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ANSI/ASHRAE 41.2-2026

Standard Methods for Air Velocity and Airflow Measurements

Prescribes methods for air velocity and airflow measurement, including consideration of density effects. 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 kPa to +25 kPa (–100 in. of water to +100 in. of water) referenced to atmospheric pressure. Includes airflow mixing methods to obtain more uniform temperatures and velocities. Dual units of measurement.

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American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc. [ashrae]

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