SV 104A USER'S MANUAL_______________________________________________________
75
7
SV 104A MAINTENANCE
7.1
General recommendations for use
7. 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
8. 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.
9. 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.
7.2
Cleaning
Few things to remember:
•
Every time the
SV 104A
gets too dirty, clean the surface of the dosimeter with damp soft cloth.
•
Pay special attention that the provided
SA 122A
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 122A_3.
•
Pay special attention that the
ST 104A
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.
7.3
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 chapter 4.7 for calibration details, please.
7.4
Periodic testing
The manufacturer’s recommended factory calibration interval is every
12 months
for
SV 104A
to be confident in its continuing accuracy and compliance with the international specifications.
Note: Please contact your local SVANTEK distributor for further details on traceable
recalibrations that are recommended by most regulatory authorities.
