Measurements of thermistor

This page has data for the post Temperature lab, part2, where the data is discussed.

Temperature was measured with pasteurizing thermometer sold by New England Cheesemaking Supply Co.  No check was made of the calibration of that thermometer.

First table of measurements for Vishay BC Components NTCLE413E2103F520L, which claims to have 10kΩ at 25°C and B-value 3435°K, both resistance and B-value ±1%.  This set of measurements was done with a cheap multimeter labeled DT-830B, whose accuracy is suspect.

degrees_F	kohm
189	1.532
182	1.656
178	1.750
175	1.800
170	1.958
166	1.98
160	2.18
158	2.30
154	2.41
150	2.63
146	2.76
142	2.92
138	3.27
134	3.47
128	3.75
119	4.47
117	4.73
115	5.12
110	4.60
107.5	5.26
98	6.42
87	7.60
68	11.50
60	13.75
55	15.38
50	17.00
42	20.0
36	22.3

The second set of data was collected with the same thermistor, but using a Fluke 8060A multimeter, which appears to measure resistance accurately (at least, within the accuracy of the 1% resistors I used to test it).

degrees_F	kohm
192	1.30
190	1.37
186	1.452
180	1.65
176	1.718
172	1.85
166	2.02
162	2.22
160	2.35
154	2.41
152	2.48
150	2.60
148	2.70
145	2.92
140	3.15
138	3.31
134	3.63
132	3.56
130	3.70
128	3.77
126	4.00
124	4.15
122	4.30
120	4.36
118	4.52
116	4.76
114	4.93
112	5.09
108	5.43
106	5.67
104	5.93
121	4.36
115	4.75
114	4.81
110	5.17
106	5.61
103	5.88
97	6.66
94	7.11
92	7.34
88	7.78
85	8.34
82	8.75
80	9.29
77	9.77
74	10.40
72	10.75
69	11.52
66	12.21
70	11.209
67	11.865
65	12.583
62	13.14
58	14.349
57	14.804
53	16.025
50	17.05
47	18.15
44	19.04
42	20.1
38	22.0
34	25.2
32	25.5

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