40
Maintenance
2. Unscrew the battery sleeve. Slide the battery sleeve off of the Sonde.
3. Discard the old batteries. Insert the new batteries, observing polarity markings
located on the inside label. Failure to install the batteries in the correct orientation
may cause serious injury and instrument damage.
4. Secure the new batteries with the top and bottom rubber bands (Figure 16).
5. Coat the battery sleeve O-rings sparingly with silicone grease.
6. Screw the battery sleeve back on the Sonde. Do not overtighten or instrument
damage will occur.
7. Discard batteries according to local regulations.
Figure 16 MS5 Battery Replacement
6.2.3 Lithium Battery Replacement
The typical replacement period for the lithium battery is once every two years. The lithium
battery powers the real-time clock that provides accurate time readings during
datalogging. Refer to Figure 17 and Figure 18 and the following instructions for proper
lithium battery replacement.
1. Remove the Allen screws with the Allen wrench to remove the multiprobe sensor cap.
To help remove the Sonde sensor cap, insert the screwdriver head into the notches on
the mulitprobe housing at the bottom of the sensor cap.
1. Remove the Battery Sleeve 4. Bottom Retaining Rubberband
2. Remove depleted AA Batteries 5. Proper Battery Placement
3. Top Retaining Rubberband 6. Replace the Battery Sleeve
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