Diaphragm seal type low pressure gauge


P428 and P429 series are consisted of diaphragms which are designed to protect device and designed to isolate pressure gauge from corrosive, contaminative and viscous pressure media.

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Extra Information

Extra Information


Nominal diameter 100 and 150 mm
Accuracy ±1.5% of full scale
Scale range (kPa, mbar) -1 ~ 0 to -35 ~ 0 kPa
0.5 to ±15 kPa
0 ~1 to 0 ~ 35 kPa
Working temperature SAmbient : -20 ~ 65°C
Fluid : Max. 100°C
Temperature effect Accuracy at temperature above and below the reference temperature (20℃) will be effected by approximately ±0.8% per 10℃ of full scale
Standard Features

Standard Features


Pressure connection Model P428 : PT and NPT, others feasible
Model P429 : Flanges to ANSI, JIS or other standard
Upper flange (Gauge side) Stainless steel (304SS, 316SS)
Under flange (Process side) Stainless Steel (304SS, 304L SS, 316SS, 316L SS)
Monel, Hastelloy-C
Diaphragm 316L SS
Certificates ATEX Ex II GD c IIc TX
Option Diaphragm : PTFE lining
Under flange : PTFE lining PTFE coating
Zero adjustment : Internal, only available with diameter 100 mm