1.3.2 PCR-A
1.3.2.1
Airflow Velocity Test
Put the anemometer on a plane that is 150 mm (6 in.) from the filter face, and measure the airflow using the
grid below:
Distance from walls = a (mm) (in)
Distance apart = x (mm) (in)
Distance from walls = b (mm) (in)
Distance apart = y (mm) (in)
Average Velocity: m/s (fpm)
Maximum Deviation: m/s (fpm) = %
Acceptance: 0.275 – 0.325 m/s (55 – 65 fpm)
Deviation Acceptance: 20%
Result: Pass / Fail
Actual motor voltage for nominal airflow:
Note: From factory, both True RMS and Averaging motor voltage are given. If your voltmeter has
“True RMS” written on it, use the True RMS voltage given here, for new cabinet installation. If
“True RMS” is not written there, it’s an averaging meter, so use the Averaging Voltage
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