Used to measure fan and blower pressures, filter resistance, air velocity, furnace draught, pressure drop across orifice plates, liquid levels with bubbler systems, pressures in fluid amplifier or fluidic systems; to check gas-air ratio controls, automatic valves, and monitor blood and respiratory pressures in medical equipment.
Magnehelic - More than 70 ranges, from 0-0.25"WG to 0-205kPa. Zero centre from .25-0-.25"WG to 15-0-15"WG. Low (to 105kPa)medium (to 240kPa) and high total internal pressure styles to 550kPa. Accuracy +/- 2% of scale
Capsuhelic - More than 60 ranges, from 0-50"WG to 0-2000kPa. Zero centre from 1-0-1"WG to -15-0-15"WG. Senstitive to low differential pressures yet withstands internal pressures to 3,500kPa. Accuracy +/- 3% of full scale