In-Situ Aquaculture Buoy Manual (purchased before 28 May 2013) - Manual (Page 10)

10 Sensors
FIGURE 3. Removing the RDO sensor from the buoy to attach the cap
Note: Avoid allowing
moisture, including
atmospheric humidity,
inside the cap. Keep the
cap in its sealed packaging
until you are ready to
install it. Install promptly.
Make sure that O-ring
grooves are dry and the O-
ring is not rolled or pinched
inside the cap. 5. Unscrew the nose cone from the sensor and remove the red protective
dust cap from the sensor. Save the dust cap for use during storage, if
applicable.
6. Remove the RDO sensor cap from its shipping/storage sleeve.
7. Align the arrow on the cap with the index mark on the sensor and firmly
press the cap onto the sensor, without twisting, until it seals over the
probe body.