Table of Contents
Advertisement
6
APPENDIX B. THERMISTOR TEMPERATURE DERIVATION
Thermistor Type: YSI 44005, Dale #1C3001-B3, Alpha #13A3001-B3
Resistance to Temperature Equation:
Where;
T = Temperature in °C.
LnR = Natural Log of Thermistor Resistance
A = 1.4051 × 10 -3
B = 2.369 × 10 -4
C = 1.019 × 10 -7
Note: Coefficients calculated over the −50 to +150° C. span.
Ohms
Temp
201.1K
-50
187.3K
-49
174.5K
-48
162.7K
-47
151.7K
-46
141.6K
-45
132.2K
-44
123.5K
-43
115.4K
-42
107.9K
-41
101.0K
-40
94.48K
-39
88.46K
-38
82.87K
-37
77.66K
-36
72.81K
-35
68.30K
-34
64.09K
-33
60.17K
-32
56.51K
-31
53.10K
-30
49.91K
-29
46.94K
-28
44.16K
-27
41.56K
-26
39.13K
-25
36.86K
-24
34.73K
-23
32.74K
-22
30.87K
-21
29.13K
-20
27.49K
-19
25.95K
-18
24.51K
-17
23.16K
-16
21.89K
-15
20.70K
-14
19.58K
-13
18.52K
-12
17.53K
-11
Table 3 - Thermistor Resistance Versus Temperature
A+B ( LnR ) +C(LnR)
1
T=
Equation 3 - Resistance to Temperature
Ohms
Temp
Ohms
16.60K
-10
2417
15.72K
-9
2317
14.90K
-8
2221
14.12K
-7
2130
13.39K
-6
2042
12.70K
-5
1959
12.05K
-4
1880
11.44K
-3
1805
10.86K
-2
1733
10.31K
-1
1664
9796
0
1598
9310
1535
+1
8851
2
1475
8417
3
1418
8006
4
1363
7618
5
1310
7252
6
1260
6905
7
1212
6576
8
1167
6265
9
1123
5971
10
1081
5692
11
1040
5427
12
1002
5177
13
965.0
4939
14
929.6
4714
15
895.8
4500
16
863.3
4297
17
832.2
4105
18
802.3
3922
19
773.7
3748
20
746.3
3583
21
719.9
3426
22
694.7
3277
23
670.4
3135
24
647.1
3000
25
624.7
2872
26
603.3
2750
27
582.6
2633
28
562.8
2523
29
543.7
-273.15 °C
3
Temp
Ohms
Temp
525.4
+30
+70
31
507.8
71
32
490.9
72
33
474.7
73
34
459.0
74
35
444.0
75
36
429.5
76
37
415.6
77
38
402.2
78
39
389.3
79
40
376.9
80
41
364.9
81
42
353.4
82
43
342.2
83
44
331.5
84
45
321.2
85
46
311.3
86
47
301.7
87
48
292.4
88
49
283.5
89
50
274.9
90
51
266.6
91
52
258.6
92
53
250.9
93
54
243.4
94
55
236.2
95
56
229.3
96
57
222.6
97
58
216.1
98
59
209.8
99
60
203.8
100
61
197.9
101
62
192.2
102
63
186.8
103
64
181.5
104
65
176.4
105
66
171.4
106
67
166.7
107
68
162.0
108
69
157.6
109
Ohms
Temp
153.2
+110
149.0
111
145.0
112
141.1
113
137.2
114
133.6
115
130.0
116
126.5
117
123.2
118
119.9
119
116.8
120
113.8
121
110.8
122
107.9
123
105.2
124
102.5
125
99.9
126
97.3
127
94.9
128
92.5
129
90.2
130
87.9
131
85.7
132
83.6
133
81.6
134
79.6
135
77.6
136
75.8
137
73.9
138
72.2
139
70.4
140
68.8
141
67.1
142
65.5
143
64.0
144
62.5
145
61.1
146
59.6
147
58.3
148
56.8
149
55.6
150
Advertisement
Table of Contents
