铜-康铜热电偶以其灵敏度高、稳定可靠、抗震抗摔、互换性好、价格低廉、适用于远距离测温和自动控制等优势,在农业和制冷工程中发挥着重要作用。通过选择铜-康铜热电偶的制作方法和标定方式,进行多项式回归分析,表明热镀锡焊测头非标准分度的铜-康铜热电偶在-35～100℃范围内的线性及一致性都较好,适于实验室、农业和制冷工程测温应用。
热电偶电路示意图：
铜—康铜热电偶分度表:
温度℃ 0 1 2 3 4 5 6 7 8 9
热 电 动 势 mV
-40
-30
-20
-10
0-
0+
10
20
30
40
50
60
70
80
90
100
110
120
130
140
150
160
170
180
190
200
210
220
230
240 -1.475
-1.121
-0.757
-0.383
-0.000
0.000
0.391
0.789
1.196
1.611
2.035
2.467
2.908
3.357
3.813
4.277
4.749
5.227
5.712
6.204
6.702
7.207
7.718
8.235
8.757
9.286
9.820
10.360
10.905
11.450 -1.510
-1.157
-0.794
-0.421
-0.039
0.039
0.430
0.830
1.237
1.653
2.078
2.511
2.953
3.402
3.859
4.324
4.796
5.275
5.761
6.254
6.753
7.258
7.769
8.287
8.810
9.339
9.874
10.414
10.960
11.511 -1.544
-1.192
-0.830
-0.458
-0.077
0.078
0.470
0.870
1.279
1.695
2.121
2.555
2.997
3.447
3.906
4.371
4.844
5.324
5.810
6.303
6.803
7.309
7.821
8.339
8.863
9.392
9.928
10.469
11.015
11.566 -1.579
-1.228
-0.867
-0.495
-0.116
0.117
0.510
0.911
1.320
1.738
2.164
2.599
3.042
3.493
3.952
4.418
4.891
5.372
5.859
6.353
6.853
7.360
7.872
8.391
8.915
9.446
9.982
10.523
11.070
11.622 -1.614
-1.263
-0.903
-0.534
-0.154
0.156
0.549
0.951
1.361
1.780
2.207
2.643
3.087
3.538
3.998
4.465
4.939
5.420
5.908
6.403
6.903
7.411
7.924
8.443
8.968
9.499
10.036
10.578
11.128
11.677 -1.648
-1.299
-0.904
-0.571
-0.193
0.195
0.589
0.992
1.403
1.822
2.250
2.687
3.131
3.584
4.044
4.512
4.987
5.469
5.957
6.452
6.954
7.462
7.975
8.495
9.021
9.553
10.090
10.632
11.180
11.733 -1.682
-1.334
-0.976
-0.602
-0.231
0.234
0.629
1.032
1.444
1.865
2.294
2.731
3.176
3.630
4.091
4.559
5.035
5.517
6.007
6.502
7.004
7.513
8.027
8.548
9.074
9.606
10.144
10.687
11.235
11.788 -1.717
-1.370
-1.013
-0.646
-0.269
0.273
0.669
1.073
1.486
1.907
2.337
2.775
3.221
3.676
4.137
4.607
5.083
5.566
6.056
6.552
7.055
7.564
8.079
8.600
9.127
9.659
10.198
10.741
11.290
11.844 -1.751
-1.405
-1.049
-0.683
-0.307
0.312
0.709
1.114
1.528
1.950
2.380
2.819
3.266
3.721
4.184
4.654
5.131
5.615
6.105
6.602
7.106
7.615
8.131
8.652
9.180
9.713
10.252
10.796
11.345
11.900 -1.785
-1.440
-1.085
-0.720
-0.345
0.351
0.749
1.155
1.569
1.992
2.424
2.864
3.312
3.767
4..231
4.701
5.179
5.663
6.155
6.652
7.150
7.660
8.183
8.705
9.233
9.767
10.306
10.851
11.401
11.956