Acoustics. Laboratory measurement procedures for ducted silencers and air-terminal units. Insertion loss, flow noise and total pressure loss Ingestion-build-137917 If applied in conjunction with

If applied in conjunction with ISO 18674‑5

with the communication and interworking of sensors

— methods not corrected for systematic effects in intended use deliberately taking into account a bias

This International Standard does not deal with the therapeutic virtues supposed to be offered by thalassotherapy nor does it cover decisions that correspond to the medical profession

BS EN 61987-11 lays down the framework for further parts of IEC 61987 in which complete LOPs for device types measuring a given physical variable and using a particular measuring principle will be specified

Acoustics. Laboratory measurement procedures for ducted silencers and air-terminal units. Insertion loss, flow noise and total pressure loss Ingestion-build-137917 If applied in conjunction with1 Scope This International Standard specifies methods for determining the insertion loss, in frequency bands, of ducted silencers with and without airflow, the sound power level, in frequency bands, of the flow noise (or regenerated sound) generated by ducted silencers, the total pressure loss of silencers with airflow, and the transmission loss, in frequency bands, of air terminal units. The measurement procedures are intended for laboratory