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BACnet PTEC LCM - OAVS with Damper Supply, Venturi Exhaust

The OAM (Figure 2) contains the air velocity sensor (a specialized differential pressure transducer), V/F
conversion circuitry and solenoid for auto-zero function. Advanced digital signal processing produces a
highly accurate reading of even the noisiest flow signals.
The auto-zero solenoid connects to the air velocity pressure transducer's inlet ports to enable automatic
periodic re-calibration. This re-calibration ensures accurate, drift-free airflow measurement. Automatic re-
calibration of the differential pressure transducers occurs upon system power-up and when airflows are
stable with frequency selectable from 1 to 6 times a day.

Profile(s)BACnet Application Specific Controller
BTL ListedFebruary 2015






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