Most Accurate Pressure Gauge- Diaphragm Pressure Gauge-Angle Connection Pressure Gauge
Working principle
The measured medium pressure P produced to diaphragm, and diaphragm appear deformation, compress pressure gauge sealing liquid, and generate P-DP pressure. If the rigid good enough, then DP is small. Then the measure pressure is similar to the measure medium pressure.

Diaphragm gauge liquid level difference
More than other type, the diaphragm gauge with soft tube type, due to the pressure sensing part installation position is different than ordinary type, this type will create liquid level difference influence value P.

Diaphragm-seal pressure gauge
Diaphragm pressure gauge the temperature influence is related to the amount of sealing liquid expanding coefficient diaphragm stiffness and affected by the temperature of the pressure parts. When the temperature deviated from 20+/- 5 ° C, rigid rod influence <0.1% ° C, and soft type (remote mounting type) influence is < 0.1%+/-0.025L% ° C, (L - pressure conduit length m). Diaphragm type pressure gauge's sealing liquid should be choose carefully according to the different environment.
The choice of sealing liquid
To ensure the diaphragm pressure gauge reliability and safety, should select a suitable sealing liquid according to different application.
The choice of the diaphragm part corrosion resistant material