000 pa, and from 0~200 bar. Such as HVAC, refrigeration, air, compressor and pump pressure, automatic water pump, vacuum, steam, differential pressure, float, miniature and vacuum, high pressure, level, and digital switches and sensors to meet the utmost needs of industrial application and harsh environment. Each LEFOO pressure switch is high accuracy with numerous pressure ranges, flexible for any connections.

LEFOO PERISTALTIC PUMP(2023年03月11日)

lefoogroup — 2023-03-10T14:37:34+0900

https://www.folkd.com/detail/https://www.lefoogroup.com/products/peristaltic-pump
Peristaltic pumps are a type of dosing pump that uses the principle of peristalsis as the basis for their design. Optimal for the precise transfer control for liquid, solution, paste.

LEFOO Peristaltic pumps, Optional Brushless/Stepper Motor. High temperature/Chemical resistance chemical dosing pump. Chemical dispenser. Optional various soft tubes. Precise flow control

Stepper Motor Peristaltic Pump
Peristaltic pumps are very popular fluid transfer equipment with a wide range of applications. Peristaltic pumps can be classified according to the motor type into stepper motor peristaltic pump, DC motor peristaltic pump, servo motor peristaltic pump, explosion-proof motor peristaltic pump, etc.

As peristaltic pump manufacturers, LEFOO pressure control possesses scalable technology applied in peristaltic dosing hose pump to meet different process needs. Using our cheap peristaltic pump, the hose is the only part that needs to be replaced. Like our stepper motor peristaltic pump which is not only inexpensive but also quickly replaceable on site.

LEFOO FLAT FILM PRESSURE SENSOR(2023年03月11日)

lefoogroup — 2023-03-10T14:37:01+0900

https://sco.lt/8j4lUG

Diaphragm Pressure Transmitter
Pressure Type: Guage/ Absolute
Diffusion silicon core + 316L thin diaphragm
Pressure Accuracy： 0.25%FSO / 0.5% FSO
Electrical Connection: Parkard / Big Hessman / M12

Excellent silicon wafer, Wheatstone-bridge and pressure-sensitive diaphragm are sealed in a steel house filled with glycerine or silicone to encase the interior components of the sensor. diaphragm sensors are very sensitive to rapid pressure changes. -- they are commonly used in very corrosive environments or with extreme over-pressure situations.

LEFOO SENSOR SELECTION CRITERIA, A GOOD FLAT PRESSURE SENSOR SHOULD HAVE THE PROS UNDER BELOW
1. Fine sealing, available in the viscous medium and easy to clean up the residual stains.

2.High measurement accuracy, good stability,

3. small size and convenient installation.

4. high-cost performance.

In Lefoo pressure transmitter manufacturer, pressure sensor are able to give accurate and precise readings for controller to control electronic instrument to prevent overflow or avoid empty run damage, which are good for energy effectively and achieve long-term operating, However, some factors influence the suitability of flat pressure sensors: the characteristics of the measured media, environmental conditions, pressure range, and the level of precision in measurements made.

Absolute pressure -Pressure measured in vacuum zero pressure environment, atomospheric pressure plus gauge pressure.

Gauge Pressure - Pressure measured in ambient atmosphere. absolute pressure minus atmospheric pressure.

Differential Pressure - pressure measurement based on same medias or in same facility in two positions.

LEFOO DC RO DIAPHRAGM BOOSTER PUMP(2023年03月11日)

lefoogroup — 2023-03-10T14:36:23+0900

https://sco.lt/8aHCSG

This Ro booster water pump series is powered by ferrite magnetic motor, 0.5/0.7 Mpa pressure feeding, 43~60db noise level, adjustable pressure, workflow 0.6~5.5 Liter per minute, max current 1.4~5.5A of this ro water pump.

BRIEF INTRODUCTION OF LEFOO RO BOOSTER MOTOR PUMP

The RO booster motor pump is optimal for water purifiers. Easy to install booster pump for osmosis devices. The RO motor booster pump increases the pressure to 5-7 bar (75-100psi), which greatly improves RO water quality and quantity. The increased pressure also allows the membrane to work more efficiently often giving a lower TDS in the RO product water.

Reverse osmosis is a pressure application process. Pressure is proportional to the efficiency of the RO water system, and also the power consumption. Low pressure feeding a reverse osmosis membrane can cause more rejected water and less RO drink water. If the water pressure is much lower than RO semi- membrane requirements, then adding a booster pump for the osmosis system is quite vital. Residential water pressure tends to range between 45 and 80 psi (pounds per square inch).

HOW TO SELECT RO BOOSTER MOROR PUMP FROM LEFOO
The RO Self-Priming Water Pump LFP1075S,1075 means the ro water pump can be used on water purifier75 GPD, with vacuum pressure that is able to transfer water where the static water resource. The Economic RO Self-priming Pump LFP1075S-P is the price cut version. The Residential Booster ro water Pump LFP1075J means this ro motor pump is smaller in size when compared to LFP1075S; LFP1075W means this ro water pump can set with adjustable pressure. Voltage: 24VDC

If you want to know more about ro water pump price, please contact us.

LEFOO AIR COMPRESSOR CUT OFF SWITCH(2023年03月10日)

lefoogroup — 2023-03-10T14:36:01+0900

https://sco.lt/8jvYsS

There are numerous types of lefoo pressure switch for air compressor cut off switch that come on the market. In pressure switch manufacturer, Picking the right air compressor pressure switches depending on what the air compressing system is. A new pressure switch is usually more precise than repairing an old one, while adjustable digital pressure switches give you more convenience when using them.

LEFOO RO 300 GPD PUMP(2023年03月10日)

lefoogroup — 2023-03-10T14:35:38+0900

https://sco.lt/7H5vFo

300 GPD Pump / Pressure Booster Pump / Self-Priming Pump
Work Flow: 2.6L/min or 2.7L/min
Work Pressure: 0.5Mpa=70Psi
Noise Level: ≦53db / ≦55db
Max Current: ≦3.2A / ≦4.5A

LEFOO Offering Diaphragm Booster Pump, Water Booster Pump for reverse osmosis systems and water purifiers, and water pressure feeding applications since 1985. 300 GPD pump can increase the pure water production rate for all Solid Filter Cartridges in Water Purifiers, Reduce the rejection water rate. Stable long term pressure adding of 70 psi, The ro water pump is quiet with workflow ≧2700ml/min, Ideal for water purifiers in kitchens, offices, and shops.

LEFOO 150 GPD RO BOOSTER PUMP(2023年03月10日)

lefoogroup — 2023-03-10T14:35:04+0900

https://sco.lt/64RQ2q

RO Booster Pump 150 GPD
Pressure Booster Pump / Self-Priming Pump
Work Flow: 1.45L/min or 1.5L/min
Work Pressure: 0.5Mpa=70Psi
Noise Level: ≦48db / ≦50db
Max Current: ≦2.0A / ≦2.8A<

The 150-gpd reverse osmosis pump for house is guaranteed to provide the power for the RO system which removes up to 99% of harmful pollutants such as chlorine, toxic fluoride, detergent，arsenic, lead, nitrates, such as odor, VOCs，bacterials, The RO system is the cost-saving solution for safe drinking water and with no need of buying costly bottled water. enjoy fresh, great-tasting water right at home that is perfect for drinking and cooking. The contaminant-free drinking water offers you great safety in live basics. The 150 gpd ro booster pump for the house is specially designed for low-pressure water areas where a standard RO system would not function well( most RO membranes require 60 Psi real water pressure).

Designed, manufactured, and tested in the LEFOO, the reverse osmosis pump is put through a rigorous quality control process to eliminate the slightest component imperfection, ensuring a smooth-running system that is free from noises, leaks, and clogs. LEFOO GROUP provides a reliable production rate for the large family and beverage shop that demands the best. Based in China with 1 decade of experience in RO motor pump. design and production, We introduce the complex and complete testing processes to ensure ro motor pump qualities.LEFOO is committed to producing top-reliable pumps that provide 10 years of trouble-free, high quantity great taste drinking water.

High-pressure feeding: Lefoo pumps can add 75 Psi of pressure to the fluid.

Long work span: Lefoo RO pumps can serve 2000 hours of actual working time (1000 hours economic versions also have)

High water flow: The booster pump 150 gpd for house is rated at 150 gallons per day ( Lefoo have various series of RO pumps ranging from50~2000GPD).

LEFOO RO 100 GPD PUMP(2023年03月10日)

lefoogroup — 2023-03-10T14:34:36+0900

https://www.folkd.com/detail/https://www.lefoogroup.com/products/100-gpd-ro-booster-pumps
RO booster pump 100 GPD
Pressure Booster Pump / Self-Priming Pump
Work Flow: 0.98L/min or 1.05L/min
Work Pressure: 0.5Mpa=70Psi
Noise Level: ≦45db / ≦50db
Max Current: ≦1.4A / ≦2.1A

The water purifier manufacturers can employ 100 gpd pump as pressure boosting devices in their products. The reverse osmosis system can remove 98-99 % of contaminants in the tap water or static water resource.
The ro booster pump 100 gpd can increase the water production efficiency by 70 psi pressure feeding.

REVERSE OSMOSIS OF RO BOOSTER PUMP 100 GPD
Reverse Osmosis is the reverse process of natural osmosis. Solutions with low salinity and low density have a natural tendency to migrate to solutions with high salinity and high density. The reverse osmosis membrane of the RO water booster pump divides the water into two pass way, the permeated water passes through the RO membrane to the clean water tank, and the rejected water goes to the waste solution tank. The RO system will remove the majority of dissolved salts, contaminants, bacteria, and things that make water taste bad. By applying pressure the efficiency of purifying water is greater than the naturally Reverse Osmosis. The RO water has a fresh healthy taste that is better than tap water by use RO motor pump.

There are many contaminants in raw water and not required in pure water applications.

Primary contaminants
Microorganisms,Cyclospora,Viruses,Giardia,Legionella,Inorganic Chemicals,Barium,Chromium,Fluoride,Selenium,Copper,Lead,Mercury,Nitrate,Cyanide,Organic Chemicals,Benzene,Carbon Tetrachloride,Disinfection Byproducts,Bromate,Disinfectants,Chlorine,Radionuclides, Uranium,Radium

Secondary contaminants
Aluminum, Color, Iron, Manganese, Odors, Sulfate, Total Dissolved Solids (TDS).

Unregulated Contaminants
Ammonia,Boron,Calcium,Nickel,Pesticides,PFOA & PFOS,Prescription Drugs,Silica,Algae

If you want to know more about ro pump price, please contact us.

THE FUNCTION AND APPLICATION OF BOOSTER PUMP FOR WATER PURIFIER(2022年)

lefoogroup — 2022-12-05T15:42:57+0900

https://www.lefoogroup.com/the-function-and-application-of-booster-pump-for-water-purifier.html

1. INTRODUCTION OF LEFOO EXTERNAL BOOSTER PUMP FOR WATER PURIFIER

As the name implies, ro water pump is a pump used for pressurization. Its main uses are water heater pressurization, low water pressure in high buildings, sauna, bathing and other pressurization, pressurization of insufficient water pressure on the uppermost floor of the apartment, solar automatic pressurization, reverse osmosis purification. Water booster, etc.

Remarks: Diaphragm pumps and booster pumps are two completely different types of pumps.

The booster pump for household water purifiers is a diaphragm booster pump. The principle is to use a diaphragm to boost pressure, which is a diaphragm pump.

2. THE ROLE OF THE BOOSTER PUMP FOR WATER PURIFIER IN THE WATER PURIFIER:

3. WHAT IS THE DIFFERENCE BETWEEN A BOOSTER PUMP FOR WATER PURIFIER AND A SELF-PRIMING PUMP?

The booster pump can be used normally when the water pressure is above 1 kg. When using the booster pump, try to use the water pressure above 1.5 kg.

Remarks: The quality of the pump is also distinguished and judged by the self-priming pump, not the water purifier booster pump.

4. HOW TO JUDGE WHETHER TO USE A BOOSTER PUMP FOR WATER PURIFIER OR A SELF-PRIMING PUMP?

LEFOO develops and manufactures reliable, high quality standard pressure control, temperature control equipment, providing innovative solutions and components. Welcome to consult.

Now the peristaltic pump price is reasonable, anything you need, please leave us a message.

THE CLASSIFICATIONS AND WORKING PRINCIPLES OF RO BOOSTER PUMP(2022年)

lefoogroup — 2022-12-05T15:38:37+0900

https://www.lefoogroup.com/the-classifications-and-working-principles-of-ro-booster-pump.html

Ⅰ. DEFINITION OF LEFOO RO BOOSTER PUMP

Ⅱ. CLASSIFICATION OF RO BOOSTER PUMPS

2. Classified according to the environment of use, it can be divided into ordinary RO booster pumps and 0-pressure RO booster pumps for municipal water pressure zones. The 0-pressure RO booster pump is mainly used in rural areas and other areas with no water pressure and low water pressure. It is also called a 0-pressure pump (or self-priming pump).

Ⅲ. WORKING PRINCIPLES OF RO FILTER PUMP

If you want to know more sorts of peristaltic dosing pump, please leave us a message.

LEFOO SODA WATER DISPENSER(2022年)

lefoogroup — 2022-12-05T15:37:25+0900

https://www.lefoogroup.com/soda-water-dispenser.html

A soda pump dispenser can get you cold soda water, and RO pumps are optimal for liquid transfer such as soda waters.

As one of peristaltic pump manufacturers, we can offer different kinds of related products for sale, if you have needs, please contact us.

WATER PRESSURE SENSOR(2022年)

lefoogroup — 2022-12-05T15:36:55+0900

https://www.lefoogroup.com/products/water-pressure-sensor/

Drinking water pressure sensor are frequently used for inlet and outlet water pipe pressure measurement in clean water systems at public utilities.

Small Size Water Pressure Sensor LFT221
WATER PRESSURE SENSOR AND WATER PIPE PRESSURE MEASUREMENT
Water pipe pressure sensors are frequently used for inlet and outlet water pipe pressure measurement in clean water systems at public utilities. Some water systems are fed by the gravity flow of the water, usually, lift stations pump the water to a higher elevation to provide reliable gravity flow. Water pressure in the pump well, water tower needs to be monitored by a water differential pressure sensor to control the predetermined water flow rate at the pump input, which turns off the pump at a minimum flow rate to prevent empty run damage. Also, pump well and water tower that undergoes a large release of water require water supplement. Pressure sensors for water pumps offer reliable pressure measurement for the pump and the observer can determine when to adjust additional pressure and flow by the measured values.

A water differential pressure sensor hvac is generally placed in a position such as:

the water input side of the water pipe pressure sensor.

Pump output side

Clean end location (pump wet well, elevated pipe...)

An important part of digital differential pressure sensor selection is ensuring that any electronic transducer transmitter used is compatible with potable water. Pressure transducers are responsible for monitoring the pressure, at various locations throughout clean water systems and often interface with pumps to show, when increased pressure or flow rates are necessary.

TECHNOLOGIES USED TO NEUTRALIZE WATER?

During the process, water becomes wastewater due to its exposure to contaminants so it has to go through other rigorous treatments before you release it into natural reservoirs.

Moreover, most of the Industrial factories are now doing on-site treatment of wastewater to cut the costs, and to recycle it back to the manufacturing process.

Moreover, the wastewater cleaning process is based on multiple steps. This process cleanses water from harmful bacteria, chemicals, organic and inorganic compounds of water.

It is possible to install pressure instruments on the inside of the waste treatment pipes, pumps, and reservoirs.

In addition, these pressure instruments help industries to maintain safe pressure levels and also prevent equipment failure.

To measure the treatment process, you need to install the water quality instruments inline. The type of meter required per phase depends on the testing environment.

The system in question is also a matter of concern in this regard.

Use of Pressure Sensor for sewage treatment:
We use water pipe pressure sensors for measuring the pressure of gas or liquid and variables such as the flow of liquid or gas, speed, water level, and elevation.

A water pipe pressure sensor is an electronic device. We also use it to detect, regulate, and monitor pressure. In addition, it converts pressure into an analog electrical signal.

Moreover, the pressure sensor converts the perceived data into an electronic signal.

TECHNOLOGIES USED BY PRESSURE SENSOR FOR SEWAGE TREATMENT.
There are 6 major technologies used by pressure sensors for sewage treatment:

Potentiometric pressure sensors

Inductive pressure sensors

Capacitive pressure sensors

Piezoelectric pressure sensors

Strain gauge pressure sensors

Variable Reluctance pressure sensors

PIEZOELECTRIC PRESSURE SENSORS:
These sensors rely on the ability of the materials. Also, their purpose is to generate an electrical potential when you subject the material to mechanical stress. We call this process the piezoelectric effect.

Pressure sensors are of four types;

Aneroid Barometer Sensors

Manometer Sensors

Bourdon Tube Pressure Sensors

Vacuum Pressure Sensors

Water pressure sensors, or water pressure transducers produced by LEFOO company, are used in residential, commercial clean water distribution utilities for water elevated piping pressure measurement. The inlet and outlet water Pipe pressure measurement in water treatment facilities and water purify industries is very important, in the wastewater treatment industry, the measurement of water flow is also vital. Water pressure transducer is also applied in irrigation systems. LEFOO produces various pressure sensors and transducers with excellent accuracy and long-term stability. There is some basic information in this content to review before making a decision on the type of pressure sensor is required.

REFRIGERATION PRESSURE SENSOR(2022年)

lefoogroup — 2022-12-05T15:36:15+0900

https://www.lefoogroup.com/products/refrigeration-pressure-sensor/

Refrigeration Pressure Transducer
Pressure Type: Gauge
Working temperature: -40~120°C
Protection Level: IP67
Pressure Accuracy: 0.8% FSO

Refrigeration Pressure Transmitter LFT2060
Refrigeration Pressure Sensor LFT2600

REFRIGERATION PRESSURE SENSORS AND REFRIGERATION SYSTEM
Refrigeration pressure sensors are essential measurement device in controlling the refrigeration system in today's cold chain operating. Refrigeration systems often encounter with latent facility faults and inefficient temperature management. These problems can result in high energy costs and shorter machine lifespan. Compressors, air fans, and defrost operations in refrigeration systems take the highest percentage of energy use in whole Refrigeration system. Larger units employ complex control systems to optimize working times and reduce electricity costs. The electricity price per unit in many countries is proportional to the electric range, while commercial electricity and industrial electricity have a higher unit price than that of civil electricity.

Commonly duct pressure sensor is placed at two positions in the refrigeration system. The first is on the outlet viper line of the evaporator, which is also close to the compressor inlet. That refrigeration pressure transducer sensor, together with a temperature sensor measuring pressure and generate data for the system pressure controller, the controller classifies the fans, controls the expansion valves in many systems. The second refrigeration pressure transducer sensor is on the discharge line of the compressor. Here we introduce some principles of refrigeration.

Most large refrigeration systems employ two refrigeration pressure transducer sensors in both locations. Commercial large-scale cold storage needs a huge amount of refrigerant, and the physical size of the compressor gets bigger and electricity cost becomes significant.

.Some evaporators in large supermarket that use chilled water typically are called the rooftop chillers. In rooftop chillers, there are extra pressure sensors used to control the pumps that distribute chilling water.

The refrigeration system runs at the wanted temperature until cut off by the thermostat switch，which pending by the rating of temperature controller of the fan-forced air around the evaporator.

But one pressure sensor may enough for a small refrigeration system. The most critical location is on the suction side of the compressor.

walk-in fast-food-restaurant freezers

Stainless steel is the only material touching the refrigerant and most of the pressure sensors have applied stainless steel housing. Most refrigeration pressure sensors are built using ceramic-capacitive with piezo-resistive foil technology. The sensing element in ceramic-capacitive sensors consists of a ceramic body bonded to a thin diaphragm. As pressure is applied to the diaphragm, it deflects and reduces the spacing between the plates of the capacitors, thus boosting the capacitance of the sensing capacitor. Due to the lower power consumption of silicon material sensors, the application of new silicon chips has become more and more popular in recent years.

Wheatstone-bridge is applied between two steel shell and a rippled foil. When The foil bulges under pressure, unbalancing the Wheatstone-bridge, the bridge generating signal values according to the pressure. Because the temperature change will cause the measurement accuracy of the Wheatstone circuit to fluctuate, thereby causing errors in each range, the sensor will have a temperature compensation circuit to correct these error values

A TYPICAL REFRIGERATION CYCLE
What happens during a typical refrigeration cycle, and when do the refrigeration pressure sensor works

USING PRESSURE TRANSDUCERS TO MINIMIZE SUPERHEAT IN AIR CONDITIONING AND REFRIGERATION SYSTEMS

Refrigeration Pressure Sensor

PRESSURE TRANSMITTER SELECTION CONSIDERATIONS:
High accuracy

High repeatability

Compatibility with refrigerants

Condensation proof

PRESSURE TRANSMITTER(2022年)

lefoogroup — 2022-12-05T15:35:35+0900

https://www.lefoogroup.com/products/pressure-transmitter/

A pressure Transmitter (pressure transducer) converts the physical quantity 'force per area' into an industry-standard signal that machines can read. Pressure transmitter manufacturer LEFOO offers pressure sensors and pressure transducers at precise exactness of 0.1%FS,0.25%FS,0.5%FS,1%FS

As the pressure sensor manufacturers, LEFOO pressure control designs multiple types of differential pressure transducer at lower costs and good prices. The pressure sensor transducer includes water level differential pressure sensor, absolute vacuum pressure sensor, smart room temperature pressure sensor, industrial digital hydraulic pressure sensor, piezoresistive pressure sensor, pneumatic pressure sensor with display, OEM pressure sensor, etc.

THE DEFINITIONS OF ABSOLUTE PRESSURE, GAUGE PRESSURE, AND DIFFERENTIAL PRESSURE

FLAT FILM PRESSURE SENSOR(2022年)

lefoogroup — 2022-12-05T15:34:41+0900

https://www.lefoogroup.com/products/flat-film-pressure-sensor/

Diaphragm Pressure Transmitter
Pressure Type: Guage/ Absolute
Diffusion silicon core + 316L thin diaphragm
Pressure Accuracy： 0.25%FSO / 0.5% FSO
Electrical Connection: Parkard / Big Hessman / M12

General Type Flat Film Pressure Sensor LFT2700
Clamp Type Sanitary Flat Film Pressure Sensor LFT2020

SENSOR SELECTION CRITERIA, A GOOD FLAT PRESSURE SENSOR SHOULD HAVE THE PROS UNDER BELOW
1. Fine sealing, available in the viscous medium and easy to clean up the residual stains.

2.High measurement accuracy, good stability,

3. small size and convenient installation.

4. high-cost performance.

pressure sensor are able to give accurate and precise readings for controller to control electronic instrument to prevent overflow or avoid empty run damage, which are good for energy effectively and achieve long-term operating, However, some factors influence the suitability of pressure sensors: the characteristics of the measured media, environmental conditions, pressure range, and the level of precision in measurements made.

CHARACTERISTICS OF THE MEASURED MEDIA
The flat differential air pressure sensor(elastic element) will be exposed to the medias used in the measuring process, therefore corrosion resistant metal diaphragms or foil are optimal for very harsh environments. The materials which might react with the process substances or degrade in corrosive media are unsuitable for use in the sensor.

ENVIRONMENT CONDITIONS
Corrosive environments, vibrations near pipe fittings, or extreme high temperatures are vital for the selecting of pressure sensors for the purpose of protect the pipes and facilities in very harsh environments.

PRESSURE RANGE
Pressure sensors or pressure transducers are designed with a limit of certain pressure ranges for different equipment and facilities. Because Large and complex equipment requires multiple sensors with high accuracy, but small civilian equipment may only need one sensor with ordinary accuracy, to choose the right pressure transducer is very important in the process.

SENSITIVITY
The more precise the pressure transducer, the more expensive it is, thus choosing pressure transducers that available to reach the wanted precision at the most suitable price is quite worthy. The compromise between accuracy and measuring time is also quite important, is unadvisable to use sensors that take a lot of time to give accurate pressure readings, High accuracy measure reading at short measuring time is viable when the price is very high.

TYPES OF PRESSURE
Pressure is defined as force per unit area and is in calculate units of psi, Pa, Kpa, and Bar. Three type of reference pressures are used in pressure measuring industries.

Absolute pressure -Pressure measured in vacuum zero pressure environment, atomospheric pressure plus gauge pressure.

Gauge Pressure - Pressure measured in ambient atmosphere. absolute pressure minus atmospheric pressure.

Differential Pressure - pressure measurement based on same medias or in same facility in two positions.

APPLICATION
Flat pressure sensors are widely used in a variety of industries such as petrochemical, water purify ink, paint, mud and Dairy products with a certain possibility of viscous measurement.

Flat film pressure sensor

AIR COMPRESSOR PRESSURE SWITCH(2022年)

lefoogroup — 2022-12-05T15:34:02+0900

https://www.lefoogroup.com/products/air-compressor-pressure-switch/

Pressure Range: 15~60psi / 40~250psi / 400~500 psi
Stable and accurate pressure switching
Rare metal parts, durable quality
Optimal for heavy duty commercial air compressors
Robust structure for industrial harsh conditions

Air Compressor Cut Off Switch LF10
Air Compressor Pressure Switch Valve LF10L
LEFOO Air Compressor Pressure Switch LF17

There are numerous types of pressure switches for air compressors that come on the market. Picking the right air compressor pressure switches depending on what the air compressing system is. A new pressure switch is usually more precise than repairing an old one, while adjustable digital pressure switches give you more convenience when using them.

Intelligent air compressor pressure switches made by LEFOO pressure control are instruments of pressure measurement, display, and control. The air compressor cut-in and cut-off switch can automatically control the relay output according to the pressure in the tubing. Compared with the mechanical switch, it has the characteristics of simple operation, clear display, anti-vibration, and high control accuracy.

We also have kinds of pressure differential monitor for sale, anything you need, please leave us a message.