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Diaphragm seal type pressure gauge_P710,P720,P730


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Diaphragm seal type pressure gauge_P710,P720,P730

Diaphragm seal type pressure gauge_P710,P720,P730


Service intended

Diaphragm seal type gauges are suitable for the situation where the process medium would corrode the instrument connection and pressure sensing element. Furthermore, this type of gauge is highly recommended in a situation where the process medium contains suspended solids, or if it is sufficiently viscous to clog the instrument connection and pressure sensing element. Additionally, it is recommended to be used where the process medium might freeze or solidify the instrument connection and pressure sending element due to the ambient or process temperature change, and where the process medium requires the flushing from the system to prevent any contamination.

Design Internal diaphragm
Accuracy Refer to gauge model
Suitable pressure range (MPa, kPa,  bar) -0.1 ~ 0 to -0.1 ~ 2.5 MPa
0 ~ 0.1 to 0 ~ 35 MPa
Filling liquid Silicone oil
Working temperature Ambient : -20 ~ 65 °C
Fluid : Max. 100 °C
Diaphragm material Diaphragms are available in many corrosion resistant materials. Compatibility of selected material and process fluid is the responsibility of user.
Temperature effect Accuracy at temperature above and below the reference temperature (20 ℃) will be effected by approximately
±0.5 % per 10 ℃ of full scale

Standard features

Process connection Model P710 : PT, NPT and others feasible
Model P720, P730 : Flanges to ANSI, JIS or other standard
Upper flange (Gauge side) Stainless steel (304SS, 316SS, Titanium)
Diaphragm 316L SS, Monel, Hastelloy-C Titanium, Tantalum, Nickel, Alloy20
Under flange (Process side) Stainless steel (304SS, 304L SS, 316SS, 316L SS) Monel, Hastelloy-C, Titanium, Nickel
Certificates ATEX Ex II GD c IIC TX
Option ■ Diaphragm and under flange are available in PTFE coating or PTFE lining (★See note)
■ Under flange (Process side) are available in purging plug or heating/cooling jacket


Releated File

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