Dwyer USA Magnehelic Gauges 0 To 80 MM WC

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Dwyer USA Magnehelic Gauges 0 To 80 MM WC Specification

Sensor Type
Diaphragm Type

Grade
Industrial Grade

Display
Analog

Outer Size
Standard (approx. 115mm diameter housing)

Seal Material
Silicone Rubber

Thread
1/8 NPT

Material
Die-Cast Aluminum Case

Dial Material
White Aluminum

Pointer Material
Black Aluminum

Processing Type
Precision Machined

Diameter
115 mm Approx.

Glass Size
Full View Acrylic Lens

Mount Type
Surface / Panel Mount

Scale Range
0 to 80 mm WC

Accuracy
2% of Full Scale

Finishing
Powder Coated

Measure Pressure Of
Air and non-corrosive gases

Accessories
Two 1/8 NPT plugs, two 1/8 NPT to rubber tubing adapters, and three flush mounting adapters

Dwyer USA Magnehelic Gauges 0 To 80 MM WC Trade Information

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

Main Export Market(s)
Australia, North America, Eastern Europe, Middle East, Western Europe, Africa, South America, Asia, Central America

Main Domestic Market
All India

About Dwyer USA Magnehelic Gauges 0 To 80 MM WC

Dwyer USA Magnehelic Gauges 0 To 80 MM WC

Model: 2000-80 MM

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

Dwyer 2000-80MM MAGNEHELIC DIFFERENTIAL PRESSURE GAUGE 0-80 MM

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.

High-Precision Differential Pressure Measurement

Dwyer Magnehelic Gauges are engineered for applications needing dependable monitoring of low-pressure air and non-corrosive gases. Widely used in HVAC systems, cleanrooms, laboratories, and building management, they deliver accurate readings and feature a robust, powder-coated finish for durability in harsh environments.

Versatile Installation and Maintenance

The gauge provides mounting flexibility with both side and back port connections, accommodating various setups. With an external zero adjustment screw and user-friendly panel or surface mounting, the installation and calibration process is straightforward, supporting quick setup and ongoing reliability.

Comprehensive Accessories for Seamless Integration

Each gauge is supplied ready for installation, complete with two 1/8 NPT plugs, two adapters to interface with rubber tubing, and flush mounting adapters. This ensures efficient integration into existing systems, while the clear, full-view acrylic lens guarantees easy readability.

FAQs of Dwyer USA Magnehelic Gauges 0 To 80 MM WC:

Q: How do I install the Dwyer Magnehelic Gauge for optimal operation?

A: You can mount the gauge on either a panel or surface using the provided mounting accessories. Side and back connection ports, with 1/8 NPT threading, allow for flexible plumbing. Ensure the gauge is level and securely mounted for accurate readings.

Q: What are the main applications of the Dwyer Magnehelic Gauge?

A: This gauge is ideal for HVAC systems, cleanroom monitoring, laboratory setups, filter monitoring, and broader building management systems. Its industrial-grade construction makes it suitable for demanding environments requiring precise differential pressure measurements.

Q: When should I use the zero adjustment feature?

A: The external zero adjustment screw allows you to re-zero the gauge when the unit is installed and at rest (no differential pressure applied). Regularly check zero before use, especially after relocation or if readings appear inaccurate to maintain optimal performance.

Q: Where should the Dwyer Magnehelic Gauge be placed for best accuracy?

A: Install the gauge where temperature variations are minimal (operating range: -7C to 60C), away from direct sunlight or vibration sources. Its best mounted vertically in easily accessible locations for monitoring and maintenance.

Q: What process does the gauge use to measure pressure?

A: The Magnehelic Gauge uses a diaphragm sensor that deflects in response to pressure changes. This mechanical movement drives the analog pointer across a calibrated scale, allowing precise analog display of low differential pressures in mm WC.

Q: How does using this gauge benefit my system monitoring?

A: Benefits include accurate, analog display of low-pressure variations, robust construction for longevity, clear full-view acrylic lens for easy reading, and ease of maintenance. It helps ensure optimal operation in ventilation, air flow control, and cleanliness monitoring.

Q: What should be done if the gauge reads abnormally or exceeds its overpressure limit?

A: If the gauge shows abnormal readings or is subjected to pressure exceeding its 15 psi (103 kPa) overpressure limit, inspect for installation errors or damage. Remove the gauge from operation, verify system integrity, and perform recalibration or replacement if necessary.

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