Campbell Scientific OBS-3A Turbidity and Temperature Monitoring System - Manual (Page 16)

OBS-3A Turbidity and Temperature Monitoring System
the cable grip and connector and put chafe protection on the sensor head where
it contacts the wire rope.
FIGURE 6-1. Components
6.1.2 Battery Installation
If unit is wet, perform the following operations with the unit held sensor end
up. Remove the three hex screws from the end with the handle and pull the cap
down and out of the housing.
Use caution if you have significantly changed elevation
since the OBS-3A may be under pressure and the cap
could pop out. CAUTION
Wipe water from inside walls of the tube with a paper towel (FIGURE 6-2).
Slide the battery clip back and insert the batteries with the positive terminal (+)
toward the clip. Push the batteries down and slide the clip against the housing
wall to hold them in place. Inspect the O-ring in the cap and replace the cap
and screws.
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