MAGNEHELIC®, PHOTOHELIC®, MINIHELIC®, and DIGIHELIC®
Differential Pressure Gauges/Controller

Measure and control both positive and negative low air or gas pressures

Provide an ideal way of monitoring and controlling the positive pressure differential required for cleanrooms

Enable you to meet FED STD 209E regarding cleanroom pressure

Ideal for measuring differential pressure in gloveboxes and air flow in exhaust hoods

MAGNEHELIC® Principle ensures wear-free accuracy within 2% of full scale

Resists shock and vibration

Available in a number of pressure gauges to suit a wide range of applications, such as gauging air filters, monitoring air conditioning systems, and measuring static air pressure and air vehicles

If your facility incorporates a laminar flow cleanroom, these MAGNEHELIC® and PHOTOHELIC® differential pressure gauges can help you maintain the positive pressure necessary to block inrushing contaminants that can damage sensitive materials and operations. In doing so, they also help to meet the requirements and recommendations set forth in FED STD 209E which specifies that a minimum positive pressure of 0.05" of water differential be maintained between the cleanroom and adjacent areas.

Chatterless, Wear-Free Accuracy
These gauges incorporate an exclusive MAGNEHELIC® Principle that eliminates wear, backlash, and hysteresis. The result is a remarkably high standard of accurate, dependable gauge performance at a modest price.

This MAGNEHELIC® Principle is a method of transmitting the effects of changes in air pressure from a diaphragm to an indicating pointer—by means of magnetic linkage and without the use of gears or other direct mechanical linkages. This system avoids wear and physical contact, which might destroy the accuracy and sensitivity of the instrument. It delivers accuracy to within 2% of full scale.