Campbell CS655 Bedienungsanleitung PDF herunterladen (Seite 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.

2 cm

6 cm

8 cm

Ground Surface

Up to 1 m

2.5 cm

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.

FIGURE 6-1. Placement of heat flux plates

1 2 3 4 5 6 7 8 9 10 11 12 13 14 ... 33 34

Keine Kommentare

Campbell CS655 Bedienungsanleitung Seite 9