Range Inches of Water: 0 - 1.0, Minor Divisions: 0.02
Magnehelic gage, for high accuracy--guaranteed within 2% of full scale--and for the wide choice of 81 models available to suit the needs precisely, Using Dwyer's simple, frictionless Magnehelic gage movement, it quickly indicates low air or non-corrosive gas pressures--either positive, negative (vacuum) or differential., The design resists shock, vibration and over-pressures., No manometer fluid to evaporate, freeze or cause toxic or leveling problems. It's inexpensive, too., It checks gas-air ratio controls and automatic valves, and monitors blood and respiratory pressures in medical care equipment.
Measure both pressure and air velocity, Read the red figures directly in feet per minute of velocity - from 400 to 10,000 fpm No conversion tables needed for air at standard conditions., Read the black figures in inches of water column air pressure - from 0 to 10" w.c., The No. 400 is used to balance air conditioning systems, measure pressure drop across filters, and test fan and blower discharge and inlet pressures, as well as air velocity in ducts., It offers the convenience of a dual purpose instrument - plus high accuracy on easy-to-read scales., The Series 400 includes "leveling" adjustment and glass bubble level, which makes it a versatile, all around manometer for the air conditioning and balancing contractor or industrial plant., Kit includes:, No. 400 Air Meter and all accessories.