Appendix D.High-Temperature Thermistor Linearization
Resistance to Temperature Equation for US Sensor 103JL1A:
equation 9: High-Temperature Resistance to Temperature
Where:
T = Temperature in °C
LnR = Natural Log of Thermistor Resistance.
A = 1.127670 x 10-3
B = 2.344442 x 10-4
C = 8.476921 x 10-8
D = 1.175122 x 10-11
Note: Coefficients optimized for a curve J thermistor over the temperature range of 0 °C to +250 °C.
Ohms |
Temp |
Ohms |
Temp |
Ohms |
Temp |
Ohms |
Temp |
Ohms |
Temp |
Ohms |
Temp |
Ohms |
Temp |
Ohms |
Temp |
32,650 |
0 |
7,402 |
32 |
2,157 |
64 |
763.5 |
96 |
316.6 |
128 |
148.4 |
160 |
76.5 |
192 |
42.8 |
224 |
31,029 |
1 |
7,098 |
33 |
2,083 |
65 |
741.2 |
97 |
308.7 |
129 |
145.1 |
161 |
75.0 |
193 |
42.1 |
225 |
29,498 |
2 |
6,808 |
34 |
2,011 |
66 |
719.6 |
98 |
301.0 |
130 |
142.0 |
162 |
73.6 |
194 |
41.4 |
226 |
28,052 |
3 |
6,531 |
35 |
1,942 |
67 |
698.7 |
99 |
293.5 |
131 |
138.9 |
163 |
72.2 |
195 |
40.7 |
227 |
26,685 |
4 |
6,267 |
36 |
1,876 |
68 |
678.6 |
100 |
286.3 |
132 |
135.9 |
164 |
70.8 |
196 |
40.0 |
228 |
25,392 |
5 |
6,015 |
37 |
1,813 |
69 |
659.1 |
101 |
279.2 |
133 |
133.0 |
165 |
69.5 |
197 |
39.3 |
229 |
24,170 |
6 |
5,775 |
38 |
1,752 |
70 |
640.3 |
102 |
272.4 |
134 |
130.1 |
166 |
68.2 |
198 |
38.7 |
230 |
23,013 |
7 |
5,545 |
39 |
1,693 |
71 |
622.2 |
103 |
265.8 |
135 |
127.3 |
167 |
66.9 |
199 |
38.0 |
231 |
21,918 |
8 |
5,326 |
40 |
1,637 |
72 |
604.6 |
104 |
259.3 |
136 |
124.6 |
168 |
65.7 |
200 |
37.4 |
232 |
20,882 |
9 |
5,117 |
41 |
1,582 |
73 |
587.6 |
105 |
253.1 |
137 |
122.0 |
169 |
64.4 |
201 |
36.8 |
233 |
19,901 |
10 |
4,917 |
42 |
1,530 |
74 |
571.2 |
106 |
247.0 |
138 |
119.4 |
170 |
63.3 |
202 |
36.2 |
234 |
18,971 |
11 |
4,725 |
43 |
1,480 |
75 |
555.3 |
107 |
241.1 |
139 |
116.9 |
171 |
62.1 |
203 |
35.6 |
235 |
18,090 |
12 |
4,543 |
44 |
1,432 |
76 |
539.9 |
108 |
235.3 |
140 |
114.5 |
172 |
61.0 |
204 |
35.1 |
236 |
17,255 |
13 |
4,368 |
45 |
1,385 |
77 |
525.0 |
109 |
229.7 |
141 |
112.1 |
173 |
59.9 |
205 |
34.5 |
237 |
16,463 |
14 |
4,201 |
46 |
1,340 |
78 |
510.6 |
110 |
224.3 |
142 |
109.8 |
174 |
58.8 |
206 |
33.9 |
238 |
15,712 |
15 |
4,041 |
47 |
1,297 |
79 |
496.7 |
111 |
219.0 |
143 |
107.5 |
175 |
57.7 |
207 |
33.4 |
239 |
14,999 |
16 |
3,888 |
48 |
1,255 |
80 |
483.2 |
112 |
213.9 |
144 |
105.3 |
176 |
56.7 |
208 |
32.9 |
240 |
14,323 |
17 |
3,742 |
49 |
1,215 |
81 |
470.1 |
113 |
208.9 |
145 |
103.2 |
177 |
55.7 |
209 |
32.3 |
241 |
13,681 |
18 |
3,602 |
50 |
1,177 |
82 |
457.5 |
114 |
204.1 |
146 |
101.1 |
178 |
54.7 |
210 |
31.8 |
242 |
13,072 |
19 |
3,468 |
51 |
1,140 |
83 |
445.3 |
115 |
199.4 |
147 |
99.0 |
179 |
53.7 |
211 |
31.3 |
243 |
12,493 |
20 |
3,340 |
52 |
1,104 |
84 |
433.4 |
116 |
194.8 |
148 |
97.0 |
180 |
52.7 |
212 |
30.8 |
244 |
11,942 |
21 |
3,217 |
53 |
1,070 |
85 |
421.9 |
117 |
190.3 |
149 |
95.1 |
181 |
51.8 |
213 |
30.4 |
245 |
11,419 |
22 |
3,099 |
54 |
1,037 |
86 |
410.8 |
118 |
186.1 |
150 |
93.2 |
182 |
50.9 |
214 |
29.9 |
246 |
10,922 |
23 |
2,986 |
55 |
1,005 |
87 |
400.0 |
119 |
181.9 |
151 |
91.3 |
183 |
50.0 |
215 |
29.4 |
247 |
10,450 |
24 |
2,878 |
56 |
973.8 |
88 |
389.6 |
120 |
177.7 |
152 |
89.5 |
184 |
49.1 |
216 |
29.0 |
248 |
10,000 |
25 |
2,774 |
57 |
944.1 |
89 |
379.4 |
121 |
173.7 |
153 |
87.7 |
185 |
48.3 |
217 |
28.5 |
249 |
9,572 |
26 |
2,675 |
58 |
915.5 |
90 |
369.6 |
122 |
169.8 |
154 |
86.0 |
186 |
47.4 |
218 |
28.1 |
250 |
9,165 |
27 |
2,579 |
59 |
887.8 |
91 |
360.1 |
123 |
166.0 |
155 |
84.3 |
187 |
46.6 |
219 |
|
|
8,777 |
28 |
2,488 |
60 |
861.2 |
92 |
350.9 |
124 |
162.3 |
156 |
82.7 |
188 |
45.8 |
220 |
|
|
8,408 |
29 |
2,400 |
61 |
835.4 |
93 |
341.9 |
125 |
158.6 |
157 |
81.1 |
189 |
45.0 |
221 |
|
|
8,057 |
30 |
2,316 |
62 |
810.6 |
94 |
333.2 |
126 |
155.1 |
158 |
79.5 |
190 |
44.3 |
222 |
|
|
7,722 |
31 |
2,235 |
63 |
786.6 |
95 |
324.8 |
127 |
151.7 |
159 |
78.0 |
191 |
43.5 |
223 |
|
|
table 12: Thermistor Resistance versus Temperature for Model 4200HT