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How to choose the difference between diaphragm pressure gauge and diaphragm pressure gauge
2012-3-6 10:44:04


采用膜盒作为测量微小压力的敏感元件。 The capsule pressure gauge uses a capsule as a sensitive element for measuring small pressures. It is used to measure the micro-pressure and negative pressure of non-corrosive effects on copper alloys and non-explosive dangerous gases. It is widely used in boiler ventilation, gas pipelines, combustion devices and other similar equipment. The stainless steel capsule pressure gauge is made of stainless steel according to the pressure guiding system and the housing. It is used to measure the micro-pressure and negative pressure of various gaseous media in the process with high corrosion resistance. The stainless steel capsule pressure gauge is a micro-pressure gauge with corrosion resistance developed according to the structural characteristics of the original capsule pressure gauge. It is applied to equipment such as boiler ventilation and gas pipelines, and measures the micro pressure and negative pressure of various gas media in the process with high corrosion resistance requirements. Accuracy grade: 2.5 Structural principle: The meter consists of a measurement system (including joints, bellows, etc.), a transmission mechanism (including a lever mechanism, a gear transmission mechanism), an indicator component (including the pointer and dial), and an outer casing (including a watch case) , Backing ring and watch glass). The working principle of the meter is based on the corrugated membrane box under the pressure of the measured medium, the free end of the corresponding elastic deformation, and then transmitted by the gear transmission mechanism and amplified, the pointer fixed on the gear shaft will be measured one by one The value is indicated on the dial. There is also a zero-adjusting device, which can easily adjust the zero position. The measurement range of the capsule pressure gauge is -80 ~ 60000Pa, but different capsule pressure gauges should be selected according to different pressure ranges. It is recommended to use a disc diaphragm pressure gauge when the pressure is -1000Pa ~ 60000Pa. If the pressure is -80Pa It is recommended to use a rectangular capsule pressure gauge. The meter is composed of a measurement system (including joints, bellows boxes, etc.), transmission mechanism (including rod pull mechanism, gear transmission mechanism), indicating parts (including pointer and dial), and housing (including watch case, backing ring and watch glass). composition. The working principle of the meter is based on the corrugated membrane box under the pressure of the measured medium, the free end of the corresponding elastic deformation, and then transmitted by the gear transmission mechanism and amplified, the pointer fixed on the gear shaft will be measured one by one The value is indicated on the dial. There is also a zero-adjusting device, which can easily adjust the zero position. The measurement range of the capsule pressure gauge is -80 ~ 60000Pa, but different capsule pressure gauges should be selected according to different pressure ranges. It is recommended to use a disc diaphragm pressure gauge when the pressure is -1000Pa ~ 60000Pa. If the pressure is -80Pa It is recommended to use a rectangular capsule pressure gauge.
How do we select the diaphragm pressure gauge and the diaphragm pressure gauge? Let's talk about the differences between them:

Capsule pressure gauge
The capsule is used as a sensitive element for measuring small pressure. It is used to measure the micro-pressure and negative pressure of non-corrosive effects on copper alloys and non-explosive dangerous gases. It is widely used in boiler ventilation, gas pipelines, combustion devices and other similar equipment. The stainless steel capsule pressure gauge is made of stainless steel according to the pressure guiding system and the housing. It is used to measure the micro-pressure and negative pressure of various gaseous media in the process with high corrosion resistance. The production of stainless steel capsule pressure gauges is based on the structural features of the original capsule pressure gauges and is a micro-pressure gauge with corrosion resistance. It is applied to equipment such as boiler ventilation and gas pipelines, and measures the micro pressure and negative pressure of various gas media in the process with high corrosion resistance requirements. Accuracy level: 2.5
Measuring range: (kPa): 0 to 4; 0 to 6; 0 to 10; 0 to 16; 0 to 25; 0 to 40; 0 to 60; -4 to 0; -6 to 0; -10 to 0; -16 to 0; -25 to 0; -40 to 0; -2 to 2; -3 to 3; -5 to 5; -8 to 8; -12 to 12; -20 to 20 -30 to 30
Environmental conditions: -25 ~ 55 ℃, relative humidity is not more than 80%
Resistance to working environment vibration: V · H · 3 class Weight: 0.5kg
Structural principle:
The meter is composed of a measurement system (including joints, bellows boxes, etc.), transmission mechanism (including rod pull mechanism, gear transmission mechanism), indicating parts (including pointer and dial), and housing (including watch case, backing ring and watch glass). composition. The working principle of the meter is based on the corrugated membrane box under the pressure of the measured medium, the free end of the corresponding elastic deformation, and then transmitted by the gear transmission mechanism and amplified, the pointer fixed on the gear shaft will be measured one by one The value is indicated on the dial. There is also a zero-adjusting device, which can easily adjust the zero position. ,压力在-1000Pa~60000Pa时建议选用圆盘式膜盒压力表,如果压力在-80Pa时建议选用矩形膜盒压力表。 The measurement range of the capsule pressure gauge is -80 ~ 60000Pa, but different capsule pressure gauges should be selected according to different pressure ranges. It is recommended to use a disc diaphragm pressure gauge when the pressure is -1000Pa ~ 60000Pa. If the pressure is -80Pa It is recommended to use a rectangular capsule pressure gauge. Working position and environment: The instrument is installed vertically; the working environment is -25 ~ 55 ℃; the relative humidity is not more than 80%; and the surrounding environment does not contain harmful gases that corrode the instrument. Diaphragm pressure gauge is suitable for measuring the pressure or negative pressure of various corrosive, non-solidified or non-crystalline fluid media. The corrosion resistance depends on the diaphragm material.
Structural principle:
The instrument is composed of a measurement system (including flange joints, corrugated diaphragms), a transmission indicating mechanism (including a connecting rod, a gear transmission mechanism, a pointer and a dial), and a housing (including a watch case and a bezel). The meter housing is a splash-proof structure with good tightness, so it can protect its internal mechanism from contamination.
The working principle of the meter is based on the deformation of the elastic element (the diaphragm on the measuring system). Under the pressure of the measured medium, the diaphragm is forced to produce the corresponding elastic deformation-displacement. The link group is driven by the transmission mechanism and amplified. The pointer fixed on the gear will gradually measure the measured value on the dial. Indicate it.
Main Specifications:
Accuracy level: 2.5
Working environment temperature: -40 ~ + 70 ℃; relative humidity is not more than 90%
Temperature influence: When the use temperature deviates from 20 ± 5 ℃, its temperature additional error is not more than 0.04% / ℃
Working position: Vertical installation enclosure Protection level: IP64
Advantages and disadvantages: advantages: 1. good overload performance; 2. linearity; 3. suitable for measuring absolute pressure and differential pressure; 4. small size, moderate price; 5. can be used for viscous, slurry measurement. Disadvantages: 1. Poor seismic and impact resistance; 2. Difficult to maintain; 3. Low measuring pressure.