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Sonde
Install or Replace EXO 2 Batteries
EXO2 water quality sondes use four (4) D-cell batteries as a power source. Using alkaline batteries, users can
expect approximately 90 days of deployment from a fully loaded sonde that samples once every 15 minutes.
However, deployment times may vary greatly depending on water temperature, sampling rate, sensor payload,
wiper frequency, and brand of battery. *See battery life specication, next page.
1 Loosen battery cap.
Start with a clean and dry sonde. Slide the sonde tool’s
smaller opening over the battery cap on top of the
EXO2. Using the tool as a lever, rmly turn the tool
counterclockwise until the battery cap is loose.
2 Remove battery cap and old batteries.
Once the cap is suciently loose, remove the cap and old
batteries from the well. Always dispose of used alkaline
batteries according to local requirements and regulations.
Clean the o-ring sealing surfaces with a lint-free cloth.
Inspect down into the battery tube to make sure it is clean
and dry.
3 Insert new batteries.
With the positive terminal facing up, insert four (4) new
D-cell batteries into the battery well.
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