Using the A73x RTU
(samples/15 min)
No
No sensors
0.85
132
Low No
sensors
2.8
40
Heavy
No sensors
5
22
Low 3
4.2
26
Low
15
6.3
17
Heavy 15
9
12
Table 1:
A73x Device Operation Time
Note:
Low radio activity means that one base station and between one and three
A730MDs/A73xs or A730SDs are active on the same operating frequency as the
A73x remote station under test. Heavy radio activity means that approximately 30
devices are on the same channel. However, no routing is used. Table 1 does not
apply to the A733GSM/GPRS RTU.
However, if for some reason (by wearing out or accident) the battery loses its
capacity (noted in the software with repeated “Battery low” messages), it must be
replaced. Make sure, though, that the problem is really due to the battery and not
to a defective or dirty solar panel.
Adcon highly recommends that you check the solar panels’ state and clean them
often. The rain droplets can splash thin layers of soil on the panels, thus reducing
their power output. The surrounding vegetation can also lower the panels’
efficiency.
2.7.2 Changing the battery
If you have verified that the battery needs to be replaced, follow these steps to do
so:
1.
Open the lid by unscrewing the four screws in the corners of the A73x RTU,
then remove the lid as shown in Fig. 6.
Fig. 6:
Removing the A73x Lid
2. The battery pack is connected to the electronics board by means of a PCB
connector. Remove the battery pack’s plug from the PCB connector, as shown
in Fig. 7.
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