SV 104A USER'S MANUAL_______________________________________________________
30
4.1
DOCK STATION Charging
The battery inside
SV 104A
uses lithium-ion technology which requires special consideration and handling
techniques due to the extr
emely high energy density (see “SPECIAL PRECAUTIONS WHEN USING AND
CHARGING LITHIUM BATTERIES
” clause on page 4).
Ensure the
SV 104A
is fully charged prior to use by placing it onto the docking station charger.
Ensure the power supply is connected and the supply is switched on.
SV 104A
will automatically turn on the
display during charging and present how much charge is within the instrument. The
SV 104A
will display ‘Fully
charged’ once charging is complete. This should take approximately 4 hours from a fully discharged state. A
charging time of about 1 hour will be sufficient to perform greater than 10 hours of measurement. A fully
charged instrument holds enough charge to run for approximately 48 hours.
Note that once disconnected from docking station, the dosimeter will automatically switch off. If put again
onto the docking station the internal battery is float charged. This keeps the battery performance in steady
condition. If the battery is fully discharged prior to being placed on a charger, it trickle charges for a maximum
1h time prior to the fast charge cycle, this prevents damage to the batteries.
The number of hours you have used your dosimeter from your last charge will impact your total charge
time. For example, if the battery clock indicator displays 10 hours remaining on the battery and you wish to
charge the battery, the approximate charging time is 3 hours.
Charger LED status indication
Description
OFF
Dock station is not powered on.
GREEN
Indicates the
dock station is powered on and fully operational
.
RED
Dock station is powered on, but not fully operational
Table 4-1
Charger instrument LED status description
Figure 4-1
5-bay docking station (SB 104A-5)
Note: To charge a fully discharged battery, it would take approximately 4 hours.
Note: To charge multiple dosimeters at the same time via the docking station, ensure your
12V AC/DC power supply such as the SA 33 is capable in terms of providing enough current performance.
Current estimation: Assume the current consumption on 0.24A level, and calculate required minimum power
supply current (5 x 0.24A = 1.2A).
Power wattage estimation: With nominal voltage of 12V the power supply wattage should be minimum 2.88W
per dosimeter (5 x 2.88W = 14.4W).
