Standard method for measurement of flow liquid in pipes using orifice flow meters

Document Number: NL ASH 41 8 : 2006
Sector: Mechanical Systems and Components for General Use
TC: NL TC EO
ICS: 23.120 - 91.140.30
This standard applies to laboratory and field liquid flow measurement for testing heating, ventilating, air-conditioning, and refrigerating systems and components. This standard is restricted to applications where the entire flow stream of liquid enters and exits the liquid flowmeter in a liquid-only state during data recording with the following exception: a. This standard does not apply to liquid-phase refrigerant mass flow measurements where the liquid flow includes circulating lubricant. Those measurements are within the scope of ASHRAE Standard 41.10.