This International Standard establishes an engineering standard by which to obtain the ventilation rate/specific airflow rate, using a tracer gas in a building space, which is considered to be of a single zone.The measurement method is valid in spaces where the combined conditions concerning the uniformity of tracer gas concentration, measurement of the exhaust gas concentration, effective mixed zone and/or fluctuation of ventilation are satisfied.This International Standard provides three measurement methods using a tracer gas: (1) concentration decay method, (2) continuous dose method, and (3) constant concentration method.
EN ISO 12569:2012 history
2017EN ISO 12569:2017 Thermal performance of buildings and materials - Determination of specific airflow rate in buildings - Tracer gas dilution method
2012EN ISO 12569:2012 Thermal performance of buildings and materials - Determination of specific airflow rate in buildings - Tracer gas dilution method
2000EN ISO 12569:2000 Thermal Insulation in Buildings - Determination of Air Change in Buildings - Tracer Gas Dilution Method (Remains Current)