CS300 Pyranometer
Recalibrate the CS300 every three years. Obtain an RMA number before
returning the CS300 to Campbell Scientific, Inc. for recalibration.
7. Troubleshooting
Symptom: -9999 or radiation values around 0
1.
Check that the sensor is wired to the Single-Ended channel specified by
the measurement instruction.
2.
Verify that the Range code is correct for the datalogger type.
3.
Disconnect the sensor leads from the datalogger and use a DVM to check
the voltage between the red (+) and the black (-) wires. The voltage
should be 0 – 200 mV for 0 to 1000 Wm-2 radiation. No voltage indicates
a problem with either the photodiode or the shunt resistor, both of which
are potted in the sensor head and can not be serviced.
Symptom: Incorrect solar radiation
1.
Make sure the top surface of the sensor head is clean, and that the sensor
is properly leveled.
2.
Verify that the Range code, multiplier and offset parameters are correct
for the desired engineering units and datalogger type.
Jumps of 3 to 6 Wm
-2
are typical of CR200(X) measurements,
due to the 0.6 mV CR200(X) resolution and the 0.2 mV/Wm
-2
CS300 sensitivity.
NOTE
9
