Dwyer Explosion-proof Differential Pressure Switch, Series H3
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H3S-3ST

Series: Series H3 Explosion-Proof Differential Pressure Switch Brand: Dwyer Instruments, LLC
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Specifications

Brand

Adjustment Type

  • Factory Set (Pre-Set)
  • Field Adjustable

Approvals & Certifications

  • ATEX
  • CE
  • CSA
  • UL

Deadband, Approximate

  • Approximately 5 % of Range

Diaphragm Material

  • Fluoroelastomer
  • Nitrile

Electrical Connectors

  • 18 AWG x 18" Leadwires
  • 3/4" NPT Female
  • ATEX Approved Internal Terminal Block
  • UL, CSA Approved Internal Terminal Block

Electrical Contacts

  • Gold
  • Silver

Electrical Rating

  • 5 A at 125/250 Vac, 30 Vdc

Enclosure, Body Material

  • Aluminum

Environmental Protection

  • IP56
  • IP66
  • NEMA 3, 4X / IP56, 66
  • NEMA 4X

NPT Connection

  • 1/8" NPT Female

O-Ring Material

  • Nitrile
  • Viton

Operating Temperature

  • -20° to 104° C (-4° to 220° F)

Process Connection Material

  • 316 Stainless Steel
  • Aluminum

Process Temperature

  • -20° to 90° C (-4° to 220° F)

Set Point - Decreasing

  • bar: 0.03 to 13.8
  • inH₂O: 10 to 80
  • kPa: 3.447 to 1,379
  • psid: 0.5 to 200

Set Point - Increasing

  • bar: 0.03 to 13.8
  • inH₂O: 10 to 180
  • kPa: 3.447 to 1,379
  • psid: 0.5 to 200

Switch Type

  • DPDT
  • SPDT

System Pressure

  • bar: 103.4
  • kPa: 10,342
  • psi: 1,500

Documentation

Approvals

Catalogs

Manuals

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