Owner's manual

Model HFT3 Soil Heat Flux Plate

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

-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