
Model HFP01SC Self-Calibrating Soil Heat Flux Plate
In order for the HFP01SC to make quality soil heat flux
measurements, the plate must be in full contact with the
soil.
CAUTION
Never run the sensors leads directly to the surface. Rather, bury the sensor
leads a short distance back from the hole to minimized thermal conduction on
the lead wire. Replace the excavated soil back into its original position after
all the sensors are installed.
Signal (White)
Signal Reference (Green)
Shield (Clear)
Heater Resistor Signal (Yellow)
Heater Resistor Signal Reference (Purple)
Shield (Clear)
Power (Red)
Power Reference (Black)
FIGURE 2. HFP01SC Plate
TABLE 1. Datalogger Connections for a Single-Ended Measurement
Description Color CR10X CR23X & CR5000
Sensor Signal White Single-Ended Input Single-Ended Input
Sensor Signal Reference Green AG
Shield Clear G
Heater Resistor Signal Yellow Single-Ended Input Single-Ended Input
Heater Resistor Signal
Reference
Purple AG
Shield Clear G
Power Red SW12 SW12
Power Reference Black G G
External Power Control jumper wire SW12-CTRL to
Control Port
External Power
Control Not Needed
3
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