Dwyer 2310 Magnehelic Differential Pressure Gauge (5-0-5″w.c.)

Model: 2310

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 provides mounting for helix, helix bearings and pointer shaft.
  • Jeweled bearings are shock-resistant mounted; 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.
  • Samarium Cobalt magnet mounted at one end of range spring rotates helix without mechanical linkages.
  • 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.
  • Silicone rubber diaphragm with integrally molded O-ring is supported by front and rear plates. It is locked and sealed in position with a sealing plate and retaining ring. Diaphragm motion is restricted to prevent damage due to overpressures.
  • Die cast aluminum case is precision made and iridite-dipped to withstand 168 hour salt spray corrosion test. Exterior finished in baked dark gray hammerloid. One case size is used for all standard pressure options, and for both surface and flush mounting.
  • Blowout plug of silicone rubber protects against overpressure on 15 psig rated models. Opens at approximately 25 psig.
  • O-ring seal for cover assures pressure integrity of case.

Dwyer 2310 Specifications

Service Air and non-combustible, compatible gases
May be used with hydrogen
Pressures must be less than 35 psi
Housing Die cast aluminum case and bezel, with acrylic cover
Exterior finish is coated gray to withstand 168 hour salt spray corrosion test
Accuracy ±2% (-HA model ±1) of FS (±3% (-HA ±1.5%) on -0, -100 PA, -125 PA, -10 MM
±4% (-HA ±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)
MP option: 35 psig (2.41 bar), HP option: 80 psig (5.52 bar)
Enclosure Rating IP67
Overpressure Relief plug opens at approximately 25 psig (1.72 bar), standard gages only
Temperature Limits 20 to 140°F (-6.67 to 60°C)
-20°F (-28°C) with low temperature option
Mounting Orientation Diaphragm in vertical position
Process Connections ⅛” emale NPT duplicate high and low pressure taps – one pair side and one pair back
Dimensions 4″ (101.6 mm) diameter dial face

What’s included with the Dwyer 2310

  • Dwyer 2310 Magnehelic Differential Pressure Gauge (5-0-5″w.c.)

Additional Information: