Model 142 Diaphragm Type Differential Pressure Switch & Transmitter

Brand: Mid-West Instrument

The Model 142 Transmitter offers highly visible local display along with the independent 4-20 mA output. 

This allows for precise monitoring at the unit or at the control panel. 

This unit works well in tank level applications and in fluids with high solids content.
Features
  • DP Ranges from 0 to 20 WC to 0 to 25 psid.
  • Elastomer diaphragm sensing element, no cross port leakage.
  • Up to 3,000 psig working pressure (200 bar).
  • Over-range protection.
  • Weather Resistant & Corrosion resistant gauge front.
  • Shatter resistant acrylic lens.
  • 1/4 or 1/2 Female NPT process connection options.
  • 2 1/2, 3 1/2 & 4 1/2 dial sizes available.

Specifications

Accuracy

  • ± 2 % of Full Scale

Approvals & Certifications

  • CE
  • CSA (C,US)
  • UL (C,US)

Enclosure, Body Material

  • 316L Stainless Steel
  • Aluminum
  • Brass

Environmental Protection

  • IP66
  • NEMA 4X

NACE & NIST

  • NACE MR-0175

Operating Temperature

  • Gauge with or without Switch: -40° to 93° C (-40° to 200° F)
  • Transmitter: -20° to 150° F (-20° to 65° C)

Pressure Type

  • Differential

Set Point - Decreasing

  • bar: 0 to 1.724
  • Inches WC: 0 to 20
  • kPa: 0 to 172.4
  • psi: 0 to 25

Set Point - Increasing

  • bar: 0 to 1.724
  • Inches WC: 0 to 20
  • kPa: 0 to 172.4
  • psi: 0 to 25

Switch Type

  • 1 or 2 - SPDT 3 W, 125 Vac/dc, 0.25 A
  • 1 or 2 - SPST (Normally Open) 25 W, 240 Vac/dc, 0.5 A

System Pressure

  • bar: 200
  • kPa: 20,000
  • psig: 3,000

  • Tank Level Monitoring Horizontal or Vertical
  • Flow Indication/Balancing
  • Filter Monitoring for Gases
  • Water Treatment Applications
  • Vacuum Application

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