DIN EN 61672-2:2014-07

This standard provides details of the tests necessary to verify conformance to all mandatory specifications given in DIN EN 61672-1 for time-weighting sound level meters, integrating-averaging sound level meters, and integrating sound level meters. Pattern-evaluation tests apply for each channel of a multi-channel sound level meter, as necessary. Pattern-evaluation tests and test methods are applicable to class 1 and class 2 sound level meters. The aim is to ensure that all laboratories use consistent methods to perform pattern-evaluation tests. This standard contains the German version of the European Standard EN 61672-2:2013. The International Standard IEC 61672-2:2013 which forms the basis of this standard has been prepared by Technical Committee 29 "Electroacoustics" of the IEC (secretariat: DS, Denmark) with the German collaboration. Regarding the German collaboration, Joint Working Committee NA 001-01-03 GA (NALS/DKE A 3) "Schallmessgeräte" ("Sound measuring instruments") is responsible under chairmanship of the Acoustics, Noise Control and Vibration Engineering Standards Committee (NALS) at DIN and VDI. The following modifications have been made with respect to DIN EN 61672-2:2003-10: a) new conformity criterion in the form of acceptance limits and the maximum permitted measurement uncertainty of the testing introduced; b) cited standards updated, in particular reference to DIN EN 62585 has been made.