Installation & Operation Manual - Model AVC6000
Contents of this Manual are Subject to Change Without Notification
Page 39
6.5.4.2.6 Face Velocity Verification
The AVC Controller continuously calculates the face velocity using the real-time fume hood
exhaust airflow and the total open area. The FHM Module provides personnel working near the
fume hood with an indication of the average face velocity in addition to providing audible and
visual alarm indicators and the ability to activate the purge function in case of emergency. Prior
to commissioning the fume hood, the face velocity displayed by the FHM should be verified by
performing a field measurement taken in accordance with ANSI/ASHRAE Standard 110.
6.5.4.2.6.1 Face Velocity Adjustment
The face velocity reading can be correlated to a field measurement by
using the “Face Velocity
Adjust”
calibration tool which can be accessed under the Tools menu or by right-clicking on the
Face Velocity Gauge which is located in the lower right corner of the dashboard.
After the calibration process has been completed, verify the face velocity is within
acceptable limits by repeating the face velocity measurement.
Field measurement entered here
Parameters captured during the
calibration process which can be
saved to a .csv file for record