Campbell Scientific 107-L Temperature Probe - Manual (Page 19)

Model 107 Temperature Probe
CRBasic
For CRBasic dataloggers, the 60 Hz and 50 Hz integration options include a 3
ms settling time; longer settling times can be entered into the Settling Time
parameter. The following example uses a 20000 µs settling time.
Therm107 (T107_C,1,1,1,20000,_60Hz,1.0,0.0)
Edlog
The 60 Hz and 50 Hz rejection options for the CR10X, CR510, and CR23X
include a delay to accommodate long cable lengths.
When using the CR10, 21X, and CR7 dataloggers, if the 107 probe has cable
lengths of more than 300 feet, use the Excite-Delay (SE) (P4) instruction with
a 20 ms delay to measure temperature, as shown in the following Edlog code.
The CR10, 21X, and CR7 dataloggers have no programming provision for
compensating for long cables and filtering 60 Hz or 50 Hz noise
simultaneously.
1: Excite-Delay (SE) (P4)
1:
1 Reps
2: 2 7.5 mV Slow Range
3: 9 SE Channel
4: 3 Excite all reps w/Exchan 3
5: 2 Delay (units 0.01 sec)
6: 2000 mV Excitation ;21X,CR7: 4000 mV
7: 1 Loc [ Air_Temp ]
8: .4 Mult ;21X,CR7: 0.2
9: 0 Offset
2: Polynomial (P55)
1:
1 Reps
2: 1 X Loc [ Air_Temp ]
3: 1 F(X) Loc [ Air_Temp ]
4: -53.46 C0
5: 90.807 C1
6: -83.257 C2
7: 52.283 C3
8: -16.723 C4
9: 2.211 C5
9. Troubleshooting and Maintenance
All factory repairs and recalibrations require a returned material
authorization (RMA) and completion of the “Declaration of
Hazardous Material and Decontamination” form. Refer to the
Assistance page at the beginning of this manual for more
information.
9.1 Troubleshooting
Symptom: Temperature is reported as NAN, -INF, or -9999.
Verify the red wire is connected to the correct single-ended analog input
channel as specified by the measurement instruction, and the purple wire is
connected to datalogger ground.
NOTE
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