54
Maintenance and Storage
Figure 70
ODO cap replacement
ODO Sensor Cap Replacement
The instruction sheet shipped with the replacement ODO sensor cap
includes the calibration coefficients specific to that sensor cap. Make sure
to save the ODO sensor cap instruction sheet in case you need to reload
the calibration coefficients.
1.
Remove the old sensor cap assembly from the probe by grasping
the probe body with one hand and rotating the sensor cap
counterclockwise until it is completely free. Do not use any tools
for this procedure.
2.
Carefully remove the o-ring by pinching it with your fingers and
rolling it up. Do not use any tools to remove the o-ring. Clean the
area of any debris with a lens cleaning tissue.
3.
Install the new o-ring that is included with the replacement sensor
cap.
4.
Apply a thin coat of o-ring lubricant (included with the new cap) to
the installed o-ring. Remove any excess o-ring lubricant with a lens
cleaning tissue. Be careful to avoid contact with the sensor lens.
5.
Inspect the sensor lens for any moisture or debris. If necessary,
wipe the lens carefully with a non-abrasive, lint-free cloth to
prevent scratches. Do not use organic solvents to clean the ODO
sensor lens.
6.
Remove the new sensor cap from its hydrated container and dry
the inside cavity of the sensor cap with lens cleaning tissue. Make
sure the cavity is completely dry before proceeding with the
installation.
7.
Using clockwise motion, thread the new sensor cap onto the probe
assembly until it is finger-tight. The o-ring should be compressed
between the sensor cap and probe. Do not over-tighten the sensor
cap and do not use any tools for the installation process.
8.
After installing the new sensor cap, store the sensor in either water
or in the water-saturated air storage chamber.
NOTE:
Be sure to update the ODO Sensor Cap Coefficients after
replacement.
