HFP01SC-L Hukseflux Self-Calibrating Soil Heat Flux Plate thumbnail 1

HFP01SC-L Hukseflux Self-Calibrating Soil Heat Flux Plate thumbnail 2

Campbell Scientific

HFP01SC-L Hukseflux Self-Calibrating Soil Heat Flux Plate

Soil & CropsIn-Situ Soil Physical Research

The HFP01SC consists of a thermopile and a film heater. The thermopile measures temperature gradients across the plate. During the in-situ field calibration, the film heater is used to generate a heat flux through the plate. The amount of power used to generate the calibration heat flux is measured by the data logger. Each plate is individually calibrated, at the factory, to output flux.

Quantity

Benefits

Corrects for errors due to differences in thermal conductivity between the sensor and surrounding medium, temperature variations, and slight sensor instabilities
Compatible with most Campbell Scientific data loggers
Uses Van den Bos-Hoeksma self-calibration method to provide a high degree of measurement accuracy

Specifications

GENERAL SPECIFICATIONS

Sensor Type	Thermopile with film heater
Sensitivity	50 μV W^-1 m^-2 (nominal)
Nominal Resistance	2 Ω
Temperature Range	-30° to +70°C
Expected Typical Accuracy	±3% of reading
Heater Resistance	100 Ω (nominal)
Heater Voltage Input	9 to 15 Vdc
Heater Voltage Output	0 to 2 Vdc
Duration of Calibration	±3 minutes @ 1.5 W (typically performed every 3 to 6 hours)
Average Power Consumption	0.02 to 0.04 W
Plate Diameter	80 mm (3.15 in.)
Plate Thickness	5 mm (0.20 in.)
Weight	200 g (7.05 oz) without cable