Acoustics. Hearing protectors - Measurement of insertion loss of ear-muff type protectors using an acoustic test fixture Ingestion-build-59651 9 Tunnel and mixed tunnel

9 Tunnel and mixed tunnel slides

- Quality control project managers

for installation in accordance with the recommendations of BS 8524-2

PD CEN/TS 17286 is suitable for both short-term (periodic) measurements and long-term (continuous) monitoring using sorbent traps

NOTE: This part of ISO 898 does not specify requirements for properties such as:

Acoustics. Hearing protectors - Measurement of insertion loss of ear-muff type protectors using an acoustic test fixture Ingestion-build-59651 9 Tunnel and mixed tunnel1 Scope This part of ISO 4869 specifies a method for measuring the insertion loss of ear muff type hearing protectors using an acoustic test fixture. The method is applicable to the investigation of production spreads of performance as part of type approval or certification procedures, and to the investigation of the change of performance with age. It is intended to ensure that ear muffhearing protector samples submitted for subjective testing of