Campbell Scientific HFT3 REBS Soil Heat Flux Plate - Manual (Page 8)

Model HFT3 Soil Heat Flux Plate
4
The wiring convention is that the black wire is positive with respect to the other
insulated wire, when energy is flowing through the transducer from the side
with white dot to the side without the white dot.
5. Example Programs
This section is for users who write their own dataloger programs. A datalogger
program to measure the sensor can be created using Campbell Scientific’s Short
Cut Program Builder software. You do not need to read this section if you use
Short Cut.
The HFT3 has a nominal calibration of 42 W m
-2
mV
-1
. Each sensor is
accompanied with a calibration certificate. Each sensor has a unique
calibration label on it. The label is located on the pigtail end of the sensor
leads.
TABLE 3. Wiring for Example 1
Description Color CR10(X)
Signal Black SE 5 (3H)
Signal Reference White AG
Shield Clear G
Example 1 Sample CR10(X) Program using a Single-Ended Measurement Instruction
01: Volt (SE) (P1)
1: 1 Reps
2: 2 7.5 mV Slow Range ;CR510 (7.5 mV);CR23X (10 mV); 21X, CR7 (5 mV)
3: 5 SE Channel ;Black wire (SE 5), White wire (AG)
4: 1 Loc [ HFT3 ]
5: 1 Mult ;Enter Calibration
6: 0 Offset
TABLE 4. Wiring for Example 2
Description Color CR23X
Signal Black 9H
Signal Reference White 9L
Shield Clear