DIN IEC 60651:1981-12
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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SOUND LEVEL METERS
01-05-1994
12-01-2013
Deals with sound level meters of four degrees of precision designated Types 0, 1, 2 and 3. Specifies the following characteristics: directional characteristics, frequency-weighting characteristics, time-weighting, detector and indicator characteristics, sensitivity to various environments. Establishes electrical and acoustical tests to verify compliance with characteristics specified and describes the method for absolute sensitivity calibration.
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