ÖNORM EN ISO 9300:2023 02 15
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Measurement of gas flow by means of critical flow nozzles (ISO 9300:2022)
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English
15-02-2023
This document specifies the geometry and method of use (installation in a system and operating conditions) of critical flow nozzles (CFNs) used to determine the mass flow rate of a gas flowing through a system basically without the need to calibrate the CFN.
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