Historical
ANSI/ASHRAE Standard 125-2016
Method of Testing Thermal Energy Meters for Liquid Streams in HVAC Systems
The test methods, procedures, and facility descriptions in this standard are intended for use in determining measurement accuracy, pressure losses, service flow rate limits, temperature difference limits, and reliability effects of mounting attitude.
American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc. [ashrae]