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Model 220 Piston Type Indicating/Non-Indicating Differential Pressure Switch/Transmitter
Brand: Mid-West InstrumentThe 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)