Delta-T Devices SunScan SS1 User Manual page 62

Technical Reference
Maintenance
Batteries
Apart from the PDA, all the components of the SunScan system are
powered by alkaline 1.5V AA cells. Do not substitute other types of cell.
Checking the batteries
The SunScan system requires batteries within the probe, in the PDA, in
the BF5 and any BF-RL4 radio link if attached.

Always check battery levels before using the equipment.

Replace SunScan system batteries on a 6 to 12-month cycle.
Different components can exhaust their batteries at different rates.
SunScan Probe batteries
The probe is powered by four 1.5V AA size alkaline cells mounted within
the probe handle.

Select Utilities, About in SunData to display the SunScan battery
voltage.

Replace the batteries when the level has fallen near to 4.7 V level
for non-radio operation, or 5 V when used with a radio.
The probe circuit automatically "sleeps" when no readings are being
taken. There is no probe on/off switch.
Probe battery life
With a fresh set of batteries in the probe, you could take about 300,000
readings. Unused, the batteries would last for about 6-12 months.
Warning! If you are likely to store the probe for a long period, you should
remove the batteries.
Replacing the probe batteries
You must dismantle the probe handle. Disconnect the BF5 and the
probe's RS232 cable. The base-plate of the probe is secured to the
handle by 4 cross-head corner screws. Unscrew these to remove the
handle, whilst carefully supporting the probe. The battery holder can now
be prised out of its compartment, and the batteries changed.
62  Technical Reference
SS1 User Manual v3.3