BS ISO 27327-2:2014

Foreword
Introduction
1 Scope
2 Normative references
3 Terms, definitions, symbols and units
4 Limitations on use
5 Measurement uncertainty
6 Instrumentation
7 Test procedure
8 Acoustic environment
9 Air curtain unit installation conditions
10 Air curtain unit operating conditions
11 Test setup
12 Information to be recorded
13 Calculations and evaluations
14 Test report
Annex A (normative) - Effect of
        rotational speed changes
Annex B (normative) - Uncertainty analysis
Annex C (normative) - Calibration of
        reference sound source
Annex D (informative) - Filter weighted
        measurements
Annex E (normative) - Room qualification
        for sound sources with broadband sound
Annex F (informative) - Room qualification
        for sound sources with pure tones/narrow-band
        sound
Bibliography

Describes the determination of the acoustic performance of air curtain units.

This part of ISO27327 deals with the determination of the acoustic performance of air curtain units. In addition, it can be used to determine the acoustic performance of air curtain units combined with an ancillary device.