WISE(P221 / P253)

The differential pressure transmitters of the 984M series are used to measure differential pressure, overpressure and vacuum.

Service intended
P221 and P253 series are suitable to be used in a corrosive environment, chemical, petro-chemical, refining facilities, power generation and marine and foods industry. Its stainless steel case and cover have a good appearance and an excellent protection against corrosion and chemical attack.
Nominal diameter
40 and 50 mm
Accuracy
  • 40mm : ±3.0% of full scale
  • 50mm : ±1.5% of full scale
Scale range (MPa, kPa, bar)
0 ~ 0.2, 0.3, 0.4, 0.6, 1, 1.5, 3.5 MPa
Working pressure
  • Steady : 75% of full scale
  • Over range protection : 130% of full scale
Working temperature
  • Ambient : Model P221 : -40 ~ 65°C Model P253 : -20 ~ 60°C
  • Fluid : Model P221 : Max. 200°C Model P253 : Max. 60°C
Temperature effect
Accuracy at temperature above and below the reference temperature (20℃) will be effected by approximately ±0.4% per 10℃ of full scale
Pressure connection
  • Model P221 : stainless steel (316SS)
  • Model P253 : Nickel plated brass
Element
  • C Type bourdon tube
  • Model P221 : Stainless steel (316SS)
  • Model P253 : Brass
Case
Stainless steel (304SS)
Cover
  • 40 mm : Stainless steel (304SS) and polycarbonate
  • 50 mm : Stainless steel (304SS)
Window
Polycarbonate (40 and 50 mm)
Movement
  • Model P221 : Stainless steel
  • Model P253 : Brass
Dial
White aluminium with black graduations
Pointer
Black painted aluminium alloy
Process connection
⅛", ¼" PT, NPT and PF
Optional
Window : Safety glass

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