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technical article
Diaphragm pressure gauge for easy zero adjustment
2012-2-17 10:20:14

的结构特点: Structural features of diaphragm pressure gauge :
The instrument is composed of a measurement system (including flanges, corrugated diaphragms), a transmission indicating mechanism (including connecting rods, gear transmissions, pointers and index dials), and a casing (including watch cases and bezels). The instrument housing is a splash-proof structure with good sealing, 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 measurement system). Under the pressure of the measured medium, the diaphragm is forced to produce the corresponding elastic deformation-displacement. The transmission of the transmission mechanism is organized and amplified by the connecting rod. The pointer fixed on the gear will gradually measure the measured value on the index plate. Indicate


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: 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.

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; vertical installation of the instrument; working environment -25 ~ 55 ℃. Relative humidity is not more than 80%, and the surrounding environment does not contain harmful gases that corrode the instrument;

Diaphragm pressure gauge

It 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.

Structure principle The instrument consists of a measurement system (including flange joints, corrugated diaphragms), a transmission indicating mechanism (including connecting rods, gear transmission mechanisms, pointers and dials), and a casing (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 technical index 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: 1. Good overload performance; 2. Linear; 3. Suitable for measuring absolute pressure and differential pressure; 4. Small size and moderate price; 5. Can be used for viscous and slurry measurement. Disadvantages: 1. Poor seismic and impact resistance; 2. Difficult to maintain; 3. Low measuring pressure.

Diaphragm pressure gauges are suitable for measuring the pressure or negative pressure of various fluid media that are corrosive, non-solidified or non-crystalline.

The corrosion resistance depends on the diaphragm material.

结构原理: Diaphragm pressure gauge structure 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.