5. Remove the lithium battery by gently prying it out with a small flat-bladed screwdriver.
Replace it with a new battery.
6. Reassemble the datalogger. Take particular care to ensure the canister is reseated tightly
into the connectors by firmly pressing them together by hand.
8.5 Electrostatic discharge and lightning
protection
WARNING:
Lightning strikes may damage or destroy the datalogger, associated sensors and power
supplies.
Electrostatic discharge (ESD) can originate from several sources, the most common and
destructive are primary and secondary lightning strikes. Primary lightning strikes hit
instrumentation directly. Secondary strikes induce voltage in power lines or wires connected to
instrumentation. While elaborate, expensive, and nearly infallible lightning protection systems
are on the market, Campbell Scientific, for many years, has employed a simple and inexpensive
design that protects most systems in most circumstances. The system consists of a lightning rod,
metal mast, heavy-gauge ground wire, and ground rod to direct damaging current away from the
8. Maintaining your datalogger 107
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