Campbell TDR Manual download pdf (Page 19)

Appendix A. Discussion of TDR Probe Offset and a Simple Laboratory Method for Calculation

thWindowLeng•

1datapoints

end

:end

index

distance

−

65.0start

distance

4.3end

distance

(

)

distancep

endV

distance

start•La

:obeOffsetPr

−

0tProbeOffse

086.

TABLE A-1. Dielectric permittivity

values for range of temperatures.

From equation [A5].

Temperature (

°C)

Dielectric

Permittivity

15 82.23

15.5 82.04

16 81.85

16.5 81.67

17 81.48

17.5 81.29

18 81.1

18.5 80.92

19 80.73

19.5 80.55

20 80.36

20.5 80.18

21 79.99

21.5 79.81

22 79.63

22.5 79.44

23 79.26

23.5 79.08

24 78.9

24.5 78.72

25 78.54

25.5 78.36

26 78.18

26.5 78

A-5

1 2 ... 14 15 16 17 18 19 20 21 22 23 24 ... 27 28

TDR Probes CS605, CS610 1
CS630, CS635, CS640, CS645 1
Warranty 3
Assistance 4
Table of Contents 5
Figures 6
CS635, CS640, CS645 7
5. Specifications 8
6. Installation 9
7. Operation 9
Conductivity 11
8. References 13
Connecting Cables 16
() () () () 17
B.1 Description of Method 21
Shorted 22
B.2.2 Determining K 22
ºC and is the electrical 23
Values 24

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