Campbell HFP01SC Uživatelský manuál stáhnout pdf (Strana 9)

Model HFP01SC Self-Calibrating Soil Heat Flux Plate

Sensor: Thermopile and film heater

Heater Voltage Input: 9 to 15 Vdc

Heater Voltage Output: 0 to 2 Vdc

Expected Accuracy: ±3% of reading

Sensitivity (nominal): 50 µV W

–1

–2

Sensor Resistance (nominal): 2 Ω

Heater Resistance (nominal): 100 Ω

Duration of Calibration: ±3 min. @ 1.5 W; typically done every 3 to

6 hours

Weight without Cable: 200 g (7.05 oz)

6. Installation

6.1 Placement in Soil

The HFP01SC soil heat flux plates, the TCAV averaging soil temperature

probes, and the CS616, Water Content Reflectometer, are installed as shown in

FIGURE 6-1.

FIGURE 6-1. Placement of heat flux plates

Partial emplacement of the HFP01SC and the TCAV

sensors is shown for illustration purposes. All sensors

must be completely inserted into the soil face before

the hole is backfilled.

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Campbell HFP01SC Uživatelský manuál Strana 9