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10.
DISPLAyING DATA LOGGER READOUT
1.
Start the Voltsoft software and connect the data logger to the computer. Follow the instructions in
the software manual (section 3).
2.
When you have finished reading data from the data logger, disconnect it from the USB port.
Keeping the data logger connected to the USB port of the computer for extended periods
can result in a premature discharge of the battery.
11.
CALIBRATION
The sound level meter corresponds to the European standard EN 61 672-1 for sound level meters.
To apply the device in line with the standard, it must be calibrated with the benchmark curve A (dBA)
prior to each measuring operation, meaning tested and if necessary matched with a sound calibrator
Class 2 acc. to IEC 60942. The accuracy must be checked again after each measuring operation.
Proceed as follows for calibration:
1.
Switch the sound level meter on and plug the microphone of the sound level meter into the opening
of the sound calibrator. Ensure a tight fit so that the calibration chamber in the sound calibrator
is sealed.
2.
Set the following parameters on the sound calibrator: 94dB at 1 kHz.
3.
Connect the data logger to your computer and display the readout of the measurements. The
measuring curve should now display a constant sound level of 94 dBA. If this is not the case, the
measuring device has to be calibrated.
Follow the software manual's instructions to calibrate the data logger.
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12.
INSERTING/REPLACING THE BATTERy
1.
With a pointed object (e.g. a small screwdriver or similar), open the casing. Lever the casing off in
the direction of the arrow.
2.
Pull the data logger from the casing.
3.
Turn the data logger around and insert the battery into the battery compartment observing the right
polarity. Observe of the polarity markings in the battery compartment.
4.
Slide the data logger back into the casing until it snaps into place. Now the data logger is ready
for programming.
•
The battery has to be changed when the red and green LED are flashing in ten
second intervals.
•
Data that is stored will not be lost for max. 30 minutes when changing the battery or
when a device failure occurs during the recording.
•
The life of the battery is approx. 200 hours.
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