18019926927

Pt100热电阻分度表2024-06-03 10:56:53


温度

0

1

2

3

4

5

6

7

8

9

电阻值Ω

-200

18.52










-190
-180
-170
-160
-150

22.83
27.10
31.34
35.54
39.72

22.40
26.67
30.91
35.12
39.31

21.97
26.24
30.49
34.70
38.89

21.54
25.82
30.07
34.28
38.47

21.11
25.39
29.64
33.86
38.05

20.68
24.97
29.22
33.44
37.64

20.25
24.54
28.80
33.02
37.22

19.82
24.11
28.37
32.60
36.80

19.38
23.68
27.95
32.18
36.38

18.95
23.25
27.52
31.76
35.96

-140
-130
-120
-110
-100

43.88
48.00
52.11
56.19
60.26

43.46
47.59
51.70
55.79
59.85

43.05
47.18
51.29
55.38
59.44

42.63
46.77
50.88
54.97
59.04

42.22
46.36
50.47
54.56
58.63

41.80
45.94
50.06
54.15
58.23

41.39
45.53
49.65
53.75
57.82

40.97
45.12
49.24
53.34
57.41

40.56
44.70
48.83
52.93
57.01

40.14
44.29
48.42
52.52
56.60

-90
-80
-70
-60
-50

64.30
68.33
72.33
76.33
80.31

63.90
67.92
71.93
75.93
79.91

63.49
67.52
71.53
75.53
79.51

63.09
67.12
71.13
75.13
79.11

62.68
66.72
70.73
74.73
78.72

62.28
66.31
70.33
74.33
78.32

61.88
65.91
69.93
73.93
77.92

61.47
65.51
69.53
73.53
77.52

61.07
65.11
69.13
73.13
77.12

60.66
64.70
68.73
72.73
76.73

-40
-30
-20
-10
0

84.27
88.22
92.16
96.09
100.00

83.87
87.83
91.77
95.69
99.61

83.48
87.43
91.37
95.30
99.22

83.08
87.04
90.98
94.91
98.83

82.69
86.64
90.59
94.52
98.44

82.29
86.25
90.19
94.12
98.04

81.89
85.85
89.80
93.73
97.65

81.50
85.46
89.40
93.34
97.26

81.10
85.06
89.01
92.95
96.87

80.70
84.67
88.62
92.55
96.48

0
10
20
30
40

100.00
103.90
107.79
111.67
115.54

100.39
104.29
108.18
112.06
115.93

100.78
104.68
108.57
112.45
116.31

101.17
105.07
108.96
112.83
116.70

101.56
105.46
109.35
113.22
117.08

101.95
105.85
109.73
113.61
117.47

102.34
106.24
110.12
114.00
117.86

102.73
106.63
110.51
114.38
118.24

103.12
107.02
110.90
114.77
118.63

103.51
107.40
111.29
115.15
119.01

50
60
70
80
90

119.40
123.24
127.08
130.90
134.71

119.78
123.63
127.46
131.28
135.09

120.17
124.01
127.84
131.66
135.47

120.55
124.39
128.22
132.04
135.85

120.94
124.78
128.61
132.42
136.23

121.32
125.16
128.99
132.80
136.61

121.71
125.54
129.37
133.18
136.99

122.09
125.93
129.75
133.57
137.37

122.47
126.31
130.13
133.95
137.75

122.86
126.69
130.52
134.33
138.13

100
110
120
130
140

138.51
142.29
146.07
149.83
153.58

138.88
142.67
146.44
150.21
153.96

139.26
143.05
146.82
150.58
154.33

139.64
143.43
147.20
150.96
154.71

140.02
143.80
147.57
151.33
155.08

140.40
144.18
147.95
151.71
155.46

140.78
144.56
148.33
152.08
155.83

141.16
144.94
148.70
152.46
156.20

141.54
145.31
149.08
152.83
156.58

141.91
145.69
149.46
153.21
156.95

150
160
170
180
190

157.33
161.05
164.77
168.48
172.17

157.70
161.43
165.14
168.85
172.54

158.07
161.80
165.51
169.22
172.91

158.45
162.17
165.89
169.59
173.28

158.82
162.54
166.26
169.96
173.65

159.19
162.91
166.63
170.33
174.02

159.56
163.29
167.00
170.70
174.38

159.94
163.66
167.37
171.07
174.75

160.31
164.03
167.74
171.43
175.12

160.68
164.40
168.11
171.80
175.49

200
210
220
230
240

175.86
179.53
183.19
186.84
190.47

176.22
179.89
183.55
187.20
190.84

176.59
180.26
183.92
187.56
191.20

176.96
180.63
184.28
187.93
191.56

177.33
180.99
184.65
188.29
191.92

177.69
181.36
185.01
188.66
192.29

178.06
181.72
185.38
189.02
192.65

178.43
182.09
185.74
189.38
193.01

178.79
182.46
186.11
189.75
193.37

179.16
182.82
186.47
190.11
193.74

250
260
270
280
290

194.10
197.71
201.31
204.90
208.48

194.46
198.07
201.67
205.26
208.84

194.82
198.43
202.03
205.62
209.20

195.18
198.79
202.39
205.98
209.56

195.55
199.15
202.75
206.34
209.91

195.91
199.51
203.11
206.70
210.27

196.27
199.87
203.47
207.05
210.63

196.63
200.23
203.83
207.41
210.98

196.99
200.59
204.19
207.77
211.34

197.35
200.95
204.55
208.13
211.70

300
310
320
330
340

212.05
215.61
219.15
222.68
226.21

212.41
215.96
219.51
223.04
226.56

212.76
216.32
219.86
223.39
226.91

213.12
216.67
220.21
223.74
227.26

213.48
217.03
220.57
224.09
227.61

213.83
217.38
220.92
224.45
227.96

214.19
217.74
221.27
224.80
228.31

214.54
218.09
221.63
225.15
228.66

214.90
218.44
221.98
225.50
229.02

215.25
218.80
222.33
225.85
229.37

350
360
370
380
390

229.72
233.21
236.70
240.18
243.64

230.07
233.56
237.05
240.52
243.99

230.42
233.91
237.40
240.87
244.33

230.77
234.26
237.74
241.22
244.68

231.12
234.61
238.09
241.56
245.02

231.47
234.96
238.44
241.91
245.37

231.82
235.31
238.79
242.26
245.71

232.17
235.66
239.13
242.60
246.06

232.52
236.00
239.48
242.95
246.40

232.87
236.35
239.83
243.29
246.75

400
410
420
430
440

247.09
250.53
253.96
257.38
260.78

247.44
250.88
254.30
257.72
261.12

247.78
251.22
254.65
258.06
261.46

248.13
251.56
254.99
258.40
261.80

248.47
251.91
255.33
258.74
262.14

248.81
252.25
255.67
259.08
262.48

249.16
252.59
256.01
259.42
262.82

249.50
252.93
256.35
259.76
263.16

245.85
253.28
256.70
260.10
263.50

250.19
253.62
257.04
260.44
263.84

450
460
470
480
490

264.18
267.56
270.93
274.29
277.64

264.52
267.90
271.27
274.63
277.98

264.86
268.24
271.61
274.96
278.31

265.20
268.57
271.94
275.30
278.64

265.53
268.91
272.28
275.63
278.98

265.87
269.25
272.61
275.97
279.31

266.21
269.59
272.95
276.30
279.64

266.55
269.92
273.29
276.64
279.98

266.89
270.26
273.62
276.97
280.31

267.22
270.60
273.96
277.31
280.64

500
510
520
530
540

280.98
284.30
287.62
290.92
294.21

281.31
284.63
287.95
291.25
294.54

281.64
284.97
288.28
291.58
294.86

281.98
285.30
288.61
291.91
295.19

282.31
285.63
288.94
292.24
295.52

282.64
285.96
289.27
292.56
295.85

282.97
286.29
289.60
292.89
296.18

283.31
286.62
289.93
293.22
296.50

283.64
286.85
290.26
293.55
296.83

283.97
287.29
290.59
293.88
297.16

550
560
570
580
590

297.49
300.75
304.01
307.25
310.49

297.81
301.08
304.34
307.58
310.81

298.14
301.41
304.66
307.90
311.13

298.47
301.73
304.98
308.23
311.45

298.80
302.06
305.31
308.55
311.78

299.12
302.38
305.63
308.87
312.10

299.45
302.71
305.96
309.20
312.42

299.78
303.03
306.28
309.52
312.74

300.10
303.36
306.61
309.84
313.06

300.43
303.69
306.93
310.16
313.39

600
610
620
630
640

313.71
316.92
320.12
323.30
326.48

314.03
317.24
320.43
323.62
326.79

314.35
317.56
320.75
323.94
327.11

314.67
317.88
321.07
324.26
327.43

314.99
318.20
321.39
324.57
327.74

315.31
318.52
321.71
324.89
328.06

315.64
318.84
322.03
325.21
328.38

315.96
319.16
322.35
325.53
328.69

316.28
319.48
322.67
325.84
329.01

316.60
319.80
322.98
326.16
329.32

650
660

329.64
332.79

329.96

330.27

330.59

330.90

331.22

331.53

331.85

332.16

332.48


0850

Rt=R01+A*t+B*t^2

-2000

Rt=R0[1+A*t+Bt^2+C(t-100)^3]

R00度是铂电阻的阻值

A=3.940*103次幂

 

B=-5.802107次幂

C=-4.274乘10的负12

Pt100,就是说它的阻值在0度时为100欧姆,负200度时为18.52欧姆,200度时为175.86欧姆,800度时为375.70欧姆。

 

热电阻公式都是Rt=Ro(1+A*t+B*t*t);Rt=Ro[1+A*t+B*t*t+C(t-100)*t*t*t] 的形式,t表示摄氏温度,Ro是零摄氏度时的电阻值,ABC都是规定的系数,对于Pt100,Ro就等于100


 

Pt100温度传感器的主要技术参数如下:测量范围:-200+850;允许偏差值△℃A±0.150.002│t│), B±0.300.005│t│);热响应时间<30s;最小置入深度:热电阻的最小置入深度≥200mm;允通电流≤5mA。另外,Pt100温度传感器还具有抗振动、稳定性好、准确度高、耐高压等优点。

 

看到了?电流不能大于5mA,而电阻是随温度变化的,所以电压也要注意。

 

为了提高温度测量的准确性,应使用1V电桥电源、A/D转换器的5V参考电源要稳定在1mV级;在价格允许的情况下,Pt100传感器、A/D转换器和运放的线性度要高。同时,利用软件矫正其误差,可以使测得温度的精度在±0.2℃。


T18019926927
T18019926927
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