Calibration and Measurement Accuracy
CALIBRATION FORMULA
Door Opening
Formula
E1
Flow (CFM) = 43.73 x (Metering box pressure in pascals)
0.5
E2
Flow (CFM) = 20.72 x (Metering box pressure in pascals)
0.5
E3
Flow (CFM) = 10.07 x (Metering box pressure in pascals)
0.5
FLOW ACCURACY
±10% of reading when used with a 1% accurate pressure gauge (such as a DG-700) with a display resolution of 0.1 Pa (0.0004
inches of water)
FLOW RANGE
Door position E1: 44 - 124 CFM
Door position E2: 21 - 59 CFM
Door position E3: 10 - 28 CFM
DIMENSIONS (INSIDE)
16 in. L x 13 in. W x 8 in. D
WEIGHT
3 lbs. including handle
