Dwyer 2002AV Magnehelic Differential Pressure Gauge, Type, 0 to 2" WC

The Magnahelic guage is the industry standard to measure fan and blower pressures, filter resistance, air velocity, furnace draft, pressure drop across orifice plates, liquid levels with bubbler systems, and pressures in fluid amplifier or fluidic systems. The gauge's motion is damped with high-viscosity silicone fluid. The zero adjustment screw is conveniently located in the plastic cover, and is accessible without removing the cover. O-ring seal provides pressure tightness. Rugged design resists shock, vibration, and overpressure. The helix is precision-made from an alloy of high magnetic permeability. Mounted in jeweled bearings, it turns freely, following the maganetic field to move the pointer across the scale. The samarium cobalt magnet is mounted at one end of the range spring and rotates the helix without mechanical linkages. SpecificationsDial Size (mm): 102 Dial Size (in): 4 Max Pressurein WC: 2 Min Pressurein WC: 0 Accuracy: ±2% full-scale Case: Aluminum Display: analog dial Lens Material: acrylic Media Compatibility: Gases and liquids compatible with wetted materials Process Connection: 1/8 (in) NPT Unit Of Measurement: WC2882106846261Wetted Materials Aluminum2882116846261Universal Description Magnehelic Differential Pressure Gauge, Type , 0 to 2 WC Universal Guarantee: 1 year

• The industry standard in indicating low air or gas pressures of positive, negative, or differential pressures
• Large, easy-to-read 4" (102 mm) dial
• No manometer fluid to evaporate, freeze, or cause toxic or leveling problems