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Product name Diaphragm type low pressure gauge_P428,P429
Model P428, Screwed process connection P429, "I" type flange process connection

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<Service intended>

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.

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  :  Ambient : -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>

Process 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