Campbell Scientific CNR1 Net Radiometer - Manual (Page 26)

CNR1 Net Radiometer
;Measure CNR1 temperature
3: Full Bridge w/mv Excit (P9)
1: 1 Reps
2: 22 50 mV, 60 Hz Reject, Slow, Ex Range
3: 22 50 mV, 60 Hz Reject, Slow, Br Range
4: 5 DIFF Channel
5: 1 Excite all reps w/Exchan 1
6: 4200 mV Excitation
7: 5 Loc [ Temp_C ]
8: 1 Mult
9: 0 Offset
4: Temperature RTD (P16)
1: 1 Reps
2: 5 R/R0 Loc [ Temp_C ]
3: 5 Loc [ Temp_C ]
4: 1.0 Mult
5: 0 Offset
5: Z=X+F (P34)
1: 5 X Loc [ Temp_C ]
2: 273.15 F
3: 6 Z Loc [ Temp_K ]
;Output data to final storage every 60 minutes
6: If time is (P92)
1: 0
Minutes (Seconds --) into a
2: 60 Interval (same units as above)
3: 10 Set Output Flag High (Flag 0)
7: Real Time (P77)
1: 0220
Day,Hour/Minute (midnight = 2400)
8: Average (P71)
1: 6
Reps
2: 1 Loc [ CM3_up ]
Copy range code options from example 1 here:
* Proper entries….
* Proper entries will vary with program and input channel usage.
** 25 mV range for CR10X, 50 mV for 21X and CR7
*** 4200 mV for 21X and CR7, 2100 mV for CR10X
+ 25 mV range for CR10X, 50 mV for 21X and CR7
++ 7.5 mV range for CR10X, 5 mV for 21X and CR7
7. Calibration
The CNR1 should be recalibrated every two years, or as an alternative, by
letting a higher standard run parallel to it over a two-day period and then
comparing the results. For comparison of pyranometers, one should use a clear
day. For comparison of pyrgeometers, one should compare nighttime results.
Deviations of more than 6% can be used to correct the calibration factors.
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