Internal Battery - Campbell CR300 Series Product Manual

WARNING:
Do not completely seal the enclosure if lead-acid batteries are present; hydrogen gas
generated by the batteries may build to an explosive concentration.
The following details a typical installation using a Campbell Scientific enclosure. The data logger
has mounting holes through which small screws are inserted into nylon anchors in the backplate.
1. Insert the included nylon anchors into the backplate. Position them to align with the
mounting holes on the base of the data logger.
2. Holding the data logger to the backplate, screw the screws into the nylon anchors.
See also Physical specifications

16.4 Internal battery

The lithium battery powers the internal clock when the data logger is not powered. The internal
lithium battery life is extended when the data logger is installed with an external power source. If
the data logger is used in a high-temperature application, the battery life is shortened.
To prevent clock and memory issues, it is recommended you proactively replace the battery every
5 years, or more frequently when operating continuously in high temperatures. For example,
replace at least every 2 years if operating continuously at 80 °C.
NOTE:
The battery is replaced during regular factory recalibration, which is recommended every 3
years. For more information, see
When the lithium battery is removed (or is depleted and primary power to the data logger is
removed), the CRBasic program and most settings are maintained, but the following are lost:
Temporary program memory (current values for variables).
l
Routing and communication logs (relearned without user intervention).
l
(p. 184).
Data logger calibration (p. 103).
16. CR300 series maintenance 109