铂电阻是pt100，它的阻值跟温度的变化成正比。pt100的阻值与温度变化关系为：当pt100温度为0℃时它的阻值为100欧姆，在100℃时它的阻值约为138.5欧姆。它的工业原理：当pt100在0摄氏度的时候他的阻值为100欧姆，它的阻值会随着温度上升而成匀速增长的。
铂电阻pt100的温度和阻值对应关系如下：
温度
0
1
2
3
4
5
6
7
8
9
（℃）
电阻值（ω）
－30
88.04
87.64
87.24
86.84
86.44
86.04
85.63
85.23
84.83
84.43
－20
92.04
91.64
91.24
90.84
90.44
90.04
89.64
89.24
88.84
88.44
－10
98.03
95.63
95.23
94.83
94.43
94.03
93.63
93.24
92.84
92.44
－0
100.00
99.60
99.21
98.81
98.41
98.01
97.62
97.22
96.82
96.42
0
100.00
100.40
100.79
101.19
101.59
101.98
102.38
102.78
103.17
103.57
10
103.96
104.36
104.75
105.15
105.54
105.94
106.33
106.73
107.12
107.52
20
107.91
108.31
108.70
109.10
109.49
109.88
110.28
110.67
111.07
111.46
30
111.85
112.25
112.64
113.03
113.43
113.82
114.21
114.60
115.00
115.39
40
115.78
116.17
116.57
116.96
117.35
117.74
118.13
118.52
118.91
119.31
50
119.70
120.09
120.48
120.87
121.26
121.65
122.04
122.43
122.82
123.21
60
123.60
123.99
124.38
124.77
125.16
125.55
125.94
126.33
126.72
127.10
70
127.49
127.88
128.27
128.66
129.05
129.44
129.82
130.21
130.60
130.99
80
131.37
131.76
132.15
132.54
132.92
133.31
133.70
134.08
134.47
134.88
90
135.24
135.63
136.02
136.40
136.79
137.17
137.56
137.94
138.32
138.72
100
139.10
139.49
139.87
140.26
140.64
141.02
141.41
141.79
142.18
142.66
110
142.95
143.33
143.71
144.10
144.48
144.86
145.25
145.63
146.01
146.40
120
146.78
147.16
147.55
147.93
148.31
148.69
149.07
149.46
149.84
150.22
130
150.60
150.98
151.37
151.75
152.13
152.51
152.89
153.27
153.65
154.03
140
154.41
154.79
155.17
155.55
155.93
156.31
156.69
157.07
157.45
157.83
150
158.21
158.59
158.97
159.35
159.73
160.11
160.49
160.86
161.25
161.62
160
162.00
162.38
152.76
133.13
163.51
163.89
164.27
164.64
165.0
165.40
170
165.78
166.16
166.53
136.91
167.28
167.65
168.03
168.41
168.7
169.10
180
169.54
169.91
170.29
170.57
171.04
171.42
171.79
172.17
172.5
172.92
190
173.29
173.67
174.04
174.41
174.79
175.16
175.54
175.91
176.2
176.66
200
177.03
177.40
177.78
178.15
178.52
178.90
179.27
179.64
180.0
180.39
210
180.76
181.13
181.51
131.88
182.25
182.62
182.99
183.36
183.7
184.11
220
184.48
184.85
185.22
135.59
185.96
186.33
185.70
187.07
187.4
187.81
230
188.18
188.55
188.92
139.29
189.66
190.03
190.40
190.77
191.1
191.51
240
191.88
192.24
192.61
132.98
193.35
193.72
194.09
194.45
194.8
195.19
250
195.56
195.92
196.29
136.66
197.03
197.39
197.76
198.13
198.5
198.86
260
199.23
199.50
199.90
200.33
200.69
201.06
201.42
201.79
202.1
202.52
270
202.89
203.25
203.62
203.98
204.35
204.71
205.08
205.44
205.8
206.11
280
206.53
206.90
207.26
207.63
207.99
208.35
208.72
209.08
209.4
209.81
290
210.17
210.53
210.89
211.26
211.62
211.98
212.34
212.71
213.0
213.43
300
213.79
214.15
214.51
214.88
215.24
215.60
215.96
216.32
216.6
217.04
310
217.40
217.76
218.12
218.49
218.85
219.21
219.57
219.93
220.2
220.64
320
221.00
221.36
221.72
222.08
222.44
222.80
223.16
223.52
223.8
224.23
330
224.59
224.95
225.31
225.67
226.02
226.38
226.74
227.10
227.46
227.81
340
228.17
228.53
228.88
229.24
229.60
229.95
230.31
230.67
231.02
231.38
350
231.73
232.09
232.45
232.80
233.16
233.51
233.87
234.22
234.5
234.93