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9WPS Explosion-Proof Compact Pressure Switch
Brand: Winters Instruments
Specifications
- Vacuum to psi: 10,000 (kPa: 68,970, bar: 689.7) pressure range
- Explosion proof SPDT or DPDT switch
- Stainless steel with Viton and Teflon wetted parts
- ANSI dual seal design
- Dia-seal/piston sensor
- Safe to adjust during operation
- Lockable setpoint wheel to avoid shifting during operation
- ±2% of full scale accuracy
- NEMA 4X, 7 and 9 enclosure rating
- UL and CSA approved for hazardous locations
- Designed for sour gas applications requiring NACE standards MR0175-2009
- CRN registered [up to psi: 3,000 (kPa: 20,700, bar: 207) models]
Specifications
Brand
Accuracy
- ± 2 % of Full Scale
Adjustment Type
- Field Adjustable
- Set Point Adjustment: Internal Adjustment Wheel with Built-in Locking Set Screws
Ambient Temperature Range
- -40° to 40° C (-40° to 104° F), [60° C (140° F) - Max.
Approvals & Certifications
- CRN [Up to psi: 3,000 (kPa: 20,700, bar: 207) Models]
- CSA for use in Hazardous Locations Class I, Div. 1, Groups B, C, D, Class II, Div. 1, Groups E, F, G
- UL for use in Hazardous Locations Class I, Div. 1, Groups A, B, C, D, Class II, Div. 1, Groups E, F, G
Circuit Protection
- EMI/RFI Protected: EN 55011
Deadband, Approximate
- Fixed Deadband psi: -4.42 to 2,000 (kPa: -30.5 to 13,790, bar: -0.305 to 137.9)
Diaphragm Material
- Buna-N
- EPR (No UL or CSA)
- Viton
Electrical - Free Leads
- 18 AWG, 18” (457.2 mm)
Electrical Connectors
- 1/2” NPT Male Conduit Connection
Electrical Contacts
- Gold
- Normally Closed
- Normally Open
Electrical Rating
- 1 A at 125 Vac
- 11 A at 125/250 Vac
- 5 A at 30 Vdc
Enclosure, Body Material
- 316 Stainless Steel
Environmental Protection
- Explosion-proof
- IP66
- NEMA 4X
- NEMA 7
- NEMA 9
NACE & NIST
- NACE MR-0175: 2009
NPT Connection
- 1/2” NPT Female
- 1/4” NPT Female
O-Ring Material
- Buna-N
- EPR (No UL or CSA)
- Viton
Piston Material
- High Pressure: Stainless Steel (SST) with Teflon Back-Up Ring & Viton O-Ring
Pressure Cycles
- 2.5 Million Cycles
Pressure Range
- psi: -14.7 to 10,000 (kPa: -101.6 to 68,970, bar: -1.01 to 689.7)
Process Connection Material
- Port: 316 Stainless Steel
Proof Pressure
- psi: -14.7 to 15,000 (kPa: -101.6 to 103,400, bar: -1.01 to 1,034)
SAE Connection
- 7/16”-20 SAE Female
Seat / Seal Material
- Vacuum & Low Pressure - Seal: Viton Diaphragm
Set Point - Decreasing
- bar: -1.01 to 689.7
- Inches Hg: -30 to -1
- kPa: -101.6 to 68,970
- psi: -14.7 to 10,000
Set Point - Increasing
- bar: -1.01 to 689.7
- Inches Hg: -30 to -1
- kPa: -101.6 to 68,970
- psi: -14.7 to 10,000
Shock
- 50 G, 11 milliseconds, MIL-S-901C
Switch Type
- DPDT
- SPDT
System Pressure
- bar: -1.01 to 689.5
- kPa: -101.6 to 68,947
- psi: -14.7 to 10,000
Vibration
- 10 G at 10 to 500 Hz, MIL-STD-202F
- Hazardous Locations Including Safety Panels
- Pump and Gas Compressors
- Turbines
- Oil & Gas Applications
- Sour Gas Applications
- Power Plants
- Chemical Facilities
- Water Treatment
- Designed for Hazardous Locations where an Explosion Proof Switch is Required
