ASHRAE 41.8-1989

Standard 41.8-1989 — Standard Methods of Measurement of Flow of Liquids in Pipes Using Orifice Flowmeters
standard by ASHRAE, 1989

ASHRAE 41.10-2013

Standard 41.10-2013 — Standard Methods for Refrigerant Mass Flow Measurement Using Flowmeters (ASHRAE/ANSI Approved)
standard by ASHRAE, 2013