Mid-West Indicating/Non-Indicating Differential Pressure Switch/Transmitter, Model 220 Piston Type
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Model 220 Piston Type Indicating/Non-Indicating Differential Pressure Switch/Transmitter

Brand: Mid-West Instrument
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Mid-West Indicating/Non-Indicating Differential Pressure Switch/Transmitter, Model 220 Piston Type Mid-West Indicating/Non-Indicating Differential Pressure Switch/Transmitter, Model 220 Piston Type Mid-West Indicating/Non-Indicating Differential Pressure Switch/Transmitter, Model 220 Piston Type
The Model 220 provides a simple low cost loop-powered 8-28 Vdc two wire 4-20 mA Transmitter with highly visible local display allowing for monitoring at the unit and in the control room. 

The transmitter utilizes the same CSA, UL and ATEX rated sensor and explosion proof housing as on the Models 220 and 240 explosion proof switches. 

Classification for Division 2 locations provides another alternative to the installer that does not like additional junction boxes which are required for flying lead interfaces.
Features
  • Piston type differential pressure switch.
  • Pressure range 0-5 psid to 0-100 psid.
  • Working Pressure 4,000 psiG (275 bar).
  • Over-range protection to maximum pressure.
  • 316 S.S. wetted pressure containing body assembly.
  • Weather resistant gauge construction.
  • 4 1/2 dial size.
  • Shatter resistant acrylic lens.
  • CSA & UL Certified:
    • Class I, Division 1 / Groups B, C & D
    • Class II, Division 1 / Groups E, F & G
    • Class I, Division 2 / Groups A, B, C & D
    • Class II, Division 2 / Groups F & G.

Specifications

Brand

Accuracy

  • ± 2 %

Approvals & Certifications

  • ATEX
  • CE
  • CSA Class I, Div. 1, Groups B, C, D, Class II, Div. 1, Groups E, F, G, Class I, Div. 2, Groups A, B, C, D, Class II, Div. 2, Groups F, G
  • IEC 60079-31
  • UL Class I, Div. 1, Groups B, C, D, Class II, Div. 1, Groups E, F, G, Class I, Div. 2, Groups A, B, C, D, Class II, Div. 2, Groups F, G

Enclosure, Body Material

  • 316 Stainless Steel
  • 316L Stainless Steel

Environmental Protection

  • IP66
  • NEMA 4X
  • NEMA 7

NPT Connection

  • 1/2” NPT Female
  • 1/4” NPT Female

Operating Temperature

  • -29° to 66° C (-20° to 150° F)

Seat / Seal Material

  • Seal: Buna-N
  • Seal: Ethylene Propylene (EPR)
  • Seal: Neoprene
  • Seal: Perfluorelastomer
  • Seal: Viton

Set Point - Decreasing

  • bar: 0 to 7
  • kPa: 0 to 700
  • psi: 0 to 100

Set Point - Increasing

  • bar: 0 to 7
  • kPa: 0 to 700
  • psi: 0 to 100

Switch Type

  • SPDT 3 W, 125 Vac/dc, 0.25 A, 60 W, 240 Vac/dc, 1 A
  • SPST 60 W, 240 Vac/dc, 3 A

System Pressure

  • bar: 275
  • kPa: 27,500
  • psig: 4,000

Temperature Range

  • -40° to 85° C (-40° to 185° F)

Documentation

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