Series AT22000 ATEX/IECEx Approved Series 2000 Magnehelic Differential Pressure Gauge

Brand: Dwyer Instruments, LLC

The popular Series AT22000 Magnehelic® Differential Pressure Gauge is now available in a flame-proof ATEX enclosure with the new ATEX approved AT22000 Series.

This gauge can indicate positive, negative or differential pressures and is accurate within 2%.

Attention: Check local safety rules and warnings on unit and manual for a correct use of the instrument in hazardous area.
  • ATEX housing provides all the capabilities and value of the Magnehelic in a Flame and Explosion proof enclosure
  • Quick response to pressure changes means no delay in assessing critical situations
  • Durable and rugged housing and high-quality components combined provides longservice life and minimized down-time
  • High impact strength and high temperature rated for applications where hazardous environments exist



  • ± 2 % of Full Scale at 21.1° C (70° F)

Approvals & Certifications

  • IECEx
  • ATEX

Cover Material

  • Glass Cover

Enclosure Finish

  • Texture Epoxy Coat RAL7038.

Enclosure, Body Material

  • Aluminum
  • Aluminum Die Cast
  • Bezel with Acrylic Cover

Environmental Protection

  • IP65
  • IP66


  • Glass Lens


  • Air
  • Non-Combustible, Compatible Gases

NPT Connection

  • 1/8” NPT Female

Overpressure & Static Pressure Limits

  • Relief Plug Opens at Approximately psig: 25 (kPa: 172, bar: 1.72)

Pressure Range

  • bar: 0 to 5.52
  • Inches WC: 0 to 160

Process Connection Material

  • 316 Stainless Steel
  • Brass

Sensor Orientation

  • Diaphragm in Vertical Position

Temperature Range

  • -6.67° to 60° C (20° to 140° F)

  • Fan and Blower Pressures
  • Filter Resistance
  • Air Velocity
  • Furnace Draft
  • Liquid Levels with Bubbler Systems
  • Pressure in Fluid Amplifier or Fluidic Systems
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