In-Situ RDO PRO Process Optical Dissolved Oxygen Sensor Manual - Manual (Page 10)

7. Clean the sensor lens with the wipe provided in the kit and allow it to thoroughly dry. Inspect for
scratches or dirt.
8. Remove the new cap from its sealed packaging and attach it to the sensor, being careful to press
firmly, without twisting, until it seals over the lens. Make sure that the O-rings are not pinched or
rolled between the cap and sensor. Replace the nose cone.
9. Perform a 1- or 2-point calibration.
4.5 Maintaining Desiccant
Desiccant installed in a controller or transceiver protects probe electronics from condensation. A
desiccant pack changes color from blue to pink as it becomes saturated with moisture.
It is extremely important to use the proper size desiccant for your deployment and to
change desiccant often. Desiccant should be changed before the entire pack has
turned pink, and you should use enough to effectively keep cables and instruments
dry until your next scheduled maintenance. Desiccant lifespan is dependent on site
conditions.
Page 10 Care and Maintenance