EN ISO 9300:2005
Measurement of gas flow by means of critical flow Venturi nozzles (ISO 9300:2005)
- Standard No.
- EN ISO 9300:2005
- Release Date
- 2005
- Published By
- European Committee for Standardization (CEN)
- Status
- 2022-09
- Replace By
- EN ISO 9300:2022
- Latest
- EN ISO 9300:2022
- 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
EN ISO 9300:2005 history
- 2022 EN ISO 9300:2022 Measurement of gas flow by means of critical flow nozzles (ISO 9300:2022)
- 2005 EN ISO 9300:2005 Measurement of gas flow by means of critical flow Venturi nozzles (ISO 9300:2005)
- 1995 EN ISO 9300:1995 Measurement of Gas Flow by Means of Critical Flow Venturi Nozzles (ISO 9300 : 1990)
