Best answer


Cubic feet per minute (CFM)

People also ask


  • What is airflow and how is It measured?

  • Airflow can also be described in terms of air changes per hour (ACH), indicating full replacement of the volume of air filling the space in question. The instrument that measures airflow is called an airflow meter. Anemometers are also used to measure wind speed and indoor airflow.

  • How do you measure air velocity and flow rate?

  • Some instruments can measure both air velocity (air speed) and air flow rate (air quantity). Air flow rate is measured by calculating an average velocity for the conduit of interest, and then, multiplying this velocity by the cross sectional area of the duct at the measurement location.

  • How do you measure air flow in Conduit?

  • Definition of Air Flow Measurement. Air flow rate is measured by calculating an average velocity for the conduit of interest, and then, multiplying this velocity by the cross sectional area of the duct at the measurement location. The air velocity value may estimated using a single reading, or a survey across the duct at a station.

  • What is the normal range of airflow rate reading?

  • Starting Threshold: 1.75 mph Reading Rate: 1 reading every second to 1 every 24 hours. – Omega, cited in detail at AIR FLOW CFM DEVICE SUPPLIERS. Above: the Dwyer Instruments FLST airflow rate monitoring device intended for monitoring air flow rates in an HVAC duct system.