Winters Instruments Low Pressure Diaphragm Pressure Switch, 4WPS
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4WPS Low Pressure Diaphragm Pressure Switch

Brand: Winters Instruments
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Winters Instruments Low Pressure Diaphragm Pressure Switch, 4WPS
Specifications
  • Single or dual set point 
  • Inches Hg Vacuum to psi: 150 (kPa: 1,030, bar: 10.3) pressure range 
  • Fixed deadband 
  • Simple set point adjustment 
  • Anodized aluminum housing with stainless steel diaphragm 
  • Hermetically sealed contacts available (excluding vacuum models) 
  • ±0.5% accuracy 
  • NEMA 4 enclosure rating (NEMA 4X optional) 
  • UL, CSA approved and PED compliant 
  • CRN registered 

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Specifications

Brand

Accuracy

  • ± 0.5 % of Adjustable Range

Adjustment Type

  • Factory Set (Pre-Set)
  • Field Adjustable
  • Set Point Adjustment with Self Locking Adjustment Screw

Ambient Temperature Range

  • -54° to 74° C (-65° to 165° F)

Approvals & Certifications

  • CRN
  • CSA
  • PED 97/23/EC Compliant
  • UL

Deadband, Approximate

  • Fixed Deadband psi: -0.39 to 6 (kPa: -2.7 to 41.4, bar: -0.027 to 0.4)

Diaphragm Material

  • 17-7 pH (631) Stainless Steel

Electrical Connectors

  • Terminal Block through 1/2” NPT Female Conduit Connection

Electrical Contacts

  • Gold
  • Normally Closed
  • Normally Open

Electrical Rating

  • 0.5 A at 6-28 Vdc (Non UL)
  • 1 A at 125 Vac with Gold Contacts
  • 1 A at 24 Vdc with Gold Contacts
  • 10 A at 125/250 Vac (UL)
  • 4 A at 125/250 Vac
  • 5 A at 125/250 Vac

Enclosure, Body Material

  • Aluminum

Environmental Protection

  • IP66
  • NEMA 4
  • NEMA 4X

NPT Connection

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

Pressure Range

  • psi: -14.7 to 150 (kPa: -101.6 to 1,034, bar: -1.01 to 10.34)

Process Connection Material

  • 304 Stainless Steel

Proof Pressure

  • psi: -14.7 to 300 (kPa: -101.6 to 2,040, bar: -1.01 to 20.4)

Set Point - Decreasing

  • bar: -1.01 to 10.34
  • Inches Hg: -30 to -0.06
  • kPa: -101.6 to 1,034
  • psi: -14.7 to 150

Set Point - Increasing

  • bar: -1.01 to 10.34
  • Inches Hg: -30 to -0.06
  • kPa: -101.6 to 1,034
  • psi: -14.7 to 150

Storage Temperature

  • -54° to 93° C (-65° to 200° F)

Switch Type

  • SPDT

System Pressure

  • bar: -1 to 20.7
  • kPa: -101.4 to 2,068
  • psi: -14.7 to 300

  • Oil and Gas
  • Mining
  • General Industrial Applications

Documentation

Data Sheet

Operating Instructions

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