SV 104 USER'S MANUAL_
DRAFT
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6
SV104 MAINTENANCE
6.1
General recommendations for use
Use only high quality USB cables, such as SC 156. Many poor quality cables do not ensure
low resistance of the cable, thus disabling proper charging of the internal cells
It is not recommended to leave the instrument in direct sunlight conditions for prolonged
periods of time. Extended exposure such as behind the car window may affect
the performance.
To improve accuracy of remaining battery life indicator, run the dosimeter until it is fully
discharged; then proceed with a full charge via the micro USB port. The procedure
is recommended before first use. Repeat this procedure every few months of use to maintain
more accurate current battery condition indication.
6.2
Cleaning
Few things to remember:
Every time the SV 104 gets too dirty, clean the surface of the dosimeter with damp soft cloth.
Pay special attention that the provided SA 122 windshield is clean because dirtiness can
affect the measurements. Take off the windshield, shake off any dirt, and clean it with damp
cloth. If necessary change the windshield to new one. The foam windshield is considered a
consumable item and will need replacing if it becomes lost or its condition deteriorates too
much. Packs of 3 replacement windshields are available under the part number
SA 122_3.
Pay special attention that the SV 27 microphone front part is clean because dirtiness can
affect the measurements. Avoid the small inlet hole getting too dirty. Clean carefully with a dry
and soft non-fraying cloth.
6.3
In situ calibration
It is advised to perform an acoustic calibration of the instrument each time before and after
the measurement run. A single calibration at the start of each day of use is usually sufficient for most
regulations. See 4.7 chapter for calibration details, please.
6.4
Periodic testing
The manufacturer’s recommended factory calibration interval is every
12 months
for
SV 104
to be confident in its continuing accuracy and compliance with the international specifications.
Notice:
Please contact your local SVANTEK distributor for further details on traceable
recalibrations that are recommended by most regulatory authorities.
