24 Specifications and Operation DATAPAQ TP3
the logger’s operating temperature (i.e. the temperature of the logger itself)
does not exceed 55°C/131°F.
For alkaline batteries, the battery-charge level displayed by Insight (p. 19) will
be valid only if Duracell or other quality batteries are fitted. Using inferior batteries
may cause misleading percentages to be shown.
Life of Alkaline Batteries
The data below can serve as a guide – though the values given are no more than
an indication of the battery life that can be expected. See p. 19 for general
considerations that affect actual battery life.
No. of
Channels
Sample
Interval
(sec.)
Logger
Temperature
Battery Life (hrs)
No Radio
Telemetry
Radio
Telemetry Used
10 3 25°C/77°F – –
10 3 70°C/158°F – 150
10 60 25°C/77°F – –
10 60 70°C/158°F 450 –
20 3 25°C/77°F – –
20 3 70°C/158°F – 210
20 60 25°C/77°F – –
20 60 70°C/158°F 370 –
20 180 25°C/77°F – –
20 180 70°C/158°F – 420
Replacing Alkaline Batteries
Carry out as follows.
1. Ensure the logger is powered off: press green and red buttons together,
and hold for 5 seconds.
2. On the side of the logger, remove the single screw securing the battery-
compartment door. See photo, p. 11.
3. Turn the logger to let the old batteries slide out of the housing, one at a
time, and dispose of them appropriately (see p. 34).
4. Slide new batteries into the housing, one at a time, observing polarity.
Check that you are using the correct battery type for the battery housing
fitted. If in doubt, remove the housing (see p. 23) and check the label on it.
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