Campbell Scientific CS445 Liquid Level Sensor - Manual (Page 10)

CS445 Liquid Level Sensor
6
6. Maintenance
Periodic evaluation of the desiccant is vital for keeping the vent tube dry. To
assess the effectiveness of the desiccant, use one of the following:
• An indicating desiccant that changes color when it’s losing its drying
power
• An enclosure humidity indicator such as our #6571 humidity indicator
card
6.1 Every Visit, At Least Monthly
• Collect data
• Visually inspect wiring and physical conditions
• Check indicating desiccant or enclosure humidity indicator; service
desiccant if necessary
• Check battery condition (physical and *6 mode of the datalogger)
• Check all sensor readings (*6 mode of the datalogger); adjust transducer
offsets if necessary
• Check recent data (*7 mode of the datalogger)
• Perform routine maintenance suggested by manufacturers
See datalogger manual for more information on *6 and *7
modes.
6.2 Every Three Months
• Change batteries (as needed--may be less often)
• Replace enclosure desiccants
• Check calibration of all sensors
• Inspect probe cable conditions for deterioration or damage
• Check wire connections ensuring they are still secure
6.3 Every Two to Three Years or on a Rotating Schedule
Send the transducers to the factory or laboratory for inspection and have them
serviced and/or replaced as needed.
NOTE