DWYER SERIES 2000 MAGNEHELIC® DIFFERENTIAL PRESSURE GAGES

Series 2000 Magnehelic Gage is a versatile low differential pressure gage with 81 models and 27 options to choose from. Using Dwyer’s simple, frictionless Magnehelic gage movement, it quickly indicates air or noncorrosive gas pressures–either positive, negative (vacuum) or differential. The design resists shock, vibration, over-pressures and is weatherproof to IP67. Product Applications – Filter Monitoring – Air Velocity with Dwyer Pilot Tube – Blower Vacuum Monitoring – Fan Pressure Indication – Duct, Room or Building Pressures – Clean Room Positive Pressure Indication Note: May be used with Hydrogen. Order a Buna-N diaphragm. Pressures must be less than 35 psi.

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Feature:

  • Easy to read gage through undistorted plastic face permits viewing from far away
  • Patented design provides a quick response to pressure changes, which means no delay in assessing critical situations
  • Durable and rugged housing and high-quality components combine to provide long service life and minimized downtime
  • High accuracy option is twice as accurate as the standard Magnehelic® gage.
  • Bezel provides flange for flush mounting in panel.
  • Clear plastic face is highly resistant to breakage. Provides undistorted viewing of pointer and scale.
  • Precision litho-printed scale is accurate and easy to read.
  • Red tipped pointer of heat-treated aluminum tubing is easy to see. It is rigidly mounted on the helix shaft.
  • Pointer stops of molded rubber prevent pointer over-travel without damage.
  • “Wishbone” assembly mounts helix, helix bearings and pointer shafts.
  • Jeweled bearings are shock-resistant mounted; and provide virtually friction-free motion for helix. Motion damped with high-viscosity silicone fluid.
  • Zero adjustment screw is conveniently located in the plastic cover, and is accessible without removing the cover. O-ring seal provides pressure tightness.
  • Helix is precision made from an alloy of high magnetic permeability. Mounted in jeweled bearings, it turns freely, following the magnetic field to move the pointer across the scale.
  • Calibrated range spring is flat spring steel. Small amplitude of motion assures consistency and long life. It reacts to pressure on diaphragm. Live length adjustable for calibration.

 

Application:

  • Filter Monitoring
  • Air Velocity with Dwyer Pitot Tube
  • Blower Vacuum Monitoring
  • Fan Pressure Indication
  • Duct, Room or Building Pressures
  • Clean Room Positive Pressure Indication

Specification

Service Air and non-combustible, compatible gases (natural gas option available). Note: May be used with hydrogen. Order a Buna-N diaphragm. Pressures must be less than 35 psi.
Wetted Materials Consult factory.
Housing Die cast aluminum case and bezel with acrylic cover. Exterior finish is coated gray to withstand 168 hour salt spray corrosion test.
Accuracy ±1% FS (±1.5% on -0, -100PA, -125PA, -10MM and ±2% on -00, -60PA, -6MM ranges) throughout range at 70°F (21.1°C).
Pressure Limits -20 in Hg to 15 psig (-0.677 bar to 1.034 bar).
Overpressure Relief plug opens at approximately 25 psig (1.72 bar), standard gages only. See Overpressure Protection note on catalog page.
Temperature Limits 20 to 140°F (-6.67 to 60°C).
Size 4″ (101.6 mm) diameter dial face.
Mounting Orientation Diaphragm in vertical position. Consult factory for other position orientations.
Process Connections 1/8″ female NPT duplicate high and low pressure taps – one pair side and one pair back.
Weight 1 lb 2 oz (510 g).
Standard Accessories Two 1/8″ NPT plugs for duplicate pressure taps, two 1/8″ pipe thread to rubber tubing adapters, and three flush mounting adapters with screws.
Agency Approvals Meets the technical requirements of EU Directive 2011/65/EU (RoHS II).

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