Dwyer 2220 Magnehelic Differential Pressure Gauge 0-20 PSI

About Dwyer 2220 Magnehelic Differential Pressure Gauge 0-20 PSI

Dwyer 2220 Magnehelic Differential Pressure Gauge 0-20 PSI

Model: 2220 Differential Pressure Gage,Range 0-20 PSI,Minor Divisions .50,MP Option Standard.

Bezel provides Flange For Flush Mounting in Panel. Clear Plastic Face is Highly Resistant to Breakage. Provides Undistorted Viewing of Pointer and Scale.

Dwyer 2220 MAGNEHELIC, DIFFERENTIAL PRESSURE GAUGE, 0-20 PSI

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.

Precision Differential Pressure Measurement

Engineered for accuracy, the Dwyer 2220 Magnehelic Gauge delivers immediate and reliable readings for pressures up to 20 PSI. Its mechanical diaphragm ensures a prompt response, making it suitable for monitoring air and compatible gases in demanding industrial environments. The analog display features high legibility and straightforward operation.


Rugged Construction for Industrial Applications

Built with a corrosion-resistant die-cast aluminum case and a clear acrylic window, this gauge is designed to withstand rigorous conditions. Overpressure protection up to its maximum rating ensures reliability and safety without compromising calibration, while the brass pressure connections and silicone rubber seal provide leak-proof performance.


Flexible and Convenient Installation

Designed for easy mounting in vertical orientation, the Dwyer 2220 can be flush or surface mounted for adaptability in various setups. The 1/8 NPT brass connections and supplied mounting hardware make installation straightforward, while the external zero adjustment simplifies calibration maintenance.