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You can return your used batteries and storage batteries free of
charge either to our subsidiaries or to our central office in Hir-
schau or reusable-waste facilities which are obliged to take back
old batteries.
Make your contribution to environmental protection!
Commissioning
Power switch (green rubber key) (4)
By means of this key, the device can be switched on/off.
Measuring range selector switch (5)
By sliding the measuring range selector switch (5) you can select the individual mea-
suring functions.
Measuring the Sound Level
The sound level measurement is intended for comparative measurements for the
domestic use and is not appropriate for the professional use.
The measurement can be performed according to valuation curve A (adapted to the
human hearing) or C (linear).
Outdoors, the windbreaker should be attached to the microphone in order not to fal-
sify the measurement by the sound of the wind. Indoors, the windbreaker should be
detached.
Attention!
Be careful with ambient noise. Your hearing might be
damaged. Always use hearing protection in noisy envi-
ronment!
For this measurement, please proceed as follows:
- Switch the device on by pressing the green key.
- Switch the measuring range selector switch (5) to position "dB".
- Turn the measuring instrument with the microphone (1) in direction
of the sound source to be measured.
TIP: You can obtain the best measuring results if you put the mea-
suring instrument on a fix surface and if you are at a distance of
approx. 1 m. Thus, the course of the acoustic waves is not influen-
ced. The distance between the measuring instrument and the
sound source should be 1 m and more.
