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Description :
Electrical contact type pressure gauge make or break an electric control circuit with regard to the position of pointer. The gauges feature a hub in the window for an adjustment key. Contact actuation is made when there is an upper or lower deviation of the set desired value by the pointer.

Connection types:

P-A, SS-A type (bottom mount)

P-B, SS-B type (bottom mount with back flange)

P-AD, SS-AD type (center back mount)

P-BD, SS-BD type (center back mount with front flange)


metallurgy, power station, petroleum, chemical industries, measure pressure various fluid mediums without explosion risk in mechanical and electrical equipment
Specification :
  • Size:  4”(100mm)
  • Wire type: wiring cable, terminal block, junction box
  • Dial: white aluminum with markings and graduations
  • Window: polycarbonate
  • Pointer: black finished aluminum
  • Ring: black painted steel or 304 stainless steel
  • Case: black painted steel or 304 stainless steel
  • Movement: brass or 304 stainless steel
  • Socket: brass or 316 stainless steel
  • Bourdon Tube: phosphor bronze or 316L tube
  • Connection: 3/8", 1/2" PT, NPT, BSP thread
  • Mounting: bottom or back mount, optional flange
  • Accuracy: +/-1.5% of full scale
  • Operating Temperature Limit: -20 ~ 200°C ( -4 ~ 400°F )
  • Humidity: below 85%
  • Voltage: -220V~380V, 30VA
  • Dielectric strength: 2000V, 50Hz (for circuit inside)
  • Contacts: Single, double

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Wonpro Co., Ltd.