ASHRAE STD 41.2
Standard Methods for Air Velocity and Airflow Measurement
|Publication Date:||31 May 2018|
This standard applies to air velocity and airflow measurement for testing heating, ventilating, air conditioning, and refrigerating systems and components at pressures within the range of -25 to +25 kPa (-100 to +100 in. of water) referenced to atmospheric pressure.
This standard prescribes methods for air velocity and airflow measurement, including consideration of density effects.