INSTRUCTION MANUAL
HFT3 Soil Heat Flux Plate
Revision: 10/03
C o p y r i g h t ( c ) 1 9 8 7 - 2 0 0 3
C a m p b e l l S c i e n t i f i c , I n c .
Страница 1: ...INSTRUCTION MANUAL HFT3 Soil Heat Flux Plate Revision 10 03 C o p y r i g h t c 1 9 8 7 2 0 0 3 C a m p b e l l S c i e n t i f i c I n c...
Страница 2: ...ther warranties expressed or implied including warranties of merchantability or fitness for a particular purpose CAMPBELL SCIENTIFIC INC is not liable for special indirect incidental or consequential...
Страница 3: ...ion 1 2 Specifications 1 3 Installation 2 4 Wiring 3 5 Example Programs 4 6 Soil Heat Flux and Storage 5 7 Maintenance 6 8 References 6 Figures 1 Placement of Heat Flux Plates 2 2 HFT3 Plate to Datalo...
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Страница 5: ...T3 Finally a CS615 Water Content Reflectometer is used to measure the soil water content The temporal change in soil temperature and soil water content are used to compute the soil storage term The L...
Страница 6: ...he soil Excavate the soil to one side of the slice Keep this soil intact so that is can be replaced with minimal disruption The sensors are installed in the undisturbed face of the hole Measure the se...
Страница 7: ...21X CR7 Signal Black Single Ended Input Single Ended Input Signal Reference White AG Shield Clear G TABLE 2 Datalogger Connections for a Differential Measurement Description Color CR10 X CR510 CR23X...
Страница 8: ...ut The HFT3 has a nominal calibration of 42 W m 2 mV 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 en...
Страница 9: ...r specific heat of dry soil and water are on a mass basis The heat capacity of the moist soil is given by C C C C C s b d m w b d v w w 1 m w b v 2 where CS is the heat capacity of moist soil b is bul...
Страница 10: ...s of continuous use Obtain an RMA number before returning the HFT3 to Campbell Scientific for calibration 8 References Hanks R J and G L Ashcroft 1980 Applied Soil Physics Soil Water and Temperature A...
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Страница 12: ...campbellsci com br suporte campbellsci com br Campbell Scientific Canada Corp CSC 11564 149th Street NW Edmonton Alberta T5M 1W7 CANADA www campbellsci ca dataloggers campbellsci ca Campbell Scientifi...
