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Thermistor Curve
F
C
K OHM
118.201
-10
-23.3
114.394
-9
-22.7
110.709
-8
-22.2
107.143
-7
-21.6
103.692
-6
-21.1
-5
-20.5
100.352
-4
-20.0
97.120
-3
-19.4
94.085
-2
-18.8
91.144
-1
-18.3
88.296
0
-17.7
85.536
1
-17.2
82.863
2
-16.6
80.273
3
-16.1
77.765
4
-15.5
75.334
5
-15.0
72.980
6
-14.4
70.627
7
-13.8
68.350
8
-13.3
66.147
9
-12.7
64.014
10
-12.2
61.951
11
-11.6
59.953
12
-11.1
58.021
13
-10.5
56.150
14
-10.0
54.340
15
-9.4
52.854
16
-8.8
51.409
17
-8.3
50.003
18
-7.7
48.636
19
-7.2
47.306
20
-6.6
46.012
21
-6.1
44.754
When checking a thermistor probe, first determine the temperature at the probe and find it on this chart, along with the correct
ohmmeter reading. If your ohmmeter reading varies from the correct reading, determine whether the difference is acceptable. If
a probe is faulty, the difference will be great.
Controls & Systems
F
C
K OHM
43.530
22
-5.5
42.340
23
-5.0
41.136
24
-4.4
39.967
25
-3.8
38.830
26
-3.3
27
-2.7
37.727
28
-2.2
36.654
29
-1.6
35.612
30
-1.1
34.599
31
-0.5
33.616
32
0
32.660
33
0.5
31.760
34
1.1
30.885
35
1.6
30.035
36
2.2
29.207
37
2.7
28.403
38
3.3
27.620
39
3.8
26.859
40
4.4
26.120
41
5.0
25.400
42
5.5
24.721
43
6.1
24.059
44
6.6
23.416
45
7.2
22.789
46
7.7
22.180
47
8.3
21.586
48
8.8
21.009
49
9.4
20.447
50
10.0
19.900
51
10.5
19.384
52
11.1
18.881
53
11.6
18.392
14
F
C
K OHM
17.915
54
12.2
17.451
55
12.7
16.998
56
13.3
16.557
57
13.8
16.128
58
14.4
59
15.0
15.710
60
15.5
15.315
61
16.1
14.929
62
16.6
14.554
63
17.2
14.187
64
17.7
13.830
65
18.3
13.482
66
18.8
13.143
67
19.4
12.812
68
20.0
12.490
69
20.5
12.185
70
21.1
11.888
71
21.6
11.598
72
22.2
11.315
73
22.7
11.039
74
23.3
10.769
75
23.8
10.507
76
24.4
10.250
77
25.0
10.000
78
25.5
9.763
79
26.1
9.532
80
26.6
9.306
81
27.2
9.085
82
27.7
8.870
83
28.3
8.659
84
28.8
8.454
85
29.4
8.254
Models 358 & 359
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Troubleshooting
