What are the baseline measurement requirements specified in ISO 9972:2015?

The baseline measurement requirements specified in ISO 9972:2015 dictate that ten values should be taken at 30-second intervals. This protocol ensures the collection of sufficient data to achieve a reliable and accurate representation of the building's performance concerning airtightness.

Taking ten measurements allows for the assessment of the stability and consistency of the airflow during the testing period. The choice of 30-second intervals is critical as it provides a balance between capturing enough data points while allowing sufficient time for the system to stabilize between readings. This approach enhances the reliability of the results and helps to account for any fluctuations that may occur in the pressure conditions.

Understanding these requirements is essential for practitioners in the field to ensure compliance with recognized standards and to provide credible test results.