DS/EN ISO 9300:2007
Measurement of gas flow by means of critical flow Venturi nozzles

Standard No.

DS/EN ISO 9300:2007

Release Date

2007

Published By

Danish Standards Foundation

Latest

DS/EN ISO 9300:2007

Replace

DS/EN ISO 9300:1995

Scope

This International Standard specifies the geometry and method of use (installation in a system and operating conditions) of critical flow Venturi nozzles (CFVN) used to determine the mass flow-rate of a gas flowing through a system. It also gives the information necessary for calculating the flow-rate and its associated uncertainty.It is applicable to Venturi nozzles in which the gas flow accelerates to the critical velocity at the throat (this being equal to the local sonic velocity), and only where there is steady flow of single-phase gases. At the critical velocity, the mass flow-rate of the gas flowing through the Venturi nozzle is the maximum possible

DS/EN ISO 9300:2007 history

• 2007 DS/EN ISO 9300:2007 Measurement of gas flow by means of critical flow Venturi nozzles
• 1995 DS/EN ISO 9300:1995 Measurement of gas flow by means of critical flow Venturi nozzles