Related Manuals for Campbell HFT3
Summary of Contents for Campbell HFT3
- Page 1 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 ,...
- Page 2 Warranty and Assistance The HFT3 SOIL HEAT FLUX PLATE is warranted by CAMPBELL SCIENTIFIC, INC. to be free from defects in materials and workmanship under normal use and service for twelve (12) months from date of shipment unless specified otherwise. Batteries have no warranty. CAMPBELL SCIENTIFIC, INC.'s obligation under this warranty is limited to repairing or replacing (at...
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Page 3: Table Of Contents
7. Maintenance ..............6 8. References ..............6 Figures 1. Placement of Heat Flux Plates ..............2 2. HFT3 Plate to Datalogger Connections ............3 Tables 1. Datalogger Connections for a Single-Ended Measurement......3 2. Datalogger Connections for a Differential Measurement......3 3. Wiring for Example 1 .................4... - Page 4 This is a blank page.
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Page 5: General Description
The -L option on the model HFT3 Soil Heat Flux plate (HFT3-L) indicates that the cable length is user specified. This manual refers to the sensor as the HFT3. -
Page 6: Installation
Insert the heat flux plate into the horizontal cut. NOTE Install the HFT3 in the soil such that the side with the white dot is facing the sky. CAUTION... -
Page 7: Wiring
Differential Input (L) Shield Clear 4. Wiring Connections to Campbell Scientific dataloggers are given in Tables 1 and 2. The output of the HFT3 can be measured using a single-ended analog measurement (Instruction 1) or a differential analog measurement (Instruction... -
Page 8: Example Programs
This section is for users who write their own dataloger programs. A datalogger program to measure the sensor can be created using Campbell Scientific’s Short Cut Program Builder software. You do not need to read this section if you use Short Cut. -
Page 9: Soil Heat Flux And Storage
Model HFT3 Soil Heat Flux Plate Example 2 Sample CR23X Program using a Differential Measurement Instruction ;Measure the HFT3 Soil Heat Flux plate. 01: Volt (Diff) (P2) 1: 1 Reps 2: 21 10 mV, 60 Hz Reject, Slow Range ;CR510, CR10(X) (7.5 mV); 21X, CR7 (5 mV) -
Page 10: Maintenance
7. Maintenance The HFT3 requires minimal maintenance. Check the sensor leads monthly for rodent damage. Recalibrate the HFT3 every two years 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 Application. - Page 11 This is a blank page.
- Page 12 Campbell Scientific Companies Campbell Scientific, Inc. (CSI) 815 West 1800 North Logan, Utah 84321 UNITED STATES www.campbellsci.com info@campbellsci.com Campbell Scientific Africa Pty. Ltd. (CSAf) PO Box 2450 Somerset West 7129 SOUTH AFRICA www.csafrica.co.za sales@csafrica.co.za Campbell Scientific Australia Pty. Ltd. (CSA)