Campbell Scientific CS420 and CS425 PDCR 1830-8388 Pressure Transducer - Manual (Page 25)

CS420-L and CS425-L Pressure Transducers
• Check indicating desiccant or enclosure humidity indicator; service
desiccant if necessary
• Check battery condition (inspect physical appearance and use a keyboard
display or laptop to view the battery voltage)
• Check all sensor readings (using keyboard display or laptop); adjust
transducer offsets if necessary
• Check recent data using keyboard display or laptop
• Perform routine maintenance suggested by manufacturers
See datalogger manual for more information about using a
keyboard display or laptop to view battery voltage, sensor
readings, and recent data. NOTE
9.2 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
9.3 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.
10. Troubleshooting
The most common causes of erroneous pressure transducer data include:
• poor sensor connections to the datalogger
• damaged cables
• damaged transducers
• moisture in the vent tube
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