Dwyer 2020D Magnehelic Differential Pressure Gauge

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Dwyer 2020D Magnehelic Differential Pressure Gauge

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MOQ : 12 Pieces

Dwyer 2020D Magnehelic Differential Pressure Gauge Specification

Display
Analog

Sensor Type
Differential Pressure Gauge

Grade
Industrial

Bourdon Tube
Not Applicable (Uses diaphragm sensing element)

Seal Material
Silicone rubber

Outer Size
4 (101.6 mm) Diameter

Thread
1/8 Female NPT

Material
Die-cast aluminum case

Dial Material
Aluminum, white coated with black markings

Pointer Material
Black aluminum

Processing Type
Mechanical

Diameter
4 inches (101.6 mm)

Glass Size
4 inches (Acrylic window)

Mount Type
Surface or flush mount

Scale Range
0-0.5 inch w.c. (water column)

Accuracy
2% of full scale

Accessories
Two 1/8 NPT plugs, two mounting screws, surface mounting flange and instructions included

Temperature Range
20 to 140F (-6.67 to 60C)

Resolution
0.01 inch w.c.

Enclosure Protection
IP52 (front)

Compliance
RoHS compliant

Zero Adjustment
External screw for zero point adjustment

Overpressure Limit
Rated for occasional overpressure

Maximum Pressure
15 psig (1.034 bar)

Model
2020D

Response Time
Approximately 1 second

Orientation Effect
Max. 0.25 inch w.c. (Add/Subtract before zeroing)

Weight
Approx. 450 g (1 lb)

Connections
High and Low pressure ports, 1/8" NPT Female

Dwyer 2020D Magnehelic Differential Pressure Gauge Trade Information

Minimum Order Quantity
12 Pieces

FOB Port
Delhi

Payment Terms
Cash in Advance (CID), Cash Against Delivery (CAD), Cash Advance (CA), Cash on Delivery (COD)

Supply Ability
1 Piece Per Day

Delivery Time
1-2 Days

Main Export Market(s)
Asia, Middle East

Main Domestic Market
All India

About Dwyer 2020D Magnehelic Differential Pressure Gauge

Dwyer 2020D Magnehelic Differential Pressure Gauge

Magnehelic Pressure Gauge 0-20 in H2O, 0-5 kPa

Dual scale. Bezel provides flange for flush mounting in panel. Clear plastic face is highly resistant to breakage. Provides undistorted viewing of pointer and scale.

Dwyer 2020D MAGNEHELIC, DIFFERENTIAL PRESSURE GAUGE, 0 - 20, 0-5 KPA

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.

What's included with the Dwyer 2020D

Dwyer 2020D Magnehelic Differential Pressure Gauge (0-20"w.c. & 0-5 kPa)

High-Precision Differential Pressure Measurement

Engineered with an analog diaphragm sensing element, the Magnehelic 2020D ensures reliable and accurate detection of air and compatible gas pressures. Its resolution of 0.01 inch w.c. and 2% full scale accuracy make it suitable for critical industrial and laboratory applications demanding precise monitoring.

Rugged and Adaptable Design for Industrial Use

With its die-cast aluminum case, matte-polished finish, and silicone rubber seals, the Magnehelic 2020D is built for durability and longevity. Rated IP52 at the front, it resists environmental dust and moisture. The external zero adjustment and dual mounting options make installation and calibration straightforward.

FAQ's of Dwyer 2020D Magnehelic Differential Pressure Gauge:

Q: How does the Dwyer 2020D Magnehelic Differential Pressure Gauge function?

A: This gauge measures the differential pressure between two points using a diaphragm sensing element. Connected via high and low pressure 1/8" NPT female ports, it registers changes in pressure and displays them on an easy-to-read analog dial in inches of water column.

Q: What gases can I measure with the 2020D Magnehelic Gauge?

A: The 2020D is designed to measure air and compatible gases that do not attack its wetted parts, including die-cast aluminum, silicone rubber, and aluminum. It is not intended for use with corrosive or aggressive gases.

Q: When should I zero the gauge for accurate readings?

A: Zeroing should be performed before use and after installation to account for any orientation effects, which can introduce up to 0.25 inch w.c. error. Use the external screw provided for zero point adjustment while the gauge is at rest and both ports are open to atmospheric pressure.

Q: Where can I mount the Dwyer 2020D gauge?

A: The gauge is versatile in mounting and can be installed on surfaces or flush-mounted using the included mounting flange and hardware, making it suitable for equipment panels, instrument boards, or walls in industrial settings.

Q: What is the process for installing the gauge and its accessories?

A: Installation involves connecting the provided 1/8" NPT plugs to the pressure ports as needed, securing the gauge with the supplied screws, and ensuring the surface or flush mounting is stable. The accompanying instructions detail step-by-step procedures for a secure fit.

Q: What are the main benefits of using the Dwyer Magnehelic 2020D Gauge?

A: Users benefit from high accuracy, rapid response (about 1 second), durable construction, and straightforward installation. The analog display is clear and reliable, with minimal maintenance required, making it ideal for monitoring HVAC systems, filtration, and laboratory air flow.

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