Campbell Scientific UT20 and UT30 Tower-based Weather Stations - Manual (Page 68)

UT20 and UT30 Tower-based Weather Stations
2 years
• Calibrate the solar radiation sensors (some users suggest yearly).
• Calibrate the temperature sensor.
• Replace the wind vane potentiometer and bearings.
4 to 5 years
• Replace sensor cables as required.
9.2 Troubleshooting
9.2.1 No Response Using the Keypad
Check keypad response after each of the following steps.
A. Make sure the battery has been installed, and the power switch, if any, is
“ON”.
B. Use a voltmeter to measure the voltage on the 12 V and G terminals; the
voltage must be between 9.6 and 16 Vdc.
C. Disconnect any sensor or peripheral wires connected to the 5 V and 12 V
terminals.
D. Disconnect any communications or storage peripherals from the
datalogger.
E. Reset the datalogger by turning the power switch to “OFF”, then to “ON”
or disconnecting and reconnecting the battery.
F. If still no response, call Campbell Scientific.
9.2.2 No Response from Datalogger through SC32B or Modem Peripheral
At the datalogger:
A. Make sure the battery has been installed, and the power switch, if any, is
“ON”.
B. Use a voltmeter to measure the voltage on the 12 V and G terminals; the
voltage must be between 9.6 and 16 Vdc.
C. Make sure the datalogger is connected to the modem, and the modem is
properly configured and cabled (Section 8.3, Communication and Data
Storage Peripherals).
At the computer:
D. Make sure the Station File is configured correctly (LoggerNet or PC400
Manual).
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