Airflow sensing range: 250 Pa (0…1” WC)

Accuracy: 1% of reading or 0.25 Pa (0.001” WC), whichever is greater

Normal operating range: 0...250 Pa (0...1" WC)

Over-range detection: The APS provides a separate over-range detection allowing the controller to perform the correct action at a higher airflow.

  • 250...274 Pa (1...1.1" WC) : over normal operating range; still supported from the device
  • above 274 Pa (1.1" WC): value is out of range
  • above 24,000 Pa (96" WC): may cause equipment damage

Under-range detection: The APS provides a separate under-range detection allowing the controller to perform the correct action at a lower airflow.