DS/EN ISO 9300-2007

Measurement of gas flow by means of critical flow Venturi nozzles

DS/EN ISO 9300-2007 发布历史

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由丹麦标准化协会 DK-DS 发布于 2007-06-28，并于 2007-06-28 实施。

DS/EN ISO 9300-2007在国际标准分类中归属于: 17.120.10 封闭管道中流量的测量。

DS/EN ISO 9300-2007的历代版本如下：

• 1995年06月16日 DS/EN ISO 9300-1995 利用临界流文丘里喷嘴测量气流
• 2007年06月28日 DS/EN ISO 9300-2007

DS/EN ISO 9300-2007 由 DS/EN ISO 9300-1995 变更而来。

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标准号

DS/EN ISO 9300-2007

发布日期

2007年06月28日

实施日期

2007年06月28日

废止日期

无

国际标准分类号

17.120.10

发布单位

DK-DS

被代替标准

DS/EN ISO 9300-1995

适用范围

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