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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
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The purpose of this Standard is to establish recommended practices for the measurement of flow of liquids in pipes. It shall also establish the standard technique to be used for the calibration of other instruments more convenient to use.