SR EN ISO 9300:2006

Measurement of gas flow by means of critical flow Venturi nozzles (ISO 9300:2005)

ISO 9300:2005 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.

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General information

Status : Withdrawn
Approval date : 2/28/2006
Publish date : 3/2/2006
Withdrawal date : 7/29/2022
Number of pages : 44
ICS : 17.120.10 Flow in closed conduits
Technical Committee : 109 - Measurement of fluid flow

Relations with other standards:

Replaces SR EN ISO 9300:1997
Replaced by SR EN ISO 9300:2022