Cubic feet per minute (CFM)
People also ask
How do you measure air flow rate?
You have measured the air flow, cross-sectional net area and multiplied them together for a flow rate. Modern air measurement instruments like handheld anemometers which offer digital read outs in cubic feet per minute: a self-contained calculator to save time and frustration for HVAC professionals.
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.
What is the air flow rate for an HVAC system?
The Air flow rate for an HVAC system is defined as the volume of air being delivered at some speed or rate, typically cubic feet per minute (CFM) or m/sec (meters per second), ft/sec (feet per second), or ft/min (feet per minute).
Is it possible to measure air flow with anemometer?
Measuring air flow with anemometers has been limited in the past by time. The newest microprocessor-based instruments complete duct hvac air flow measurement data collection accurately even before the patience of the HVAC tech wears out. How to measure air velocity in a duct?