Differential Pressure Gauge

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The working principle of metal capacitance differential pressure gauge is that when the pressure acts indirectly on the surface of metal measuring diaphragm (elastic measuring element) of different thickness through isolating diaphragm and conductive medium. 

The working principle of metal capacitance differential pressure gauge is that when the pressure acts indirectly on the surface of metal measuring diaphragm (elastic measuring element) of different thickness through isolating diaphragm and conductive medium, the diaphragm produces small deformation, the maximum shape variable does not exceed 0.1mm, and the high precision measuring circuit converts this small deformation into a voltage signal which is linearly related to the differential pressure signal, which is linearized. Temperature compensation, and then use a special chip to convert the voltage signal into an industrial standard 4-20mA current signal or 1-5V voltage signal.  

Medium : liquid, gas, or steam

Measurement range : 0~7000Kpa (0~70kgf/cm2), 0~41Mpa (0~4100kgf/cm2)

Output signal : 4 ~ 20mA dc, superimposed HART, RS485

Power supply : 24V dc. , power range 12V ~ 45V

Accuracy : + 0.1%, + 0.075%

Stability : + 0.2% ≤ 12 months of the maximum range

Temperature range : 

electronic:-40 ~ 85 °C,sensitive element:-40 ~ 85 °C, storage temperature: -40 ~ 85 °C.

Temperature effect : + 0.2% ≤ 20 °C with zero and range temperature error of maximum range

Power effect : less than 0.005% / V of the output range.

Vibration effect : on any axis, the frequency is 200Hz and the error is + 0.05% / g of the maximum range.

Load effect : as long as the voltage of the input transmitter is higher than 12V, there is no load effect in the load working area.

Explosion-proof type : flameproof ExdIIBT5Gb; Intrinsic safety ExiallCT4/T5/T6Ga;