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Model : ABH-4225
* Air velocity : 0.4 to 30.0 m/s, ft/min., km/h, mile/h, knots.
* Barometer : 10 to 1100 hPa, mmHg, inHg.
* Humidity : 10% to 95% RH, Dew.
* Temperature : 0 to 50 oC, oC/oF.
* All in one, hand held type.
* Vane probe, high reliability.
* Hold, Record ( max., min. ).
* DC 1.5V battery ( UM-4, AAA ) x 4.
* Price Rs 1000
How is CFM air flow calculated?
To calculate Air Flow in Cubic Feet per Minute (CFM), determine the Flow Velocity in feet per minute, then multiply this figure by the Duct Cross Sectional Area
Multiplying air velocity by the area of a duct allows you to determine the air volumeflowing past a point in the duct per unit of time. Volume flow is generally measuredin cubic feet per minute (CFM). Air velocity is measured by sensing the pressure that is produced through the movement of the air.
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