m) Noise Level Measurement
The sound level measurement is used as an orientation measurement to identify sources of
sound. Evaluating measurement for documentation, etc. is not possible. The sound level is
measured linearly (characteristic “C”), i.e. all sounds (low and high ones) are assessed equally.
Thus, you will receive frequency-independent measured values that make comparison easier.
The measuring aperture for sound is at the upper left (16). During measurement, the measuring
device should be aligned at a right angle to the sound source.
Always wear hearing protection when working in loud environments to prevent dam-
age to your hearing.
Proceed as follows for the measurement:
• The measuring leads are not required.
• Turn the DMM on and select measuring function
“dBC”.
• Align the DMM with the measuring aperture (16)
towards the sound source. Min. distance 1 m.
• The measuring value is shown on the main dis-
play.
• Switch off DMM after measuring.
Strong wind (> 10 m/s) may negatively
influence the measuring result.
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