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NOTE: Rechargeable batteries will provide substantially fewer hours
of operation and will self-discharge while the instrument is in storage.
Users should also be aware that use of rechargeable batteries will void
the CSA approval of the MiniBump for intrinsic safety.
Microprocessor-Based Circuitry
When powered-up, the microprocessor checks for what type of generating
source is inserted, the gas type and concentration as well as if the
source is a “bump” type source and the remaining source life. It also
monitors battery life and indicates when either a low battery or exhausted
source condition occurs. The circuit board is attached directly to the
bottom case via solder joints to the battery terminals. If damaged or
inoperable, it should be replaced as part of the case rather than removed
from these terminals.