Campbell-scientific 108-L Temperature Probe Manual do Utilizador descarregar pdf (Página 25)

Appendix C. Conversion of Thermistor

Resistance or Voltage Ratio to

Temperature

TABLE C-1. Voltage Ratio, Resistance, and Temperature

1

Actual

Temperature

(°C)

100K6A1iA

Thermistor

Resistance (Ω)

P5 Edlog

Instruction

= Vs/Vx * 200

P55 Edlog

Instruction Output

(°C)

CRBasic

Therm108()

Output (°C)

-10

612407

0.31

-9.02

-10.00

-9

578366

0.32

-8.20

-9.00

-8

546408

0.34

-7.37

-8.00

-7

516394

0.36

-6.51

-7.00

-6

488196

0.38

-5.63

-6.00

-5

461695

0.40

-4.74

-5.00

-4

436779

0.42

-3.83

-4.00

-3

413346

0.44

-2.91

-3.00

-2

391300

0.46

-1.97

-2.00

-1

370551

0.49

-1.01

-1.00

0

351017

0.51

-0.05

0.00

1

332620

0.54

0.93

1.00

2

315288

0.56

1.91

2.00

3

298954

0.59

2.91

3.00

4

283555

0.62

3.91

4.00

5

269034

0.65

4.91

5.00

6

255335

0.67

5.93

6.00

7

242408

0.71

6.94

7.00

8

230206

0.74

7.96

8.00

9

218684

0.77

8.98

9.00

10

207801

0.80

10.00

10.00

11

197518

0.84

11.02

11.00

12

187799

0.87

12.04

12.00

13

178610

0.91

13.05

13.00

14

169921

0.95

14.07

14.00

15

161700

0.99

15.08

15.00

16

153921

1.03

16.09

16.00

17

146558

1.07

17.09

17.00

18

139586

1.11

18.10

18.00

19

132983

1.15

19.09

19.00

20

126727

1.19

20.09

20.00

21

120799

1.24

21.08

21.00

22

115179

1.28

22.07

22.00

23

109850

1.33

23.06

23.00

24

104795

1.37

24.05

24.00

25

100000

1.42

25.04

25.00

26

95449

1.47

26.02

26.00

27

91129

1.51

27.01

27.00

28

87027

1.56

27.99

28.00

29

83131

1.61

28.98

29.00

30

79430

1.66

29.96

30.00

C-1

1 2 ... 20 21 22 23 24 25 26 27 28 29 30

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