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Navigate:  Home / Pressure Meters / Differential Manometer Gages - Air & Gases
Dwyer Series 2000 magnehelic static pressure gage from MeterMallSeries 2000 Dwyer Magnehelic
Differential Pressure Gage
 
     Select the Dwyer Magnehelic® gage for high accuracy measurement of differential pressure of air and non-combustible compatible gases.  Gauge is guaranteed within 2% of full scale.  Select from a wide choice of 81 models available to suit your needs precisely. Using Dwyer's simple, frictionless Magnehelic® gage movement, it quickly indicates low air or non-corrosive gas pressures--either positive, negative (vacuum) or differential. The design resists shock, vibration and over-pressures. No manometer fluid to evaporate, freeze or cause toxic or leveling problems. It's inexpensive, too.

     The Magnehelic® gage is the industry standard to measure fan and blower pressures, filter resistance, air velocity, furnace draft, pressure drop across orifice plates, liquid levels with bubbler systems and pressures in fluid amplifier or fluidic systems. It also checks gas-air ratio controls and automatic valves, and monitors blood and respiratory pressures in medical care equipment.
 
Features of the Series 2000 Dwyer Magnehelic Differential Pressure 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 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.
Specifications of the Series 2000 Dwyer Magnehelic Differential Pressure Gage
  • Service: Air and non-combustible, compatible gases. (Natural Gas option available.)
  • 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: ±2% of full scale (±3% on -0, -100PA, -125PA, -10MM and ±4% on -00, -60PA, -6MM ranges), throughout range at 70°F (21.1°C).
  • Pressure Limits: -20" 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).
  • 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).
  • 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); MP & HP 2 lb 2 oz (963 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 adapterswith screws. (Mounting and snap ring retainer substituted for 3 adapters in MP & HP gage accessories.)

Options and Accessories for the Dwyer Static Pressure Gage

Options:
  • ASF Adjustable Signal Flag
  • HP High Pressure Option
  • LT Low Temperatures to -20°F
  • MP Med. Pressure Option
  • SP Setpoint Indicator
  • Scale Overlays Red, Green, Yellow, Mirrored or Combination, Specify Locations

Accessories:

  • A-299 - Mounting bracket, flush mount Magnehelic® gage in bracket. Bracket is then surface mounted. Steel with gray hammertone epoxy finish.
  • A-300 - Flat aluminum bracket for flush mounting Magnehelic® gage.
  • A-310A - 3-way vent valve, plastic, 1/8" NPT to 1/4" metal tubing, 80 psi rating, replaces former Model A-310 (brass).
  • A-432 - Plastic carrying case for Magnehelic® gage of standard range, except high pressure connection, includes 9 ft (2.7m) of 3/16" ID rubber tubing, stand-hang bracket & terminal tube with holder.
  • A-321 - Brass safety relief valve, protects Magnehelic® gage or Photohelic® switch/gage against over pressure due to regulator failure, etc, opens at 10 psi. Mounts in tee fitting. 1/4" NPT(M) (use two for DP application).

Select Units of Measure to meet your needs:

Product   Description   Price
Magnehelic: Inches Water Column
Dwyer Magnehelic Differential Pressure Gauge. Inches Water Column
$77.95 Pricing

Magnehelic: Inches Water Column - Zero Center
Dwyer Magnehelic Differential Pressure Gauge. Inches Water Column - Zero Center
$74.95 Pricing

Magnehelic: Pounds per Square Inch (PSI)
Dwyer Magnehelic Dfferential Pressure Gauge. Pounds per Square Inch (PSI)
$67.95 Pricing

Magnehelic: English/Metric (" w.c. / Pa)
Dwyer Magnehelic Differential Pressure Gauge. English/Metric (" w.c. / Pa)
$73.95 Pricing

Magnehelic: Pascals (Pa)
Dwyer Magnehelic Differential Pressure Gauge. Pascals (Pa)
$73.95 Pricing

Magnehelic: Pascals (Pa) - Zero Center
Dwyer Magnehelic Differential Pressure Gauge. Pascals (Pa) - Zero Center
$74.95 Pricing

Magnehelic: Kilopascals (KPa)
Dwyer Magnehelic Differential Pressure Gauge. Kilopascals (KPa)
$63.95 Pricing

Magnehelic: Kilopascals (KPa) - Zero Center
Dwyer Magnehelic Differential Pressure Gauge. Kilopascals (KPa) - Zero Center
$99.95 Pricing

Magnehelic: mm Water Column (w.c.)
Dwyer Magnehelic Differential Pressure Gauge. mm w.c.
$73.95 Pricing

Magnehelic: mm Water Column (w.c.) - Zero Center
Dwyer Magnehelic Differential Pressure Gauge. mm w.c. - Zero Center
$99.95 Pricing

Magnehelic: cm Water Column (w.c.)
Dwyer Magnehelic Differential Pressure Gauge. cm w.c.
$63.95 Pricing

Magnehelic: cm Water Column (w.c.) - Zero Center
Dwyer Magnehelic Differential Pressure Gauge. cm w.c. - Zero Center
$78.95 Pricing
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