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Dwyer 2001 Magnehelic Differential Pressure Gauge, 2000: 0.-1.0" WC

Dwyer  |   Mfr# 2001  |   Item# DO-68062-06

$64.00 USD/EACH

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  • The industry standard in indicating low air or gas pressures of positive, negative, or differential pressures
  • Large, easy-to-read 4" (102 mm) dial
  • No manometer fluid to evaporate, freeze, or cause toxic or leveling problems
The Magnahelic guage 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. The gauge's motion is damped with high-viscosity silicone fluid. The zero adjustment screw is conveniently located in the plastic cover, and is accessible without removing the cover. O-ring seal provides pressure tightness. Rugged design resists shock, vibration, and overpressure.

The helix is precision-made from an alloy of high magnetic permeability. Mounted in jeweled bearings, it turns freely, following the maganetic field to move the pointer across the scale. The samarium cobalt magnet is mounted at one end of the range spring and rotates the helix without mechanical linkages.
What's Included:
Two 1/8" NPT plugs, two 1/8" rubber tubing adapters, and three mounting adapters with screws
Product Type Differential Pressure Gauges
Media compatibility air and non-combustible gases
Wetted materials plastic
Unit of Measurement " H2O
Range 0 to 1.0" H2O
Process connection 1/8" NPT(F)
Liquid fill silicone
Accuracy ±2%
Dial size (" Dia) 4
Case aluminum
Lens material polycarbonate
Model 2001
Qty/ea 1
Manufacturer number 2001
Brand Dwyer
Display analog dial


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Questions and Answers

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2 Questions | 2 Answers
Displaying questions 1-2
  • Q:

    I have a 2001 gauge trying to read my exhaust vacuum on my pellet stove. It says to use an 1/8 hose but mine came with a hose just a little bigger. Will there be a reading difference with a slightly larger hose?
    Asked on 10/30/2011 by Anonymous

    1 answer



      No, because the hose only brings the pressure being measured to the gauge; the reason for the specificaiton of 1/8th inch was the fitting size.

      Answered on 10/31/2011 by Jon from Technical Support
  • Q:

    do I need hoses to work with the magnehelic gauge?
    Asked on 9/12/2011 by jr from JR, FL

    1 answer



      Well, yes, or some kind of piping or tubing. This unit is designed to read Delta P internally.
      It has FNPT fitiings that will accept a variety of pipe medias, provided they have MNPT fittings or other couplings with a male NPT thread.

      Answered on 9/15/2011 by Chris from Technical Support
Displaying questions 1-2

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