Magnehelic® Differential Pressure Gages- Series 2000

* Low temperature models available as special option.
+ For applications with high cycle rate within gage total pressure rating next higher rating is recommended.
See Medium and High pressure options lower left.

Transparent overlays
Furnished in red and green to highlight and emphasize critical pressures.

Adjustable signal flag
Integral with plastic gage cover; has external reset screw. Available for most ranges except those with medium or high pressure construction. Can be ordered with gage or separately.

LED Setpoint Indicator
Bright red LED on right of scale shows when setpoint is reached. Field adjustable from gage face, unit operates on 12 - 24 VDC Requires MP or HP style cover and bezel.

Portable units
Combine carrying case with any Magnehelic gage of standard range (not high pressure) includes 9 ft. of 3/16" I.D. rubber tubing, stand- hang bracket, and terminal tube with holder.

Air filter gage accessory package
Adapts any standard Magnehelic for use as an air filter gage. Includes aluminum surface mounting bracket with screws, two 5 ft lengths of 1/4" aluminum tubing, two static pressure tips and two molded plastic vent valves, integral compression fittings on both tips and valves.

1. Bezel provides flange for flush mounting in panel.
2. Clear plastic face is highly resistant to breakage. Provides undistorted viewing of pointer and scale.
3. Precision litho-printed scale is accurate and easy to read.
4. Red tipped pointer of heat treated aluminum tubing is easy to see. It is rigidly mounted on helix shaft.
5. Pointer stops of molded rubber prevent pointer over-travel without damage.
6. "Wishbone" assembly provides mounting for helix, helix bearings and pointer shaft.
7. Sapphire bearings are shock-resistant mounted; provide virtually friction-free motion for helix. Motion damped with high viscosity silicone fluid.
8. Zero adjustment screw is conveniently located in plastic cover, accessible without removing cover. "O" ring seal provides pressure tightness.
9. Helix is precision milled from an alloy of high magnetic permeability, deburred and annealed in a hydrogen atmosphere for best. magnetic qualities. Mounted in jeweled bearings, it turns freely to align with magnetic field of magnet to transmit pressure indication.
10. Alnico magnet mounted at one end of range spring rotates helix without mechanical linkages.
11. Calibrated range spring is a flat leaf of Swedish spring steel in temperature compensated design. Small amplitude of motion assures consistency and long life. It reacts to pressure on diaphragm. Live length adjustable for calibration.
12. 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.
13. Die cast aluminum case is precision made. Iridite-dipped to withstand 168 hour salt spray test. Exterior finished in baked dark gray hammerloid. One case size used for all standard pressure ranges, and for both surface and flush mounting.
14. Blowout plug of silicone rubber protects against overpressure on 15 PSIG rated models. Opens at approximately 25 PSIG.
15. "O" ring seal for cover assures pressure integrity of case.

The models listed below will fulfill most requirements. Custom models can be provided for OEM customers. For special units with scales reading in ounces per square inch, inches of mercury, other metric units, etc., contact the factory.