9WPS Explosion-Proof Compact Pressure Switch

Brand: Winters Instruments

Features
  • 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

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) - Maximum

Approvals & Certifications

  • CRN [Up to psi: 3,000 (kPa: 20,700, bar: 207) Models]
  • CSA for use in Hazardous Locations Class I, Division 1, Groups B, C, D, Class II, Division 1, Groups E, F, G
  • UL for use in Hazardous Locations Class I, Division 1, Groups A, B, C, D, Class II, Division 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

Show More