Lanso Instruments LLC.

Hydraulic Pressure Gauge(2024年02月23日)

lansoinstruments — 2024-02-23T12:07:19+0900

https://www.lansoinstruments.com/products/hydraulic-pressure-gauge/

Hyd Pressure Gauge
Hydraulic pressure gauges/meters are mainly used to measure the pressure of liquid medium in hydraulic systems. The tube expansion causes traveling of the tube end. After the transfer and the amplificaton by the movements and rods, the pointer will indicate readings in the scale of the gauges. The hydraulic pressure meter can be used in various complicated circumstances. Diaphram devices can be added to assist the pressure measurement of the special oils with high viscocity, easy crystallization, easy consolidation, and granule contenting.

LANSO hydraulic pressure gauges/meters include hydraulic pressure gauge 400 bar, hydraulic pressure gauge 600 bar, hydraulic pressure gauge 1000 psi, 3000 psi hydraulic gauge and 6000 psi hydraulic pressure gauge.

Hydraulic Pressure Gauge List
B32.ST+C Stainless Steel Pressure Gauge – Electrical Contacts B32.ST+C Stainless Steel Pressure Gauge – Electrical Contacts
B32.ST Stainless Steel Pressure Gauge B32.ST Stainless Steel Pressure Gauge
B32.SA Stainless Steel Pressure Gauge – Safety Design B32.SA Stainless Steel Pressure Gauge – Safety Design
B36.SA Phenol Casing Pressure Gauge B36.SA Phenol Casing Pressure Gauge
B32.ST+DS27 Flat-Flange Diaphragm Pressure Gauge B32.ST+DS27 Flat-Flange Diaphragm Pressure Gauge
Explore A Range of Industries With High Performance Pressure Measuring Products
Oil & Gas
Petrochemicals
Power System
Firefighting
Food & Beverage
Biotech & Pharmaceuticals

FAQ of Hydraulic Pressure Gauge
How much pressure should a hydraulic press have?+
On most presses, the maximum pressure will be no more than 200 bar or 3000 psi, which can choose our 3000 psi hydraulic gauge.

Why is hydraulic pressure is considered reliable and accurate?+
Hydraulic press are reliable and accurate because they are based on Pascal's law which says that: Pressure on a confined fluid is transmitted undiminished and acts with equal force on equal areas and at 90 degrees to the container wall."

How much force can a hydraulic press produce?+
So for example, our hydraulic pressure gauge 1000 psi says 1000 PSI or pounds per square inch, that 1000 pounds per square inch is applied to 10 square inches. This means that each square inch of surface area is applying 1000 pounds of force and there are 10 square inches giving us a total of 10,000 pounds of force.

Now the price of hydraulic gauges for sale is reasonable, anything you need, please contact us.

Lanso Instruments Inc. is a Canada-based industrial products manufacturer & supplier specializing in pressure measurement device. The company's extensive product portfolio and dedication to high-quality products have earned us high brand recognition and established long-term partnerships with multinational corporations including ABB, HYOSUNG, TOSHIBA, SCHNEIDER, SIEMENS, and so on.

If you want to know more kinds of equipment used to measure pressure, please visit our website.

How to Read the Vacuum Pressure Gauge?(2024年02月23日)

lansoinstruments — 2024-02-23T12:06:26+0900

https://www.lansoinstruments.com/how-to-read-the-vacuum-pressure-gauge.html

How to Read the Vacuum Pressure Gauge?
1. Overview of vacuum pressure gauge
The vacuum pressure gauge is an instrument used for vacuum pressure measurement. It uses atmospheric pressure as a reference and is an instrument used to measure less than atmospheric pressure.

2. How to read the vacuum pressure gauge?
The pressure units on the vacuum pressure gauge include inHg, bar, MPa, PSI, 1MPa=145psi. It is easier to read the pressure in terms of MPa. R and the number are the code names of the refrigerant gauge. The pressure of the refrigerant gauge is closely connected with the temperature. In engineering industry, the kilograms of pressure are referred to kg/cm2, and the pressure gauge is often marked with mpa. 1 N/m2=1 Pa, 1 kg=9.8 N, 1m2=10000 cm2, so 1kg/cm2=98 KPa = 0.098 MPa. Generally, people take an approximate value of 1 MPa=10 kg/cm2.

The range of the vacuum pressure gauge starts from zero, and the range of the absolute pressure gauge starts from -1 Bar. The pressure gauge is widely used for measuring the pressure of the liquid, gas, steam and other media that are not corrosive to the alloy in pipelines and containers.

3. The use of vacuum pressure gauge
The vacuum pressure gauge has the advantages of small size, safety and reliable performance, and clear display. There are two ways to express pressure: one is the pressure expressed on the basis of absolute vacuum, called absolute pressure; the other is the pressure expressed on the basis of atmospheric pressure, called relative pressure.

Since the pressure measured by most pressure measuring instruments is relative pressure, it is also called gauge pressure. When the absolute pressure is less than atmospheric pressure, the absolute pressure in the container can be represented by a value that is less than one atmospheric pressure, which is called "vacuum".

As a tool to measure pressure manufacturer, we can provide kinds of tools used to measure pressure for sale, if you are interested, please leave us a message.

How to Choose a Pressure Gauge when Measuring Low Pressure, Micro Pressure or Negative Pressure Media?(2024年02月23日)

lansoinstruments — 2024-02-23T12:05:48+0900

https://www.lansoinstruments.com/how-to-choose-a-pressure-gauge-when-measuring-low-pressure-micro-pressure-or-negative-pressure-media.html

How to Choose a Pressure Gauge when Measuring Low Pressure, Micro Pressure or Negative Pressure Media?
In many projects, the objects that need to be measured are small pressures and negative pressures, such as measuring flue pressure, air duct pressure, pressure difference between the two ends of the filter. How should we choose a suitable pressure gauge meter? In this case, bellows pressure gauge meter, vacuum pressure gauge meter or U-tube negative pressure meter, single tube pressure gauge meter and inclined tube pressure gauge meter are usually selected.

The elastic element of the bellows micro pressure gauge meter is a bellows. The general bellows is composed of two circular diaphragms with corrugations welded together, one fixed and one free. When the pressure of the measuring medium acts on the inner cavity of the bellows through the joint, the deformation of the free end bellows is transmitted to the pulling rod, which drives the gear mechanism to rotate, and then drives the pointer to display the measured medium pressure. The material of the bellows is generally copper alloy and 316 stainless steel. Because of its large force area and large output thrust, it is suitable for low-pressure and negative pressure gauge measurement tool. For example, the measurement range is 0~10 kPa, -20~20 kPa. It cannot be used for the measurement of high-pressure media. (You may need information about pressure gauge manufacturers)

When selecting vacuum pressure gauge meters and pressure vacuum gauges, the characteristics of the measured medium should be considered. For example, elastic components made of copper and copper alloys are only suitable for measuring low pressure and vacuum pressure of liquids and gases that do not crystallize, solidify, and have no corrosive effect on copper and copper alloys.

The difference between the vacuum pressure gauge meter and the pressure vacuum gauge is: the vacuum pressure gauge meter is based on the atmospheric pressure and is used to measure the instrument that is less than the atmospheric pressure, such as the measurement range: -20~0 kPa; the pressure vacuum gauge is based on the atmospheric pressure and is used Instruments that measure pressure greater than and less than atmospheric pressure, such as measuring range: -20~20 kPa. Their measuring principle is that the pressure of the medium causes the elastic element to deform, which is amplified by the linkage gear mechanism to drive the pointer.

When measuring low pressure or negative pressure, such as flue and air duct pressure, liquid column pressure gauges are sometimes used. They include U-tube, single-tube and inclined tube pressure gauges. The liquid column pressure gauge meter uses the principle of static pressure balance, with simple and reliable structure, low price, high sensitivity and high precision. The disadvantage is that it is inconvenient to carry, there is no over-range protection, and the measured medium and working fluid need to be matched. When the working fluid of the liquid column pressure gauge meter is determined, the measured pressure P has a linear relationship with the liquid column H. The liquid column H is often used to indicate the pressure value.

Now the micro pressure gauge price is reasonable, anything you need, please contact us.

As a tools used to measure pressure manufacturer, we can provide kinds of pressure measurement devices for sale, if you are interested, please leave us a message.

How does the Density Transmitter Work?(2024年02月23日)

lansoinstruments — 2024-02-23T12:04:52+0900

https://www.lansoinstruments.com/how-does-the-density-transmitter-work.html

A density transmitter is a device that continuously measures density online. It can be directly used in industrial production processes. According to Archimedes principle, it adopts electronic technology, which consists of a capacitive differential pressure sensor and its connection, a pair of pressure sensitive diaphragms with a temperature sensor between them. It can offset the temperature change of the process liquid.

The density transmitter can electronically offset the nonlinear state change of SF6 gas according to Virial equation. It can collect the pressure and temperature of SF6 gas in the equipment (tank), and then use these two variables to determine the current gas density through an electronic evaluation system. The system will dynamically offset the thermally induced pressure change to avoid the influence on the output signal.

The density transmitter has high long-term stability without the need of zero set and maintenance. The wetted parts are all made of stainless steel (standard). The airtight welded measuring element can maintain good airtightness for a long time. The measuring element adopts a special structure design without any internal seals and the risk of leakage. Because of that, the gas density transmitter is not affected by atmospheric pressure fluctuations and installation heights.

The EMI (Electromagnetic Interference) performance of the density transmitter is tested according to IEC 61000-4 to IEC 61000-4-6 standards, which can ensure safe signal acquisition. It is especially suitable for high-voltage switchgear.

Density Transmitter Working Principle

A density transmitter is a device used to measure the density of a liquid or a gas. It works based on the principle of buoyancy, which states that an object immersed in a fluid experiences an upward force equal to the weight of the fluid it displaces.

The density transmitter typically consists of a measuring cell, which is a hollow tube or cylinder immersed in the fluid whose density is to be measured. The measuring cell contains a vibrating element, such as a tuning fork or a quartz crystal, which vibrates at a frequency that is proportional to the density of the fluid.

As the fluid flows through the measuring cell, it causes the vibrating element to vibrate at a different frequency, which is detected by a sensor. The sensor then converts the frequency signal into an electrical signal, which is processed and displayed as a density reading.

The density transmitter may also include temperature and pressure sensors, which allow for compensation of changes in these variables that can affect the density measurement accuracy.

Overall, the density transmitter provides a reliable and accurate measurement of the density of fluids in a variety of industrial applications, such as chemical processing, petroleum refining, and food production.

As a tool used to measure pressure manufacturer, we will do our best to meet all the needs of customers.

How does a bourdon type pressure gauge work?(2024年02月23日)

lansoinstruments — 2024-02-23T12:04:17+0900

https://www.lansoinstruments.com/how-does-an-air-pressure-gauge-work.html

How does a bourdon type pressure gauge work?

Pressure tubes function by taking the pressure and converting it into mechanical energy. This energy moves a dial in our best air pressure gauges, displaying the current amount of pressure in the system. ... As pressure increases inside the tube, the force of the fluid attempts to straighten out the curved tube.

Explore A Range of Industries With High Performance Pressure Measuring Products
Oil & Gas
Petrochemicals
Power System
Firefighting
Food & Beverage
Biotech & Pharmaceuticals

If you want to know more about bourdon gauge working principle, please visit our website.

As a tool to measure gas pressure manufacturer, we will do our best to meet all the needs of customers.

How accurate are bourdon tube pressure gauge?(2024年02月23日)

lansoinstruments — 2024-02-23T12:03:49+0900

https://www.lansoinstruments.com/how-accurate-are-air-pressure-gauges.html

As a general rule a common plunge bourdon type gauge you would purchase will be accurate to + or – 3 psi when it is new. The accuracy of these different types of bourdon tube pressure gauges is also affected by temperature, humidity, and altitude. Note: Always check the tire pressure when the tires are cold, before traveling.

Explore A Range of Industries With High Performance Pressure Measuring Products
Oil & Gas
Petrochemicals
Power System
Firefighting
Food & Beverage
Biotech & Pharmaceuticals

If you want to know more about bourdon gauge function, please visit our website.

Now the price of apparatus to measure pressure is reasonable, if you have needs to buy tool used to measure pressure, please contact us.

Food & Beverage(2024年02月23日)

lansoinstruments — 2024-02-23T12:03:19+0900

https://www.lansoinstruments.com/food-beverage-using-meaturing-instrument.html

Where Hygiene Meets Precision

From soda pops to boutique wine, from canned lunch to diet shakes, hygiene is the bottom-line and, literally, the life-line of a food and beverage company. From handling and mixing to processing and packaging, every step requires a precise control to avoid contamination and ensure quality of products. Lanso offers a comprehensive solution and instrument to measure liquid pressure for food and beverage processing industries with the highest level of precision and compliance to hygienic standards, satisfying your need and taste.

Hygienic Standards and Safety

Lanso F&B-industry instruments, like the fluid pressure measuring devices, are manufactured in compliance with international standards including:

FDA (Food and Drug Administration)

EHEDG (European Hygienic Engineering & Design Group)

3-A Sanitary Standards, Inc.

ATEX (directive 94/9/EC)

Now the price of equipment used to measure pressure is reasonable, if you have needs to buy pressure measurement device, please contact us.

Common Types of Pressure Gauges(2024年02月23日)

lansoinstruments — 2024-02-23T12:02:17+0900

https://www.lansoinstruments.com/common-types-of-pressure-gauges.html

Common Types of Pressure Gauges
There are many types of gauges, each of which is best suited for a specific task. The traditional round micro make pressure gauge is one of the most common types of pressure gauges. This is a very common handheld design. On the other hand, industrial process style instruments are suitable for more frequent use and heavy-duty applications. Next, we detail some of the most common pressure gauges types.

1. Analog pressure gauge

The analog pressure gauge is a traditional type of pressure gauge. They use needles and mechanical internals to function. Accurate and reliable analog gauges are highly adaptable and can be used in many different applications. When using an analog pressure gauge, try to make the normally applied pressure approximately half of the full scale of the pressure gauge.

2. Digital pressure gauge

Electronic or digital pressure gauges are modern equipment. They usually have diaphragms and strain gauges. They are characterized by their digital display, this kind of small air pressure gauge makes readings easier to identify and record.

3. Differential pressure gauge

Differential pressure is a measure of one pressure relative to another. Therefore, the differential pressure gauge works by using two ports and measuring the pressure difference between the two ports. This kind of device that measures air pressure can be positive pressure or negative pressure.

4. Absolute pressure gauge

Absolute pressure gauges are designed to measure pressure relative to vacuum. This means that it will take readings under complete or absolute vacuum. As a result, the absolute pressure is always positive. Such an instrument for measuring air pressure is mainly used for barometers, altimeters and atmospheric or deep vacuum equipment.

5. Hydraulic pressure gauge

The hydraulic pressure gauge provides a higher pressure range. For some models, it may be as high as several hundred bars. The hydraulic gauge should be used with oil.

6. Atmospheric pressure gauge

The barometer is used to measure air pressure. These micro air pressure gauges are mainly used by meteorologists. They are useful to help predict weather patterns and provide weather forecast data.

Now the price of device used to measure pressure of gas is reasonable, if you have needs, please contact us.

Hydraulic Pressure Gauge(2023年08月09日)

lansoinstruments — 2023-08-02T18:38:49+0900

https://www.lansoinstruments.com/products/hydraulic-pressure-gauge/

Hyd pressure gauge are mainly used to measure the pressure of liquid medium in hydraulic systems. The tube expansion causes traveling of the tube end. After the transfer and the amplificaton by the movements and rods, the pointer will indicate readings in the scale of the gauges. The hydraulic pressure test meter can be used in various complicated circumstances. Diaphram devices can be added to assist the pressure measurement of the special oils with high viscocity, easy crystallization, easy consolidation, and granule contenting.

LANSO hydraulic gauges for sale/meters include hydraulic pressure gauge 400 bar, hydraulic pressure gauge 600 bar, hydraulic pressure gauge 1000 psi, 3000 psi hydraulic gauge, 5000 psi, 6000 psi hydraulic pressure gauge, 10000 psi hydraulic pressure gauge.

For more information about tool to measure gas pressure and sf6 gas density monitor, please feel free to contact us!

How to Read the Vacuum Pressure Gauge?(2023年08月08日)

lansoinstruments — 2023-08-02T18:38:22+0900

https://www.lansoinstruments.com/how-to-read-the-vacuum-pressure-gauge.html

1. Overview of vacuum pressure gauge
The vacuum pressure gauge is an instrument used for vacuum pressure measurement. It uses atmospheric pressure as a reference and is an instrument used to measure less than atmospheric pressure.

For more information about tool to measure gas pressure and sf6 gas density monitor, please feel free to contact us!

How to Choose a Pressure Gauge when Measuring Low Pressure, Micro Pressure or Negative Pressure Media?(2023年08月07日)

lansoinstruments — 2023-08-02T18:37:25+0900

https://www.lansoinstruments.com/how-to-choose-a-pressure-gauge-when-measuring-low-pressure-micro-pressure-or-negative-pressure-media.html

In many projects, the objects that need to be measured are small pressures and negative pressures, such as measuring flue pressure, air duct pressure, pressure difference between the two ends of the filter. How should we choose a suitable micro pressure gauge meter? In this case, bellows negative pressure gauge meter, vacuum pressure gauge meter or U-tube pressure gauge meter, single tube pressure gauge meter and inclined tube pressure gauge meter are usually selected.

The elastic element of the bellows negative pressure meter is a bellows. The general bellows is composed of two circular diaphragms with corrugations welded together, one fixed and one free. When the pressure of the measuring medium acts on the inner cavity of the bellows through the joint, the deformation of the free end bellows is transmitted to the pulling rod, which drives the gear mechanism to rotate, and then drives the pointer to display the measured medium pressure. The material of the bellows is generally copper alloy and 316 stainless steel. Because of its large force area and large output thrust, it is suitable for low pressure and negative pressure measurement tool. For example, the measurement range is 0~10 kPa, -20~20 kPa. It cannot be used for measurement of high-pressure media.

When selecting vacuum micro air pressure gauge meters and pressure vacuum gauges, the characteristics of the measured medium should be considered. For example, elastic components made of copper and copper alloys are only suitable for measuring low pressure and vacuum pressure of liquids and gases that do not crystallize, solidify, and have no corrosive effect on copper and copper alloys.

For more information about tools used to measure pressure and micro pressure gauge price, please feel free to contact us!

If you are looking for a reliable pressure gauge manufacturer, don't hesitate to contact us!

How does the Density Transmitter Work?(2023年08月06日)

lansoinstruments — 2023-08-02T18:36:56+0900

https://www.lansoinstruments.com/how-does-the-density-transmitter-work.html

The density transmitter has high long-term stability without the need of zero set and maintenance. The wetted parts are all made of stainless steel (standard). The airtight welded measuring element can maintain good airtightness for a long time. The measuring element adopts a special structure design without any internal seals and the risk of leakage. Because of that, the density transmitter is not affected by atmospheric pressure fluctuations and installation heights.

Density Transmitter Working Principle

The density transmitter may also include temperature and pressure sensors, which allow for compensation of changes in these variables that can affect the density measurement accuracy.

For more information about tool used to measure pressure and pressure instrument types, please feel free to contact us!

How does a bourdon type pressure gauge work?(2023年08月05日)

lansoinstruments — 2023-08-02T18:36:29+0900

https://www.lansoinstruments.com/how-does-an-air-pressure-gauge-work.html

How does a bourdon type pressure gauge work?

Pressure tubes function by taking the pressure and converting it into mechanical energy. This energy moves a dial in our best air pressure gauge, displaying the current amount of pressure in the system. ... As pressure increases inside the tube, the force of the fluid attempts to straighten out the curved tube.

For more information about tool to measure pressure, please feel free to contact us!

How accurate are bourdon tube pressure gauge?(2023年08月04日)

lansoinstruments — 2023-08-02T18:35:52+0900

https://www.lansoinstruments.com/how-accurate-are-air-pressure-gauges.html

As a general rule a common bourdon type gauge you would purchase will be accurate to + or – 3 psi when it is new. The accuracy of these different types of bourdon tube pressure gauges is also affected by temperature, humidity, and altitude. Note: Always check the tire pressure when the tires are cold, before traveling.

For more information about pressure measurement device and bourdon gauge function, please feel free to contact us!

If you are looking for a reliable pressure gauge manufacturer, don't hesitate to contact us!

Food & Beverage(2023年08月03日)

lansoinstruments — 2023-08-02T18:34:56+0900

https://www.lansoinstruments.com/food-beverage-using-meaturing-instrument.html

Where Hygiene Meets Precision

Hygienic Standards and Safety

Lanso F&B-industry instruments, like the fluid pressure measuring devices to measure liquid pressure, are manufactured in compliance with international standards including:

FDA (Food and Drug Administration)

EHEDG (European Hygienic Engineering & Design Group)

3-A Sanitary Standards, Inc.

ATEX (directive 94/9/EC)

For more information about equipment used to measure pressure and tool used to measure pressure, please feel free to contact us!

Common Types of Pressure Gauges(2023年08月02日)

lansoinstruments — 2023-08-02T18:34:25+0900

https://www.lansoinstruments.com/common-types-of-pressure-gauges.html

There are many types of gauge, each of which is best suited for a specific task. The traditional round pressure gauge is one of the most common pressure gauges types. This is a very common handheld design. On the other hand, industrial process style instruments are suitable for more frequent use and heavy-duty applications. Next, we detail some of the most common pressure gauge types.

1. Analog pressure gauge

The analog micro make pressure gauge is a traditional type of pressure gauge. They use needles and mechanical internals to function. Accurate and reliable analog gauges are highly adaptable and can be used in many different applications. When using an analog pressure gauge, try to make the normally applied pressure approximately half of the full scale of the pressure gauge.

2. Digital pressure gauge

3. Differential pressure gauge

4. Absolute pressure gauge

5. Hydraulic pressure gauge

The hydraulic pressure gauge provides a higher pressure range. For some models, it may be as high as several hundred bars. The hydraulic gauge should be used with oil.

6. Atmospheric pressure gauge

The barometer is used to measure air pressure. These micro air pressure gauges are mainly used by meteorologists. They are useful to help predict weather patterns and provide weather forecast data.

For more information about device used to measure pressure of gas, please feel free to contact us!

Diaphragm Pressure Gauge(2023年06月07日)

lansoinstruments — 2023-05-26T15:25:06+0900

https://www.lansoinstruments.com/products/diaphragm-pressure-gauge/

Diaphragm pressure gauges are mainly used to measure the pressure of special media such as high-viscosity media, granular media, crystallizable media and easy-to-solidification media.

They can measure various corrosive media using the flanges and isolation diaphragms of different structures, suitable for sanitation systems (without out-of-sight corners and residues), etc.

Lanso is committed to offer diaphragm type pressure gauge with reasonable diaphragm pressure gauge price.

FAQ of Diaphragm Pressure Gauges
Why are different filling fluids filled into diaphragm pressure gauge types?+
The filling liquid is selected according to the temperature of measuring media, the ambient temperature of the instrument and "no harm" requirements for filling liquid.

How to improve the accuracy and temperature performance of diaphragm pressure gauges?+
Please choose the flanges with large specifications (i.e., large diameter) at the low range for better accuracy and temperature performance of the diaphragm seal type pressure gauge.

Precautions for cleaning of diaphragm pressure gauge+
When the diaphragm pressure gauges are cleaned, only flush the diaphragm area, and do not contact the diaphragms with hard objects, and prevent the diaphragms from being damaged.

How does a diaphragm pressure gauge work?+
The measured media are separated from the measuring system by using the diaphragm. After the diaphragm senses the pressure of the measured media, the diaphragm conveys the pressure to the Bourdon tube depending on the filling liquid of which the measuring system is full, so that the end of the Bourdon tube moves due to elastic deformation. Through transmission and amplification of the mechanical transmission mechanism (connecting rod and movement), the pointer turns on the dial to indicate the corresponding readings.

How to install a diaphragm pressure gauge if the field space is limited?+
Diaphragm pressure gauges can pass through a capillary so that the measuring instruments and flanges are installed at different positions.

As a pressure measurement device manufacturer, we will do our best to meet all the needs of customers.

SF6 Gas Density Switch(2023年06月06日)

lansoinstruments — 2023-05-26T15:24:34+0900

https://www.lansoinstruments.com/products/density-switch/

Density switch is a kind of gas density monitor used to monitor the density of SF6 gas in a sealed container. It can display the density of gas on site and give an alarm when the density value reaches the set value. It is suitable for the high pressure measurement of high pressure system. Can provide new substation supporting and existing substation intelligent transformation and other solutions.

Lanso is one of a leading density switch supplier, providing a variety of gas density switch products with top-quality and high-accuracy.

More kinds of tool used to measure pressure, please visit our website.

SF6 Gas Density Relay(2023年06月05日)

lansoinstruments — 2023-05-26T15:23:52+0900

https://www.lansoinstruments.com/products/density-monitor/

The SF6 relay gas density meter with pointer and scale installed on the SF6 circuit breaker is called the density meter; SF6 density relay or density pressure switch without pointer and scale. Some SF6 gas density meter also has electric contact, which doubles as density relay. They are dedicated meters for measuring SF6 gas.

SF6 circuit breaker, as a new type of high-voltage electrical switching equipment developed in modern times, has been widely used in power systems due to its superior performance, safety and reliability, easy maintenance and long service life, etc. A density relay is a relay that monitors air leakage from a sealed container.

Lanso is devoted to developing medium and high-end SF6 gas density monitor, and manufactures better gas density monitors in the market depending on advanced equipment.

More kinds of tools used to measure pressure, please visit our website.

CV Self-Sealing Valve(2023年06月04日)

lansoinstruments — 2023-05-26T15:23:24+0900

https://www.lansoinstruments.com/products/cv-self-sealing-valve.html

This product is a device connecting SF6 gas density monitor meter or density meter and SF6 gas chamber; after the completion of the assembly, SF6 gas chamber can be effectively sealed. It can be applied to high and medium voltage equipment.

Application of CV Self-Sealing Valve

SF6 Gas Insulated Switchgear (GIS)

SF6 insulated circuit breakers

SF6 insulated pole-mounted switch

SF6 insulated transformer

SF6 insulated mutual inductor

SF6 Gas insulated busbar systems

SF6 insulated inflatable cabinet

SF6 insulated RMU

Feature of CV Self Sealing Valve

Self-sealing: If the device or connector is removed, self-sealing can be done

It can be used repeatedly

Can be used on outdoor switching devices

SF6 gas inflation and vacuum device can be connected

Can be used to connect the SF6 gas recycling device

Technical Data of CV Self-Sealing Valve
Valve material:stainless steel, aluminum or a copper alloy
Nominal diameter：6. 8.12 mm (Medium voltage equipment)
20mm (High-voltage equipment)
Surface finish:Aluminum: Oxidation treatment
Stainless steel, copper alloys:Not processed
Ambient conditions:-40°C to +60°C
Leakage rate:≤1 × 10-9 Pa·m3/s (Helium leakage inspection)

Options of CV Self-Sealing Valve

Interface size: customizable

Nominal diameter of density valve: customizable

If you want to know more kinds of tool to measure gas pressure, please visit our website.

Bourdon-tube Manometer(2023年06月03日)

lansoinstruments — 2023-05-26T15:22:59+0900

https://www.lansoinstruments.com/products/bourdon-tube-manometer/

Bourdon-tube manometers are devices for measuring pressure that is widely used in various circumstances to measure the pressure of the gas and liquid medium with high precision and easy reading advantages. Diaphram devices can be added to assist the pressure measurement of the special corrosive medium.

Bourdon-tube Manometer List
B32.ST Stainless Steel Pressure Gauge B32.ST Stainless Steel Pressure Gauge
B32.SA Stainless Steel Pressure Gauge – Safety Design B32.SA Stainless Steel Pressure Gauge – Safety Design
B32.ST+C Stainless Steel Pressure Gauge – Electrical Contacts B32.ST+C Stainless Steel Pressure Gauge – Electrical Contacts
B36.SA Phenol Casing Pressure Gauge B36.SA Phenol Casing Pressure Gauge
B32.ST+DS27 Flat-Flange Diaphragm Pressure Gauge B32.ST+DS27 Flat-Flange Diaphragm Pressure Gauge

Explore A Range of Industries With High Performance Pressure Measuring Products
Oil & Gas
Petrochemicals
Power System
Firefighting
Food & Beverage
Biotech & Pharmaceuticals

How does a bourdon type pressure gauge work?+
Pressure tubes function by taking the pressure and converting it into mechanical energy. This energy moves a dial in our best air pressure gauge, displaying the current amount of pressure in the system. ... As pressure increases inside the tube, the force of the fluid attempts to straighten out the curved tube.

Can a bourdon tube gauge be used for oil?+
Oil, water and an air pressure measuring device for sale are interchangeable, as long as the pressure you are checking doesn't exceed the gauge limit.

Is bourdon tube manometer the same as water pressure?+
The difference is that water is an incompressible fluid — its density is almost constant as the pressure changes — while air is a compressible fluid — its density changes with pressure which needs a bourdon tube manometer to measure. Atmospheric pressure is the pressure exerted on a surface by the weight of the atmosphere (a compressible fluid) above it.

If you want to know more details of bourdon pressure gauge measures, please visit our website.

As a pressure gauge manufacturer, we can offer sorts of apparatus to measure pressure for sale, anything you need, please leave us a message.

Bourdon-tube Manometer(2023年06月02日)

lansoinstruments — 2023-05-26T15:22:26+0900

https://www.lansoinstruments.com/products/bourdon-tube-manometer/

Bourdon-tube manometers are device to measure air pressure that is widely used in various circumstances to measure the pressure of the gas and liquid medium with high precision and easy reading advantages. Diaphram devices can be added to assist the pressure measurement of the special corrosive medium.

Explore A Range of Industries With High Performance Pressure Measuring Products
Oil & Gas
Petrochemicals
Power System
Firefighting
Food & Beverage
Biotech & Pharmaceuticals

FAQ of Bourdon Tube Pressure Gauge
How accurate are bourdon tube pressure gauge?+
As a general rule a common plunge type gauge you would purchase will be accurate to + or – 3 psi when it is new. The accuracy of these different types of bourdon tube pressure gauges is also affected by temperature, humidity, and altitude. Note: Always check the tire pressure when the tires are cold, before traveling.
How does a bourdon type pressure gauge work?+
Pressure tubes function by taking the pressure and converting it into mechanical energy. This energy moves a dial in our best air pressure gauge, displaying the current amount of pressure in the system. ... As pressure increases inside the tube, the force of the fluid attempts to straighten out the curved tube.

Can a bourdon tube gauge be used for oil?+
Oil, water and air pressure gauges for sale are interchangeable, as long as the pressure you are checking doesn't exceed the gauge limit.

We can offer kinds of instrument measure air pressure for sale, and the price of an instrument for measuring air pressure is reasonable, if you have needs to buy instrument of air pressure, please leave us a message.

If you want to know more types of equipment used to measure pressure, please visit our website.

Lanso Pressure Measurement Instrument(2023年06月01日)

lansoinstruments — 2023-05-26T15:21:57+0900

https://www.lansoinstruments.com/products/

Lanso Steam Pressure Measurement Instrument

Our current line of an instrument used for pressure measurement features Gas Density Monitor Series, Pressure Gauges and Meters, Differential Gauges, Diaphragms and Valves, Online Monitoring Systems, Filling Fluids and Accessories. Primary clients industries include electrical power systems, biotechnology & pharmaceuticals, food & beverages, oil & gas and petrochemical industries.

Different Types Pressure Measuring Instruments
SF6 Gas Density Monitor
SF6 Gas Density Monitor Lanso is committed to offering SF6 Gas Density Monitor, which includes density relay, density meter, density switch, density transmitter, valves and instruments.

Pressure Measurement Gauge
Pressure Measurement Gauge The pressure measuring series include different types of mechanical pressure gauges, differential pressure gauges, digital steam pressure gauges and pressure transmitters, suitable for all working environments.

Pressure Instruments Customized Service
for Your Personalized Needs
Best Solutions
Lanso can provide profession pressure instruments solutions for our clients.
Professinal Approach
Our current pressure instruments line features Gas Density Monitor Series, pressure gauges and meters, Differential Gauges.
Expert Team
Lanso owns an expert R&D team and we are still keeping developing our technologies to improve the quality of our pressure instruments.

FAQ of Measuring Instruments for Pressure
Are the measuring results affected by altitude?+
If the instrument is not sealed, the pressure differences of the media and environment are measured by the instrument for measuring pressure, and are not affected by altitude; if the instrument is hermetically sealed, the pressure differences of the media and sealing space inside the instrument are measured by the instrument, and are affected by altitude.

What effect does pressure fluctuation have on the instrument? How to solve?+
If the media pressure fluctuates, the measuring results of the instrument used for pressure measurement fluctuate and are unstable and difficult to read; a damper can be additionally mounted to keep the instrument pressure stable.

Why is the differential digital hydraulic gauge equipped with a valve group?+
The valve group can fill low-pressure gas at both ends of the differential pressure gauge, and fill high-pressure gas at the high-pressure side, which can prevent unilateral overpressure load during the start-up and operation of the instrument. Besides, zero check can also be carried out when the measuring instrument of pressure is running.

Which instruments are additionally mounted with the diaphragm system?+
Almost all instruments and transmitters can be additionally mounted with diaphragm system. Additional diaphragm system can be selected according to the actual use.

If you want to know more kinds of digital gas pressure meter, please visit our website.

Now the price of device used to measure pressure of gas is reasonable, if you have needs, please leave us a message.

What Are the Types of Pressure Gauges?(2023年)

lansoinstruments — 2023-04-14T12:46:57+0900

https://www.lansoinstruments.com/what-are-the-types-of-pressure-gauges.html

Here are the different types of mechanical pressure gauges:

1. Liquid column pressure gauge

The liquid column pressure gauge is based on the principle of statics, which converts the measured pressure into the height of the liquid column for pressure measurement. Such instruments include U-tube pressure gauges, single-tube pressure gauges, and inclined tube pressure gauges. Commonly used pressure measuring and indicating liquids are alcohol, water, carbon tetrachloride and mercury. The advantages of this type of pressure gauge are simple structure, sensitive response and accurate measurement; the disadvantage is that it is limited by the density of the liquid, and the pressure measurement range is narrow. When the pressure fluctuates sharply, the liquid column is not easy to stabilize, and there are strict requirements on the installation position and posture. Generally, it is only used to measure low pressure and vacuum degree, and mostly used in the laboratory.

2. Elastic pressure gauge

As a kind of apparatus to measure pressure, the elastic pressure gauge measures the pressure by converting the measured pressure into the displacement of the element according to the principle of deformation of the elastic element. Common ones are spring tube pressure gauge, bellows pressure gauge, diaphragm (diaphragm) pressure gauge. This type of pressure gauge is simple in structure, durable, cheap, reliable in operation, and has a wide measuring range. It is suitable for low-pressure, medium-pressure, and high-pressure production occasions. It is the most widely used pressure measuring instrument in the industry. However, the measurement accuracy of elastic pressure gauges is not very high, and most of them use mechanical pointer output, which is mainly used for on-site instructions at the production site. When remote signal transmission is required, additional devices must be installed.

3. Pressure sensor and pressure transmitter

Pressure sensors and pressure transmitters use certain physical characteristics of objects to convert the measured pressure into various electrical signals through different conversion elements, and indirectly measure pressure according to the changes in these signals. According to the different conversion components, pressure sensors and pressure transmitters can be divided into resistive, capacitive, strain-type, inductive, piezoelectric, and Hall plates.

The biggest feature of this type of pressure measuring instruments is that the output signal is easy to transmit remotely, and can be conveniently used with various display, recording and adjustment instruments, thereby creating conditions for centralized pressure monitoring and control. It is widely used in the production process automation system.

For more information about pressure measurement device, please feel free to contact us!

Types of Pressure Measuring Instrument(2023年)

lansoinstruments — 2023-04-14T12:46:33+0900

https://www.lansoinstruments.com/types-of-pressure-measuring-instrument.html

Types of Pressure Measuring Instrument
The different types pressure measuring instruments are divided into liquid column type, elastic type and electric measuring type according to the working principle. The pressure gauge can indicate and record the pressure value, and can be equipped with an alarm or control device. The pressure measured by the instrument includes absolute pressure, atmospheric pressure, positive pressure (usually called gauge pressure), negative pressure (usually called vacuum) and differential pressure. The measured engineering technology is mostly gauge pressure.

The international unit of pressure is Pa, and other units include: engineering atmospheric pressure, bar, millimeter water column, millimeter mercury column. Pressure is an important parameter in industrial production. For example, when the pressure of a high-pressure vessel exceeds the rated value, it is unsafe and must be measured and controlled. In some industrial production processes, pressure also directly affects product quality and production efficiency. For example, when producing synthetic ammonia, nitrogen and hydrogen not only need to be synthesized under a certain pressure, but the pressure directly affects the output.

The following is a brief introduction of different types of different pressure measuring devices.

1. U-shaped tube pressure gauge

The measuring range of U-shaped tube pressure gauge is generally 0～±800 mm water column or mm Hg, and the accuracy is level 1. It can measure gauge pressure, vacuum degree, differential pressure and standard differential pressure gauge as calibration flow meter. Its characteristic is that the zero scale is in the middle of the scale plate, there is no need to adjust the zero before use, and the height of the liquid column needs two readings.

2. Elastic pressure gauge

The elastic pressure gauge, an instrument used to measure gauge pressure, is generally composed of a joint, a spring tube, a pull rod, a gear transmission mechanism, a pointer, a dial and a housing. When the instrument is working, the pressure of the measured medium enters the inner cavity of the spring tube through the joint, and the free end of the spring tube produces a displacement proportional to the pressure under the action of the internal pressure. The gear transmission mechanism is driven by the post to turn the displacement into a corner and amplify it. The pointer fixed on the central axis of the mechanism is indicated on the dial with graduations.

3. Hall pressure gauge

Hall pressure gauge is a pressure measuring instrument made of Hall effect. When the measured pressure is introduced, the free end of the spring tube is displaced, thereby driving the Hall plate to move, changing the magnetic induction intensity applied to the Hall plate, and converting it into a change in Hall potential according to the Hall effect, achieving a conversion of pressure-displacement-Hall potential.

Lanso Instruments Inc. Provides tool to measure pressure, pressure gauge, gas density transmitter, water pressure manometer, measuring instruments for pressure, the instrument for measuring pressure, an instrument to measure pressure, measuring instrument of pressure and etc. For more information, please feel free to contact us!

Type of Pressure Measurement(2023年)

lansoinstruments — 2023-04-14T12:45:55+0900

https://www.lansoinstruments.com/type-of-pressure-measurement.html

1. Absolute pressure

The pressure with absolute vacuum as the zero reference.

2. Positive pressure

A pressure more than atmospheric pressure based on atmospheric pressure.

3. Negative pressure

The pressure less than atmospheric pressure based on atmospheric pressure.

4. Differential pressure

The difference between the two pressures.

5. Gauge pressure

Based on atmospheric pressure, a pressure more than or less than atmospheric pressure.

LASON, provides various pressure measuring devices for different needs. The application includes the Oil & Gas, Petrochemicals, Power System, Firefighting, Food & Beverage, Biotech & Pharmaceuticals.

Lanso Instruments Inc. Provides tool used to measure pressure, pressure gauge, sf6 density monitor, water pressure manometer and etc. For more information about types of pressure measurement, please feel free to contact us!

The Function and Principle of SF6 Gas Density Meter(2023年)

lansoinstruments — 2023-04-14T12:45:22+0900

https://www.lansoinstruments.com/the-function-and-principle-of-sf6-gas-density-meter.html

1. The role of SF6 gas density meter and density relay

The so-called density refers to the mass per unit volume of a specific substance under specific conditions. The SF6 gas in the SF6 circuit breaker is sealed in a fixed container. It has a certain density value under the rated pressure at 20℃. Within the range of various allowable conditions for the operation of the circuit breaker, although the pressure of SF6 gas changes with temperature, the density value of SF6 gas is always the same. Because the insulation and arc extinguishing performance of SF6 circuit breakers depends to a large extent on the purity and density of SF6 gas, the detection and density monitoring of SF6 gas purity is particularly important. If an ordinary pressure gauge is used to monitor the leakage of SF6 gas, it will be difficult to distinguish whether the pressure change of SF6 gas is caused by the actual leakage or the change of the ambient temperature. In order to achieve the purpose of frequent monitoring of density, SF6 circuit breakers should be equipped with SF6 gas density meters or density relays. The SF6 meter is for monitoring, and the density relay is for control and protection.

SF6 density meter installed on SF6 circuit breaker, with pointer and scale is called density meter; without pointer and scale but with electrical contact is called density switch; with pointer, scale and electrical contact is called a SF6 relay. They are all dedicated meters used to measure SF6 gas.

2. The working principle of SF6 gas density gauge

1. When the sf6 density monitor is not installed and used, if the ambient temperature is 20℃, the pointer points to 0MP, but if the ambient temperature is not 20℃, because the double-layer metal belt is compensated according to the difference between the ambient temperature and 20℃, so, when the ambient temperature is higher than 20°C, the double-layered metal belt stretches, and its lower end will be displaced in the direction of movement when the pressure is reduced, driving the gear mechanism and pointer to move in the direction where the density or pressure indication value decreases, and the reading of the pointer is less 0MP; otherwise, when the ambient temperature is lower than 20℃, the gear mechanism and pointer will move in the direction of increasing density or pressure indication value, and the reading of the pointer is greater than 0MP.

2. During the process of charging the circuit breaker with SF6 gas, as the gas pressure gradually increases, the end of the elastic metal curved pipe is displaced in the direction of the pressure increase, and the double-layer metal belt is always compensated at 20°C. With the displacement in the direction of movement when the pressure increases, the gear mechanism and the pointer are driven to move in the direction where the density or pressure indication value increases, and the indication value becomes larger. The indicated value of the density gauge or pressure gauge is not only related to pressure, but also related to temperature. In the process of charging the circuit breaker with SF6 gas, due to the sudden expansion and pressure drop of SF6 gas, the temperature generally drops from the ambient temperature to below 0℃. The double-layer metal belt is always compensated at 20℃, and the actual temperature and environment of SF6 gas cannot be adjusted. The temperature difference between the temperatures is compensated. Therefore, in this case, the indicated value of the density meter cannot represent the density or pressure value of the SF6 gas at the actual temperature, nor can it represent the density or pressure value at the ambient temperature, let alone represent the density or pressure value at 20°C.

3. After the circuit breaker is filled with SF6 gas, wait for a period of time to allow the internal temperature of the SF6 circuit breaker to rise to equilibrium with the external environment temperature, then adjust the SF6 gas to the rated density or pressure value. At this time, regardless of whether the pressure of SF6 gas is increased or decreased due to the influence of the ambient temperature, the pointer of the density meter always points to the rated pressure or density value at 20°C due to the temperature compensation effect of the double-layer metal belt.

4. After the circuit breaker is out of operation, if the temperature of the SF6 gas inside the circuit breaker is in equilibrium with the external environment temperature, the indicated density or pressure value will not change with the change of the external environment temperature. When the ambient temperature rises, the temperature of the SF6 gas inside the circuit breaker also rises, and the pressure also increases. The end of the elastic metal tube moves in the direction of movement when the pressure increases, which drives the pointer to the density or pressure. However, since the double-layer metal belt stretches as the ambient temperature increases, and its lower end moves in the direction of movement when the pressure decreases, the changes in the two are completely offset, and the result is the indicator value of the pointer remains unchanged, that is, the density or pressure value when automatically converted to 20°C remains unchanged. On the contrary, when the ambient temperature decreases, the indicator value of the pointer also remains unchanged at the original density or pressure value.

5. When the circuit breaker due to some reasons, such as gas leakage or taking gas during the test, reduces the quality of SF6 gas and the pressure decreases, and the pressure change caused by the ambient temperature is compensated by the double metal belt and drives the pointer to move in the direction where the indicated value decreases. As a result, the density or pressure value indicated by the pointer becomes smaller. Since the density meter has two pairs of electrical contacts, it is used to signal and lock the circuit breaker when the SF6 gas density decreases. When the pointer drops to a certain position, it sends a gas supplement signal or locks the circuit breaker.

Lanso,as one of gas pressure gauge manufacturers, focus ourselves on high performance SF6 gauges, also called SF6 monitor. Click to view more!

Lanso Instruments Inc. Provides tools used to measure pressure, pressure gauge, sf6 gas pressure gauge, water pressure manometer, sf6 pressure, gas density pressure, sf6 measurement and etc. For more information, please feel free to contact us!

Lanso Pressure Measurement Instrument(2023年)

lansoinstruments — 2023-04-14T12:44:16+0900

https://www.lansoinstruments.com/products/

Lanso Pressure Measurement Instrument
Our current line of an instrument used to measure pressure features Gas Density Monitor Series, Pressure Gauges and Meters, Differential Gauges, Diaphragms and Valves, Online Monitoring Systems, Filling Fluids and Accessories. Primary clients industries include electrical power systems, biotechnology & pharmaceuticals, food & beverages, oil & gas and petrochemical industries.

Different Types Pressure Measuring Instruments

SF6 Gas Density Monitor Lanso is committed to offering SF6 Gas Density Monitor, which includes density relay, density meter, density switch, density transmitter, valves and instruments.
Density Relay
Density Meter
Density Switch
Density Transmitter
Gas Monitoring System
Valves

Pressure Measurement Gauge The pressure measuring series include different types of mechanical pressure gauges, differential pressure gauges, digital pressure gauges and pressure transmitters, suitable for all working environments.
Mechanical Pressure Gauge
Pressure Transmitter

Lanso Instruments Inc. Provides tool to measure gas pressure, pressure gauge, gas density monitor, water pressure manometer, pressure transducer with digital display and etc. For more information, please feel free to contact us!

SF6 Gas Measurement Valves(2023年)

lansoinstruments — 2023-04-14T12:43:15+0900

https://www.lansoinstruments.com/products/valves/

SF6 Gas Measurement Valves
Our valve is a SF6 density relay connection with SF6 gas chamber, after complete assembly can make the power maintenance personnel don't remove this device, you can to check or replace SF6 gas density relay, thoroughly solved the relay check, change and remove the problem of tonifying qi, avoided due to periodically remove the joint in the process of checking result in the damage to the switch seal face and sealing ring, greatly reduces the leakage probability, improve work efficiency, ensure the safety of SF6 electrical switch operation.

Lanso is one of a professional valves manufacturer and manufactures better products, like density valve, in the market depending on advanced equipment.

FMZ Series Connection Valve
This product is a device to connect SF6 gas density monitor with SF6 gas chamber. After the completion of the assembly, the electrical maintenance personnel can make SF6 gas density monitor calibration or replacement without disassembling the unit, solving the disassembling difficulty in monitor check, replacement and gas supplementation, avoiding the damage to switch sealing surface and sealing joints caused by disassembling joints in periodic verification process, greatly reducing the chance of leakage, improving work efficiency and ensuring the safe operation of SF6 electrical switches.

CV Self-Sealing Valve
This product is a device connecting SF6 gas density meter or density monitor and SF6 gas chamber; after the completion of the assembly, SF6 gas chamber can be effectively sealed. It can be applied to high and medium voltage equipment.

For more information about apparatus to measure pressure, please feel free to contact us!

Vacuum Pressure Gauge(2023年)

lansoinstruments — 2023-04-14T12:42:41+0900

https://www.lansoinstruments.com/products/vacuum-pressure-gauge/

Vacuum Pressure Gauge
The compound pressure gauge is used to measure the pressure that is less than atmos. It is widely used in gas transportation, pipeline liquid and closed container to measure the pressure of the various liquid, gas, steam and other media.

Vacuum measurement instrument List

B32.ST Stainless Steel Pressure Gauge
Best for measuring pressure of corrosive fluids (liquids & gas) in industrial processes.

B32.SA Stainless Steel Pressure Gauge – Safety Design
For measuring pressure of fluids (liquids & gas) in industrial processes with complex and hazardous environments. With safety partition plate built into the pressure-releasing enclosure back, the internal stress from overloading pressure elements are released, enhancing operation safety to users and equipment.

B32.ST+C Stainless Steel Pressure Gauge – Electrical Contacts
Best for measuring pressure of corrosive fluids (liquids & gas) in industrial processes, where there are no risks of electrical fires and similar hazards. The gauge is implemented with electrical relays or contactors to enable automated remote surveillance and control.

B36.SA Phenol Casing Pressure Gauge
For measuring pressure of fluids (liquids & gas) in industrial processes with complex and hazardous environments. With safety partition plate built into the pressure-releasing enclosure back, the internal stress from overloading pressure elements are released, enhancing operation safety to users and equipment.

Lanso Instruments Inc. Provides equipment used to measure pressure, pressure gauge, equipment used to measure pressure, compound pressure gauge range, compound vacuum pressure gauge and etc. For more information, please feel free to contact us!

SF6 Gas Leakage Monitoring System - Quantitative Alarm(2023年)

lansoinstruments — 2023-04-14T12:40:38+0900

https://www.lansoinstruments.com/products/sf6-gas-leakage-monitoring-system-quantitative-alarm.html

The SF6 gas leakage quantitative alarm system is based on the current situation in which the power system emphasizes safe production, and is an intelligent online detection system designed and developed to provide personal health and safety protection for the personnel in the power distribution device room where SF6 equipment is installed. The system mainly detects the SF6 gas content and oxygen content in the ambient air. When the SF6 gas content in the environment exceeds the standard or lacks oxygen, it can alarm in real time. At the same time, the ventilation system is automatically turned on, with temperature and humidity detection, working status voice prompts, remote alarm, Historical data query and many other rich features.

Feature of SF6 Monitoring System - Quantitative Alarm

The use of advanced high-sensitivity imported sensors, long life, with false alarm filtering software, to avoid false alarms.

The micro-monitoring technology can send out early on-site warnings and indicate the locations of gas leaks, promptly notify personnel in hazardous locations to evacuate, find and eliminate sources of leakage, and protect operating equipment.

A cable connects the SF6/O2 transmitter, infrared, main unit, and fan controller, and can be discretely combined to achieve high field adaptability.

Multi-point monitoring at the same time meets the requirements of the site environment and improves monitoring reliability.

The data can be transmitted far to the tele control center via the RS485 or RS232 bus. The control center can also directly inquire and control the monitoring system.

The well-designed high-frequency, low-current, high-voltage switching power supply is applied to the SF6 sensor monitoring head, which is characterized by safety, reliability, and high efficiency. Take full advantage of the flexibility of the microcontroller.

85V ~ 265V AC, to meet the different field environment needs.

Large-screen LCD color display, beautiful and generous, running status at a glance. Simple operation interface

The large-capacity memory supported by the system host can store historical data for more than one year. The excellent performance of the query system software ensures that the system can quickly query historical data in seconds.

Technical Data of SF6 Gas Leakage Monitoring System - Quantitative Alarm

SF6 gas concentration alarm range:50 ~ 2000PPM (alarm point can be set up, the state regulations 1000PPM)
SF6 gas detection sensitivity:±5% setting point
Oxygen concentration alarm point:18%
Oxygen measurement accuracy:<0.4%
Temperature display range:-50～99°C
Humidity display range:0 to 99% RH
Input power:85～265V AC
Alarm output point power supply:2A
Fan output contact power supply:16A
Fan ventilation time setting:15MIN/time or user set arbitrarily
Data recording capacity:10000
Communication:RS-485 standard protocol

SF6 quantitative leak monitoring alarm system host

Accessories: SF6/O2 double gas transmitter (on-demand), One fan controller, One warning light, and cable (several).

Lanso Instruments Inc. Provides device used to measure pressure of gas, pressure gauge, pressure measurement devices and etc. For more information, please feel free to contact us!

What Are the Types of Pressure Gauges?(2021年12月14日)

lansoinstruments — 2021-12-14T15:48:14+0900

https://www.lansoinstruments.com/
https://www.lansoinstruments.com/products/

Lanso Instruments Inc. is a Canada-based industrial products manufacturer & supplier specializing in types of pressure instruments. The company's extensive product portfolio and dedication to high-quality pressure measuring equipment products have earned us high brand recognition and established long-term partnerships with multinational corporations including ABB, HYOSUNG, TOSHIBA, SCHNEIDER, SIEMENS, and so on.

Here are the different types of pressure gauges:

1. Liquid column pressure gauge
The liquid column pressure gauge is based on the principle of statics, which converts the measured pressure into the height of the liquid column for pressure measurement. Such instruments include U-tube pressure gauges, single-tube pressure gauges, and inclined tube pressure gauges. Commonly used pressure measuring and indicating liquids are alcohol, water, carbon tetrachloride and mercury. The advantages of this type of pressure gauge are simple structure, sensitive response and accurate measurement; the disadvantage is that it is limited by the density of the liquid, and the pressure measurement range is narrow. When the pressure fluctuates sharply, the liquid column is not easy to stabilize, and there are strict requirements on the installation position and posture. Generally, it is only used to measure low pressure and vacuum degree, and mostly used in the laboratory.

2. Elastic pressure gauge
As a kind of apparatus to measure pressure, the elastic pressure gauge measures the pressure by converting the measured pressure into the displacement of the element according to the principle of deformation of the elastic element. Common ones are spring tube pressure gauge, bellows pressure gauge, diaphragm (diaphragm) pressure gauge. This type of pressure gauge is simple in structure, durable, cheap, reliable in operation, and has a wide measuring range. It is suitable for low-pressure, medium-pressure, and high-pressure production occasions. It is the most widely used pressure measuring instrument in the industry. However, the measurement accuracy of elastic pressure gauges is not very high, and most of them use mechanical pointer output, which is mainly used for on-site instructions at the production site. When remote signal transmission is required, additional devices must be installed.

3. Pressure sensor and pressure transmitter
Pressure sensors and pressure transmitters use certain physical characteristics of objects to convert the measured pressure into various electrical signals through different conversion elements, and indirectly measure pressure according to the changes in these signals. According to the different conversion components, pressure sensors and pressure transmitters can be divided into resistive, capacitive, strain-type, inductive, piezoelectric, and Hall plates.

Application Range of Different Types of Pressure Gauges(2021年12月14日)

lansoinstruments — 2021-12-14T15:47:35+0900

https://www.lansoinstruments.com/products/pressure-measurement/

In the production field, pressure gauges are often used for pressure measurement. In different working occasions, the use requirements and performance requirements for pressure gauges are different, so it is necessary to understand the applicable range of different types of pressure gauges. Among them, ordinary pressure gauges can be used to measure the pressure of liquid, gas or steam that is non-explosive, non-crystalline, non-solidified, and non-corrosive to copper and copper alloys. Operating temperature: -40℃～+70℃.

The shock-resistant pressure gauge with a certain degree of shock resistance can be used in places with severe vibration in some working environments, and can withstand the pulsation, impact and sudden unloading of the medium, and the indicator is clear and stable. It is widely used in machinery, petroleum, chemical, metallurgy, mining, electric power and other departments to measure the pressure of non-corrosive media on copper and copper alloys. It has a long service life and is a substitute for ordinary pressure instruments.

All stainless steel pressure gauges are all made of stainless steel, which can be used in working environments with corrosive gases, can detect the pressure of more corrosive media, and are widely used in petroleum, chemical, metallurgical and other industries.

The shock-resistant stainless steel pressure gauge meter is also all made of stainless steel, which can not only be used in corrosive gas environments, but also can detect the pressure of more corrosive media, and is widely used in petroleum, chemical, metallurgical and other industries. Moreover, it can adapt to severe vibration environment, endure pulsating pressure and impact load, and has a wider range of uses. The operating temperature range of this instrument is -25℃~+70℃.

In addition to these commonly used pressure gauges, there is another instrument that is also widely used today, that is, the diaphragm pressure gauge. This type of instrument adopts an indirect measurement structure, which is suitable for measuring the pressure of liquids, gases or solid media containing granular particles with high viscosity, easy crystallization, high corrosion, and high temperature.

Methods of Eliminating Sparks at the Contacts of SF6 Density Relay(2021年12月14日)

lansoinstruments — 2021-12-14T15:47:04+0900

https://www.lansoinstruments.com/products/density-monitor/

Because the current at the contacts of SF6 density relay is small, there will be no arc between the contacts. The sparks at the contacts are due to the inductance in the contact circuit. When the contacts are disconnected, there will be overvoltage on the inductance. The overvoltage and the power supply voltage are on the contact gap and discharge through the gap that is just separated. Due to the limitation of energy, spark discharge is the only phenomenon. The replacement and transformation of the energy in the capacitance and inductance existing between the contacts makes the spark discharge flicker and become a high-frequency signal.

Furthermore, spark discharge will also cause damage to the contacts and reduce the service life, so it is necessary to eliminate it.

There are two effective spark suppression circuits:
1. Its working principle is to make the energy in the inductor pass through RC (Resistance Capacitance) instead of the contacts.

2. The second working principle is that the energy is consumed on the load when passing through the diode when the contacts are disconnected.

You can choose one method in practice. Please pay attention to choosing the RC with proper parameters which are mainly determined by experiments. Generally, RC can be selected according to the load current 1a/1 microfarad. When using diodes, the positive and negative electrodes should be connected correctly.

If a load of contacts can't meet the application demand, it can be handled by several pairs of contacts in parallel. Adjust the contacts before use to make the synchronization meet the demand. The best way is to choose a central SF6 relay or contactor to expand the load of the contacts.

Installation Procedure of Pressure Gauges(2021年12月14日)

lansoinstruments — 2021-12-14T15:46:34+0900

https://www.lansoinstruments.com/
https://www.lansoinstruments.com/products/

The measuring system is essential for pressure gauging. Correct selection and verification (calibration) of the pressure gauge are very important for accurate measurement. Besides, correct installation of the whole system is also essential. If only the pressure gauge is accurate, its results cannot completely represent the actual parameters of the measured medium, because the error of the measuring system is not equal to the error of the pressure gauge. The correct installation of the pressure gauge system includes the position of the pressure tap, the reasonable laying of the connecting pipe and the correct installation position of the pressure gauge.

1. Selection of the position of the pressure tap
(1) Avoid areas, where pipes are bent, bifurcated and flow streams, form vortices.

(2) When there are protruding objects (such as temperature measuring elements) in the pipeline, the pressure tap should be installed in front of them.

(3) When the pressure tap is required to be near the regulating valve, the distance between the pressure tap and the regulating valve should not be less than 2 times the pipe diameter if the pressure tap is in front. If the pressure tap is behind it, the distance should not be less than 3 times the pipe diameter.

(4) For a wide container, the pressure tap should be installed in an area where the fluid flows smoothly with no vortex. In short, the position of the pressure tap should be able to ensure the required process parameters.

2. Laying of connecting conduits
The horizontal section of the connecting conduit should have a certain slope to eliminate condensed liquid or gas.

(1) When the medium to be measured is gas, the conduit should be inclined towards the pressure tap.

(2) When the medium is liquid, the conduit should be inclined towards the pressure measurement tool.

(3) When the measured parameter is a small number of differential pressure, the inclination can be slightly larger.

The different types pressure measuring instruments should be installed perpendicularly to the horizontal plane. It should face a proper direction for the convenience of operation and observation. The end of the pressure source component should not exceed the inner wall of the equipment or pipeline. On the same pipeline, the pressure gauge should be in front and the temperature gauge should be in the back. The distance between them should be greater than or equal to 200mm.

How do We Select Suitable Pressure Gauges?(2021年12月14日)

lansoinstruments — 2021-12-14T15:46:00+0900

https://www.lansoinstruments.com/products/pressure-measurement/
https://www.lansoinstruments.com/products/mechanical-pressure-gauges/

Lanso Instruments INC. has adopted a globalized strategy to provide different types of pressure gauges to clients all over the world. With global procurements Lanso Instruments makes sure our pressure measurement device products would meet the highest industrial quality standard, while satisfying the individual needs of our customers.

When selecting a pressure gauge, you need to consider the type, range, accuracy, sensitivity, dimension, remote transmission function and other functions such as indication, recording, adjustment and alarm.

LASON, a top pressure gauges supplier from china, will give you the detailed selection guides for you!

Main basis for pressure gauge selection:
1. Requirements for measurement in process production, including measuring range and accuracy
In the case of static test (or slow change), the maximum of the measured pressure is specified to be two-thirds of the full scale of the pressure gauge. In case of pulsating (fluctuating) pressure, the maximum of the measured pressure should be one half of the full scale of the pressure gauge.

The accuracy grades of commonly used pressure gauges are 0.05, 0.1, 0.25, 0.4, 1.0, 1.5 and 2.5. You should choose from the accuracy requirements for production process and the best economy. The maximum allowable error of the pressure gauge is the product of the range of the pressure gauge and the percentage of accuracy grade. If the error exceeds the accuracy required by the process, replace the pressure gauge with better accuracy.

2. The properties of the measured medium
When choosing a pressure gauge, you need to consider the properties of the measured medium, such as the state (gas, liquid), temperature, viscosity, corrosiveness, degree of oil contamination, flammability and explosiveness, etc. Oxygen meter, acetylene meter, etc. are not suitable for oily environments. Corrosion resistant pressure gauge, high temperature resistant pressure gauge, diaphragm pressure gauge, etc. are suitable for special medium.

3. Environmental conditions during use
Consider the temperature, corrosion, vibration, humidity, etc. For example, shockproof pressure gauges are suitable for vibration environments.

4. Staff observation
Choose different types of mechanical pressure gauges with different gauge diameters (outer dimensions) according to the locations of the pressure gauges and the lighting conditions of the locations.

How does the Density Transmitter Work?(2021年12月14日)

lansoinstruments — 2021-12-14T15:45:12+0900

https://www.lansoinstruments.com/products/density-transmitter/

Density transmitter is a device that continuously measures density online. It can be directly used in industrial production processes. According to Archimedes principle, it adopts electronic technology, which consists of a capacitive differential pressure sensor and its connection, a pair of pressure sensitive diaphragms with a temperature sensor between them. It can offset the temperature change of the process liquid.

The density transmitter has high long-term stability without the need of zero set and maintenance. The wetted parts are all made of stainless steel (standard). The airtight welded measuring element can maintain good airtightness for a long time. The measuring element adopts a special structure design without any internal seals and the risk of leakage. Because of that, the density transmitter is not affected by atmospheric pressure fluctuations and installation heights.

Precautions for the Use of Density Relays(2021年12月14日)

lansoinstruments — 2021-12-14T15:44:30+0900

https://www.lansoinstruments.com/oil-gas-using-meaturing-instrument.html
https://www.lansoinstruments.com/products/density-monitor/

Density relay is an important protection and control element in the power system. If the circuit breaker gets out of order, it will cause great economic losses. To ensure the reliability of the circuit breaker operation, it is necessary to frequently monitor the indicators of the circuit breaker.

The precautions for the use of density relays are as follows:
1. The density relay can only accurately measure the density when the circuit breaker is out of operation and after the internal and external temperatures of the circuit breaker reach equilibrium. If the circuit breaker leaks gas when the circuit breaker is in operation, it will leak more gas than that when the circuit breaker is out of operation due to the effect of temperature rise. Only in this way can the electrical contacts of the density relay be closed.

2.The calibration of density relay is to use a device used to measure gas pressure and the density under various temperatures and pressures. Then compare it with the various pressures simulated by the instrument to observe whether the electrical contact can signal within the specified range of low pressure or lock the circuit breaker, so as to judge the status of the density relay.

3.During the calibration of density relays, it was found that the density relays of several circuit breakers were unqualified, but the unqualified density meters were not found. The standard gas package has a long, thin copper pipe. The unqualified density relay may be caused by the increase of pressure in the standard gas package due to bending or collision of copper pipe during installation or maintenance. It is also possible that the corrugated tube of the density relay is damaged, causing the standard gas package to leak. When the circuit breaker leaks gas, the contacts of C1-L1 and C2-L2 can't be connected, making density relay lose its function, which seriously threatens the safe operation of equipment and even the safety of the system.

Measurement Accuracy of Various Pressure Gauges(2021年)

lansoinstruments — 2021-06-29T15:36:11+0900

https://www.lansoinstruments.com/products/diaphragm-pressure-gauge/
https://www.lansoinstruments.com/products/pressure-measurement/

Lanso Instruments Inc. is a Canada-based industrial products manufacturer & supplier specializing in devices to measure pressure. The company's extensive product portfolio and dedication to high-quality products ,such as pressure measurement device,gas density monitor,gas density switch,gas density transmitter,pressure gauge and so on,have earned us high brand recognition and established long-term partnerships with multinational corporations including ABB, HYOSUNG, TOSHIBA, SCHNEIDER, SIEMENS, and so on.

The pressure gauge uses the elastic deformation of the sensitive elements (Bourdon tube, Capsule, Bellows) in the watch, and the pressure deformation is transmitted to the pointer by the conversion mechanism of the movement in the watch, causing the pointer rotation to display the pressure.

Capsule pressure gauge: The sensitive element of the capsule is composed of two connected diaphragms with circular waves. The structure of the capsule pressure gauge is mainly composed of capsule, transmission mechanism, adjustment mechanism, pointer, dial and so on.

There are two kinds of diaphragm type pressure gauge: diaphragm pressure gauge and capsule pressure gauge. The former is mainly used to measure the pressure of corrosive media or non-solidified and non-crystalline viscous media; the latter is often used to measure gas micro pressure and negative pressure, and it is suitable for measuring micro pressure and vacuum. The measuring range is generally -2000～4000Pa, and the accuracy grade is generally 2.5.

Pressure gauge types classification
Pressure gauges can be divided into precision pressure gauges and general pressure gauges according to their measurement accuracy.

The measurement accuracy grades of precision pressure gauge are 0.1, 0.16, 0.25, and 0.4 respectively;

The measurement accuracy grades of general pressure gauges are 1.0, 1.6, 2.5, and 4.0 respectively;

Measuring range: pressure vacuum gauge, micro pressure gauge, low pressure gauge, medium pressure gauge and high pressure gauge;

Applicable conditions: shock-resistant, heat-resistant, corrosion-resistant, and safe;

According to the interface position: divided into radial and axial;

The position of the threaded interface of the pressure gauge is radial under the dial and axially perpendicular to the dial.

Special pressure gauge types

The oxygen pressure gauge and the ordinary pressure gauge can be exactly the same in terms of structure and material, but the oxygen pressure gauge must be oil-free, because oil enters the oxygen system and can easily cause an explosion.

Electric contact pressure gauge: The upper and lower limit contact mechanism is installed, and an alarm signal is issued when the pressure deviates from a given range.

Application of Electric Heating Method in SF6 Density Monitor(2021年)

lansoinstruments — 2021-06-29T15:35:46+0900

https://www.lansoinstruments.com/products/sf6-gas-density-monitor/

Lanso Instruments Inc. is a Canada-based industrial products manufacturer & supplier specializing in tool used to measure pressure. The company's extensive product portfolio and dedication to high-quality products ,such as pressure measurement device,gas density monitor,gas density switch,gas density transmitter,pressure gauge and so on,have earned us high brand recognition and established long-term partnerships with multinational corporations including ABB, HYOSUNG, TOSHIBA, SCHNEIDER, SIEMENS, and so on.

Due to the partial liquefaction of SF6 gas at ultra-low temperature, the SF6 gas density in the SF6 gas density monitoring equipment decreases, which reduces the breaking capacity and insulation level of SF6 switchgear, and cannot guarantee the reliable operation of SF6 switchgear. For this reason, this paper proposes a solution to heat the SF6 gas in the SF6 switchgear with an electric heating device, so that the temperature of the SF6 gas can always be higher than the liquefaction temperature of the SF6 gas.

The electric heating device is used to heat the SF6 gas in the SF6 pressure gauge, which can effectively solve the problem of low-temperature liquefaction of SF6 gas at ultra-low temperature. The technical key of the electric heating design scheme is: the SF6 gas electric heating device is added to the SF6 switchgear. When the ambient temperature drops to a certain value (such as: -25℃), the heater can be automatically put into operation. The internal arc extinguishing and insulating medium are heated; no matter how low the ambient temperature is (for example: -50°C), the gas temperature in the SF6 switchgear is always higher than the temperature required for SF6 gas liquefaction, which solves the problem of SF6 low-temperature gas liquefaction in severe cold areas.

In the electric heating design scheme of SF6 switchgear, the heat transfer method of the heating device includes heat conduction, heat radiation and heat convection. For the different structural forms of SF6 switchgear, the electric heating method adopted is also slightly different. Commonly used design structures are:
① The heating method of winding an electric heating tape on the outer wall of the equipment tank;
② Insert the heater into the inside of the SF6 gas chamber and heat it directly.

In order to solve the problem of reliable operation of high-voltage SF6 circuit breakers at ultra-low temperatures, electric heating devices can be used to heat SF6 gas in SF6 density monitor. SF6/N2 mixed gas can also be used as the arc extinguishing and insulating medium of switchgear. In addition, it is also possible to reduce the rated pressure of the SF6 gas in the SF6 density monitor to reduce the SF6 gas liquefaction point. However, no matter which method is adopted, there are advantages and disadvantages.

The method of reducing the pressure of SF6 gas or using SF6/N2 mixed gas will cause the breaking performance of the equipment to decrease, which often cannot meet the requirements of the short-circuit breaking capacity of the equipment in the bidding document. At the same time, relevant type tests are required according to the standard GB1984. The test period is long and the cost is high. The electric heating method requires changes to the existing structure of the equipment and increases the cost of materials.

It is believed that electric heating is the most economical and effective solution through comprehensive analysis. In addition, it is also important to pay attention to the design of low-temperature products: choose low-temperature-resistant seals, low-temperature-resistant grease. And heat in the operating mechanism box to ensure that the opening and closing characteristics remain unchanged and can span a large temperature range of porcelain sleeve used etc.

Understand the Pressure Gauge in Terms of Application, Installation Structure and Range(2021年)

lansoinstruments — 2021-06-29T15:35:23+0900

https://www.lansoinstruments.com/products/mechanical-pressure-gauges/

Lanso Instruments Inc. is a Canada-based industrial products manufacturer & supplier specializing in pressure measuring equipment. The company's extensive product portfolio and dedication to high-quality products ,such as pressure measurement device,gas density monitor,gas density switch,gas density transmitter,pressure gauge and so on,have earned us high brand recognition and established long-term partnerships with multinational corporations including ABB, HYOSUNG, TOSHIBA, SCHNEIDER, SIEMENS, and so on.

1. In terms of application of pressure gauges

Pressure gauge meter can be seen everywhere in areas such as heating power pipe networks, oil and gas transmission, water and gas supply systems, and vehicle repair and maintenance factories. Especially in industrial process control and measurement, because the elastic sensitive elements of mechanical pressure gauges have high mechanical strength and convenient production characteristics, mechanical gauges for pressure measurement have become more and more widely used.

2. In terms of installation structure of pressure gauges

From the perspective of the installation structure, there are direct installation, embedded installation and convex installation. The embedded installation is divided into radial embedded installation and axial embedded installation. The convex installation also has radial convex installation and axial installation. Direct installation is divided into radial direct installation and axial direct installation. The radial direct installation type is the basic installation type. Generally, when the installation structure type is not specified, it refers to the radial direct installation type. The axial direct mounting type considers the stability of its own support and is generally only used on pressure gauges with a nominal diameter of less than 150mm. The so-called built-in and convex-mounted pressure gauge meter are the pressure gauges with edge (mounting ring) we often say. Axial embedded type refers to the axial front with edge, radial embedded type refers to the radial front edge, and radial convex type (also called wall mount) refers to the radial rear edge pressure gauge.

1. In terms of range of pressure gauges

From the perspective of measurement domain and range section, the positive pressure measurement domain is divided into micro pressure range section, low pressure range section, medium pressure range section, high pressure range section, and ultra-high pressure range section. Several measurement ranges (instrument ranges) are subdivided; the pressure gauge of positive pressure and negative pressure is a cross-range pressure gauge meter. Its standard name is pressure vacuum gauge. It can not only measure positive pressure, but also can measure negative pressure.

How to Choose a Pressure Gauge when Measuring Low Pressure, Micro Pressure or Negative Pressure Media?(2021年)

lansoinstruments — 2021-06-29T15:34:52+0900

https://www.lansoinstruments.com/

Lanso Instruments Inc. is a Canada-based industrial products manufacturer & supplier specializing in pressure measuring apparatus. The company's extensive product portfolio and dedication to high-quality products ,such as pressure measurement device,gas density monitor,gas density switch,gas density transmitter,pressure gauge and so on,have earned us high brand recognition and established long-term partnerships with multinational corporations including ABB, HYOSUNG, TOSHIBA, SCHNEIDER, SIEMENS, and so on.

In many projects, the objects that need to be measured are small pressures and negative pressures, such as measuring flue pressure, air duct pressure, pressure difference between the two ends of the filter. How should we choose a suitable pressure gauge meter? In this case, bellows pressure gauge meter, vacuum pressure gauge meter or U-tube pressure gauge meter, single tube pressure gauge meter and inclined tube pressure gauge meter are usually selected.

The elastic element of the bellows pressure gauge meter is a bellows. The general bellows is composed of two circular diaphragms with corrugations welded together, one fixed and one free. When the pressure of the measuring medium acts on the inner cavity of the bellows through the joint, the deformation of the free end bellows is transmitted to the pulling rod, which drives the gear mechanism to rotate, and then drives the pointer to display the measured medium pressure. The material of the bellows is generally copper alloy and 316 stainless steel. Because of its large force area and large output thrust, it is suitable for low pressure and negative pressure measurement tool. For example, the measurement range is 0~10 kPa, -20~20 kPa. It cannot be used for measurement of high-pressure media.

Test Method of SF6 Relay in Low Temperature and Extreme Environment(2021年)

lansoinstruments — 2021-06-29T15:34:15+0900

https://www.lansoinstruments.com/products/density-transmitter/
https://www.lansoinstruments.com/products/density-monitor/

Before the test, the high and low temperature control box can be used to control the temperature between -40°C and +60°C, and then perform accurate inspection work. In order to connect the data, it is necessary to combine the control box and the platform to effectively adjust the pressure and temperature of the air source between them. The calibration software will automatically read and store the test value according to the temperature, including contact action value and contact return value. Since there is a certain curve relationship between the pressure value and the temperature, the change of the relationship between the two can be used to judge whether the relay action value is qualified. The technical characteristics of the calibration equipment include the following three aspects: First, the equipment has an SF6 gas charging system, which can help SF6 relay test samples to replenish gas conveniently and quickly; second, the equipment has two sensors at the same time, which are relative pressures sensors and absolute pressure sensors. Since there are many types of SF6 density relays, the function of these two sensors is to measure the value of different types of relays. SF6 gas density transmitter is suitable for different kinds of working environments.

The following issues should be paid attention to during the debugging process:

1. Ensure the accuracy of the pressure value reading

In the process of testing, it is found that the value on the SF6 relay does not match the pressure value collected by the system, and there is a considerable error. The reasons for this problem are:

Firstly, because the thickness of the pipeline is prone to large changes, so the pressure transmission is relatively unstable, which makes the instantaneous pressure unbalanced;

Secondly, if in a low-temperature environment, the pressure indication values of the density relays at the near and far ends of the air supply port do not match, and the near end is greater than the far end, it means that the distance between the installation position of the 4 density relays and the air supply port is not equal;

Thirdly, because the position of the density relay is far away from the position of the pressure sensor, the phenomenon of not reading the value in time will occur.

For these three problems, specific improvements can be made to the pipeline, such as: replacing the mounting frame of the density relay, adjusting the position so that the distance between the relay position and the air supply port position is equal; adjusting the pressure sensor installation position, and changing it to the relay near the proximal end of the sensor to improve the timeliness and accuracy of pressure reading.

2. Ensure the accuracy of the temperature value reading

Adjust the temperature in the high and low thermostat control box to -40℃, and then put the density relay in it for two hours before testing. During the inspection, it was found that the temperature value read by the system after adjustment was -33°C instead of -40°C. The reason for this phenomenon is that SF6 gas will liquefy as the pressure rises, and then release a certain amount. The heat makes the test temperature near the gas path higher than the adjusted temperature. In order to make the actual ambient temperature reach -40°C, the position of the temperature sensor should be adjusted to keep it away from the gas path.

3. SF6 relay calibrator, calibration station

Density relay calibrator is also called SF6 relay calibrator, sulfur hexafluoride density relay calibrator, which is mainly used for the calibration of pressure and action indicators of density relays. It has the advantages of less gas consumption, fast test speed, and high test accuracy. It is widely used in substations, power plants, and major power maintenance departments

What Is the Function of SF6 Relay Calibrator?(2021年)

lansoinstruments — 2021-06-29T15:33:47+0900

https://www.lansoinstruments.com/products/density-monitor/
https://www.lansoinstruments.com/products/density-meter/

When we are in contact with the SF6 relay calibrator, we may want to know what it does, and what power equipment is it used to test? This article will give you a detailed introduction:

Before the introduction, let's first understand the SF6 switch. SF6 switch is a high-voltage electrical appliance widely used in power systems at present, and its reliable and stable operation is one of the most concerned issues of the power supply department. As a result, our SF6 density relay calibrator began to play its role.

The function of the SF6 relay
The main function of the SF6 relay is to monitor the change of the SF6 gas density in the SF6 switch body during operation, so as to provide judgment on whether the SF6 switch is safe or not. The experimenters mainly use the SF6 gas density value data displayed by the SF6 gas density relay. To determine the safety of SF6 switch. It can be seen that the performance of SF6 relay directly affects the safety of SF6 switch operation.

It is understood that due to infrequent actions, SF6 relays operating on-site will often experience inflexible actions and poor contact contact after a period of time, and some will have poor compensation performance. When the ambient temperature changes suddenly, it is easy to cause the SF6 relay to malfunction. Therefore, the "Procedures for Preventive Tests of Power Equipment" stipulated this: Units using SF6 gas density meter should periodically verify SF6 relays. From the perspective of safe use of electrical equipment, it is very necessary to check high-voltage electrical appliances regularly.

SF6 density relay calibrator is an intelligent calibration instrument
It is precisely because the calibrator uses a high-precision pressure sensor and a high-speed A/D converter, combined with a 32-bit high-performance microprocessor, it can verify the performance of various SF6 density relays, and can accurately measure SF6 during experiments. The pressure value at the current temperature when the switch signal is activated makes the test more accurate and more stable. And because of the intelligent processing of the electronic digitization of the instrument, the instrument can automatically convert any ambient temperature to the standard pressure at 20°C. This tester is a very practical and reliable ideal choice for power supply departments! In addition, the instrument also has the functions of printing, storing and transferring to a USB flash drive, while automatically identifying faults during the test. It has greatly improved the work efficiency and reduced potential the safety hazards for electric power workers in the power supply department, and also reflected the intelligent characteristics of the instrument.

Types of Pressure Measuring Instrument(2021年)

lansoinstruments — 2021-06-29T15:33:22+0900

https://www.lansoinstruments.com/
https://www.lansoinstruments.com/products/pressure-measurement/

The types of pressure measuring instruments are divided into liquid column type, elastic type and electric measuring type according to the working principle. The pressure gauge can indicate and record the pressure value, and can be equipped with an alarm or control device. The pressure measured by the instrument includes absolute pressure, atmospheric pressure, positive pressure (usually called gauge pressure), negative pressure (usually called vacuum) and differential pressure. The measured engineering technology is mostly gauge pressure.
The international unit of pressure is Pa, and other units include: engineering atmospheric pressure, bar, millimeter water column, millimeter mercury column. Pressure is an important parameter in industrial production. For example, when the pressure of a high-pressure vessel exceeds the rated value, it is unsafe and must be measured and controlled. In some industrial production processes, pressure also directly affects product quality and production efficiency. For example, when producing synthetic ammonia, nitrogen and hydrogen not only need to be synthesized under a certain pressure, but the pressure directly affects the output.

The following is a brief introduction of different types of different pressure measuring devices.

1. U-shaped tube pressure gauge

2. Elastic pressure gauge

3. Hall pressure gauge

Type of Pressure Measurement(2021年)

lansoinstruments — 2021-06-29T15:32:52+0900

https://www.lansoinstruments.com/

1. Absolute pressure
The pressure with absolute vacuum as the zero reference.

2. Positive pressure

A pressure more than atmospheric pressure based on atmospheric pressure.

3. Negative pressure

The pressure less than atmospheric pressure based on atmospheric pressure.

4. Differential pressure
The difference between the two pressures.

5. Gauge pressure

Based on atmospheric pressure, a pressure more than or less than atmospheric pressure.

LASON, provides various pressure measuring devices for different needs. The application includes the Oil & Gas, Petrochemicals, Power System, Firefighting, Food & Beverage, Biotech & Pharmaceuticals.

What Are the Types of Pressure Gauges?(2021年)

lansoinstruments — 2021-04-28T18:57:04+0900

https://www.lansoinstruments.com/products/pressure-measurement/

Lanso Instruments Inc. is a Canada-based industrial products manufacturer & supplier specializing in tool to measure pressure. The company's extensive product portfolio and dedication to high-quality products ,such as pressure measurement device,gas density monitor,gas density switch,gas density transmitter,pressure gauge and so on,have earned us high brand recognition and established long-term partnerships with multinational corporations including ABB, HYOSUNG, TOSHIBA, SCHNEIDER, SIEMENS, and so on.

Here are the different types of pressure gauges:

1. Liquid column pressure gauge

2. Elastic pressure gauge

As a pressure instrument, the elastic pressure gauge measures the pressure by converting the measured pressure into the displacement of the element according to the principle of deformation of the elastic element. Common ones are spring tube pressure gauge, bellows pressure gauge, diaphragm (diaphragm) pressure gauge. This type of pressure gauge is simple in structure, durable, cheap, reliable in operation, and has a wide measuring range. It is suitable for low-pressure, medium-pressure, and high-pressure production occasions. It is the most widely used pressure measuring instrument in the industry. However, the measurement accuracy of elastic pressure gauges is not very high, and most of them use mechanical pointer output, which is mainly used for on-site instructions at the production site. When remote signal transmission is required, additional devices must be installed.

3. Pressure sensor and pressure transmitter

The biggest feature of this type of pressure measuring instrument is that the output signal is easy to transmit remotely, and can be conveniently used with various display, recording and adjustment instruments, thereby creating conditions for centralized pressure monitoring and control. It is widely used in the production process automation system.

Application Range of Different Types of Pressure Gauges(2021年)

lansoinstruments — 2021-04-28T18:56:33+0900

https://www.lansoinstruments.com/digital-pressure-gauges/

Methods of Eliminating Sparks at the Contacts of SF6 Density Relay(2021年)

lansoinstruments — 2021-04-28T18:55:55+0900

https://www.lansoinstruments.com/sf6-gas-density-relay-calibrator.pdf

Lanso Instruments Inc.,pressure gauge manufacturers, is a Canada-based industrial products manufacturer & supplier specializing in pressure measurement devices. The company's extensive product portfolio and dedication to high-quality products ,such as pressure measurement device,gas density monitor,gas density switch,gas density transmitter,pressure gauge and so on,have earned us high brand recognition and established long-term partnerships with multinational corporations including ABB, HYOSUNG, TOSHIBA, SCHNEIDER, SIEMENS, and so on.

Furthermore, spark discharge will also cause damage to the contacts and reduce the service life, so it is necessary to eliminate it.

There are two effective spark suppression circuits:
1. Its working principle is to make the energy in the inductor pass through RC (Resistance Capacitance) instead of the contacts.
2. The second working principle is that the energy is consumed on the load when passing through the diode when the contacts are disconnected.

If the load of contacts can't meet the application demand, it can be handled by several pairs of contacts in parallel. Adjust the contacts before use to make the synchronization meet the demand. The best way is to choose a central SF6 relay or contactor to expand the load of the contacts.

Installation Procedure of Pressure Gauges(2021年)

lansoinstruments — 2021-04-28T18:55:32+0900

https://www.lansoinstruments.com/products/pressure-measurement/

1. Selection of the position of the pressure tap
(1) Avoid areas where pipes are bent, bifurcated and flow streams form vortices.
(2) When there are protruding objects (such as temperature measuring elements) in the pipeline, the pressure tap should be installed in front of them.
(3) When the pressure tap is required to be near the regulating valve, the distance between the pressure tap and the regulating valve should not be less than 2 times the pipe diameter if the pressure tap is in front. If the pressure tap is behind it, the distance should not be less than 3 times the pipe diameter.
(4) For a wide container, the pressure tap should be installed in an area where the fluid flows smoothly with no vortex. In short, the position of the pressure tap should be able to ensure the required process parameters.

2. Laying of connecting conduits
The horizontal section of the connecting conduit should have a certain slope to eliminate condensed liquid or gas.
(1) When the medium to be measured is gas, the conduit should be inclined towards the pressure tap.
(2) When the medium is liquid, the conduit should be inclined towards the pressure gauge.
(3) When the measured parameter is a small number of differential pressure, the inclination can be slightly larger.