Dwyer Magnehelic Differential Pressure Gauge Model 2000-0.5KPA

About Dwyer Magnehelic Differential Pressure Gauge Model 2000-0.5KPA

Series 2000 Magnehelic Differential Pressure Gage, 0-0.5 kPa

Indicate Positive, Negative or Differential

Select the Magnehelic Gage for high accuracy-guaranteed. Using Dwyers simple, frictionless Magnehelic Gage movement, it quickly indicates low air or non-corrosive gas pressures. The design resists shock, vibration and over-pressures. No manometer fluid to evaporate, freeze or cause toxic or leveling problems. Its 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.

Product Applications

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

Approvals

• RoHS Certificate
• GOST-R Certificate

Features

• 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.
• 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.
• Overpressure Protection
  Blowout plug is comprised of a rubber plug on the rear which functions as a relief valve by unseating and venting the gage interior when over pressure reaches approximately 25 psig (1.7 bar). To provide a free path for pressure relief, there are four spacer pads which maintain 0.023" clearance when gage is surface mounted. Do not obstruct the gap created by these pads. The blowout plug is not used on models above 180" of water pressure, medium or high pressure models, or on gages which require an elastomer other than silicone for the diaphragm. The blowout plug should not be used as a system overpressure control. High supply pressures may still cause the gage to fail due to over pressurization, resulting in property damage or serious injury. Good engineering practices should be utilized to prevent your system from exceeding the ratings or any component.
• O-ring seal for cover assures pressure integrity of case.
• Samarium Cobalt magnet mounted at one end of range spring rotates helix without mechanical linkages.

Specification

Service - Air and non-combustible, compatible gases

Housing - Die cast aluminum case and bezel, with acrylic cover, Exterior finish is coated gray to  withstand 168 hour salt spray corrosion test

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

Temperature Limits -  20 to 140 F

Mounting Orientation - Diaphragm in vertical position

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 adapterswith screws

Agency Approval - RoHS

Accuracy - 2% of FS throughout range at 70 F (21.1 C)

Size - 4" (101.6 mm) diameter dial face

Precision Monitoring for Low Differential Pressures

Achieve accurate and continuous pressure monitoring with the Dwyer Magnehelic Gauge, Model 2000-0.5KPA. Its analog display, combined with a high-resolution dial and external zero adjustment, ensures clear and reliable readingsmaking it an essential instrument for maintaining air quality and system performance in clean rooms, HVAC systems, and more.


Rugged Construction for Demanding Applications

Encased in a powder-coated, die-cast aluminum housing with a polycarbonate window, this gauge is designed for longevity and resilience. With a protection rating of IP54, it resists dust and splashes, while the silicone seal ensures leak-free performance in industrial settings. Suitable for both surface or flush mounting, it adapts effortlessly to technical installations.


Effortless Setup and Versatile Usage

The Magnehelic 2000-0.5KPA is supplied with two 1/8" NPT plugs, mounting screws, and a detailed instruction sheet for quick installation. Its universal design supports monitoring across filters, fans, and room pressures, while its RoHS compliance and non-electric operating principle ensure safe and green operations.