Mid-West Diaphragm Type Differential Pressure Gauge and Switch, Model 522 3-Color Dial
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Model 522 3-Color Dial Diaphragm Type Differential Pressure Gauge & Switch

Brand: Mid-West Instrument
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Mid-West Diaphragm Type Differential Pressure Gauge and Switch, Model 522 3-Color Dial Mid-West Diaphragm Type Differential Pressure Gauge and Switch, Model 522 3-Color Dial Mid-West Diaphragm Type Differential Pressure Gauge and Switch, Model 522 3-Color Dial Mid-West Diaphragm Type Differential Pressure Gauge and Switch, Model 522 3-Color Dial
Model 522 Differential Pressure Gauge & Switch is a compact, weather resistant gauge for challenging DP Applications and installations when quickly identifying critical differential pressures are required. 

It is suitable for use in outdoor and "Hose Down" applications. The Rolling Diaphragm Sensing Element isolates the high and low side. 

Colored bands allow you to quickly identify pressure drop across element. Divided into three sections, each clearly marked for ease of understanding. 

Model 522 is suited for filter applications, line loss, valve drop, and many other differential pressure applications where a simple indicator is needed. 

Used to indicate critical pressure drops or when to change or clean a filter. 

Model 522 is suited for use in Air, Gas, Dissimilar fluids, Wet Gas and process fluids with particulates present. 

Available with or without DIN Plug type switch.
Features
  • Pressure ranges:
    • Minimum 0 to 5 psiD (0 to 0.35 bar)
    • Maximum 0 to 50 psiD (0 to 3.5 bar).
  • Body material options:
    • Aluminum
    • 316 / 316L Stainless Steel
    • Acetal/Plastic Gauge Bodies.
  • Max pressure: 1000 psig.
  • Accuracy ±5% full scale (ascending).
  • 1/4 Female NPT process connections (end connected).
  • 2 1/2 engineered plastic dial.
  • Weather-resistant construction standard.
  • Hermetically sealed switch option.
  • Switch adjustable from 40% to 95% of full scale range.

Specifications

Brand

Accuracy

  • ± 5 %

Approvals & Certifications

  • CE
  • CSA Class I, Div. 1, Groups B, C, D, Class II, Div. 1, Groups E, F, G, Class I, Div. 2, Groups A, B, C, D, Class II, Div. 2, Groups F, G
  • RoHS
  • UL Class I, Div. 1, Groups B, C, D, Class II, Div. 1, Groups E, F, G, Class I, Div. 2, Groups A, B, C, D, Class II, Div. 2, Groups F, G

Diaphragm Material

  • Buna-N
  • Viton

Enclosure, Body Material

  • 316 Stainless Steel
  • 316L Stainless Steel
  • Acetal Plastic
  • Aluminum

Environmental Protection

  • IP65
  • IP66
  • NEMA 4X

NACE & NIST

  • NACE MR-0175

Pressure Type

  • Differential

Seat / Seal Material

  • Seal: Buna-N
  • Seal: Viton

Set Point - Decreasing

  • bar: 0 to 3.45
  • kPa: 0 to 344.7
  • psi: 0 to 50

Set Point - Increasing

  • bar: 0 to 3.45
  • kPa: 0 to 344.7
  • psi: 0 to 50

Switch Type

  • 1 - SPST 60 W, 3 A, 240 Vac/dc

System Pressure

  • bar: 0 to 69
  • kPa: 0 to 6,900
  • psi: 0 to 1,000

Temperature Range

  • -40° to 93° C (-40° to 200° F)

Documentation

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