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.

SN EN ISO 9300:2005 - Identical

UNE EN ISO 9300:2006 - Identical

SS EN ISO 9300 Ed. 2 (2005) - Identical

ISO 9300:2005 - Identical

NS EN ISO 9300 Ed. 2 (2005) - Identical

NF EN ISO 9300:2005 - Identical

UNI EN ISO 9300:2005 - Identical

I.S. EN ISO 9300:2005 - Identical

DIN EN ISO 9300 (2005-11) - Identical

ONORM EN ISO 9300:2005 - Identical

BS EN ISO 9300:2005 - Identical

NEN EN ISO 9300:2005 - Identical