Diaphragm seal type pressure gauge 
Model : P710-P720-P730Catalogue Download : catalogue

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.

Internal diaphragm

Refer to gauge model

●-0.1 ~ 0 to -0.1 ~2.5kPa 
●0 ~ 0.1 to 0 ~ 35MPa

Silicone oil

●Ambient : -20 ~ 65°C 
●Fluid : Max. 100°C

Diaphragms are available in many corrosion resistant materials. Compatibility of selected material and process fluid is the responsibility of user.

Accuracy at temperature above and below the reference temperature (20℃) will be effected by approximately ±0.5% per 10℃ of full scale

Stainless steel (304SS, 316SS)

316L SS, Monel, Hastelloy-C 
Titanium, Tantalum, Nickel, Alloy20

●Stainless steel (304SS, 304L SS, 316SS, 316L SS)
●Monel, Hastelloy-C, Titanium, Nickel

●Model P710 : PT, NPT and others feasible 
●Model P720, P730 : Flanges to ANSI, 
JIS or other standard

●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

PTFE lining is available up to 10 MPa (Coating) for P720 and P730 Series