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 ~2.5kPa
0 ~ 0.1 to 0 ~ 35MPa
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
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
Diaphragm seal type pressure gauge Model P710-P720-P730.pdf 397 KB
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