Campbell Scientific HFP01SC Hukseflux Self-Calibrating Soil Heat Flux Plate - Manual (Page 21)

Model HFP01SC Self-Calibrating Soil Heat Flux Plate
*Table 2 Program
02: 0
Execution Interval (seconds)
*Table 3 Subroutines
;Calibration routine.
;
1: Beginning of Subroutine (P85)
1: 8
Subroutine 8
;Perform in-situ calibration.
;
2: If time is (P92)
1: 1
Minutes (Seconds --) into a
2: 180 Interval (same units as above)
3: 30 Then Do
3: Z=X (P31)
1: 2
X Loc [ shf_mV ]
2: 4 Z Loc [ mV_0 ]
;Begin heating for calibration.
;
4: Do (P86)
1: 49
Turn On Switched 12V
;Used to filter data during and after calibration.
;
5: Do (P86)
1: 118
Set Flag 18 High
6: End (P95)
;End site calibration three minutes after calibration started.
;
7: If time is (P92)
1: 4
Minutes (Seconds --) into a
2: 180 Interval (same units as above)
3: 30 Then Do
;Measure voltage across current shunt resistor during calibration.
;This measurement is used to compute power.
;
8: Volt (Diff) (P2)
1: 1
Reps
2: 25 5000 mV, 60 Hz Reject, Fast Range
3: 10 DIFF Channel
4: 7 Loc [ V_Rf ]
5: .001 Mult
6: 0 Offset
9: Z=X (P31)
1: 2
X Loc [ shf_mV ]
2: 5 Z Loc [ mV_180 ]
;Turn off the soil heat flux plate heater.
;
10: Do (P86)
1: 59
Turn Off Switched 12V
11: End (P95)
;Stop filtering data.
;
12: If time is (P92)
1: 39
Minutes (Seconds --) into a
2: 180 Interval (same units as above)
3: 30 Then Do
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