Model DT233-0600
Dual Two-Wire mV/TC Input Transmitters
Acromag, Inc. Tel: 248-295-0880
- 22 -
http://www.acromag.com
- 22 -
https://www.acromag.com
Thermocouple Millivoltage Versus Temperature Reference Table
Thermocouple milliVoltage Versus Temperature (Per National Institute of Standards and Technology (NIST/ITS-90) Thermocouple Tables)
1
TEMP
Thermoelectric Voltage In milliVolts (With Reference Junction at 0
C)
C
J
K
T
E
R
S
B
N
- 260
---
-6.232
---
---
---
---
- 250
---
---
-6.180
---
---
---
---
---
- 230
---
---
-6.007
---
---
---
---
-4.226
- 210
-8.095
---
-5.753
---
---
---
---
-4.083
- 200
-7.890
-5.891
-5.603
-8.825
---
---
---
-3.990
- 150
-6.500
-4.913
-4.648
-7.279
---
---
---
-3.336
- 100
-4.633
-3.554
-3.379
-5.237
---
---
---
-2.407
- 50
-2.431
-1.889
-1.819
-2.787
-0.226
-0.236
---
-1.269
0
0.000
0.000
0.000
0.000
0.000
0.000
---
0.000
+ 50
2.585
2.023
2.036
3.048
0.296
0.299
---
1.340
+ 100
5.269
4.096
4.279
6.319
0.647
0.646
---
2.774
+ 150
8.010
6.138
6.704
9.789
1.041
1.029
---
4.302
+ 200
10.779
8.138
9.288
13.421
1.469
1.441
---
5.913
+ 250
13.555
10.153
12.013
17.181
1.923
1.874
---
7.597
+ 260
14.110
10.561
12.574
17.945
2.017
1.962
0.317
7.941
+ 300
16.327
12.209
14.862
21.036
2.401
2.323
0.431
9.341
+ 350
19.090
14.293
17.819
24.964
2.896
2.786
0.596
11.136
+ 390
21.297
15.975
20.255
28.146
3.304
3.164
0.746
12.603
+ 400
21.848
16.397
20.872
28.946
3.408
3.259
0.787
12.974
+ 450
24.610
18.516
---
32.965
3.933
3.742
1.002
14.848
+ 500
27.393
20.644
---
37.005
4.471
4.233
1.242
16.748
+ 550
30.216
22.776
---
41.053
5.021
4.732
1.505
18.672
+ 600
33.102
24.905
---
45.093
5.583
5.239
1.792
20.613
+ 650
36.071
27.025
---
49.116
6.157
5.753
2.101
22.556
+ 700
39.132
29.129
---
53.112
6.743
6.275
2.431
24.527
+ 760
42.919
31.628
---
57.870
7.461
6.913
2.854
26.883
+ 800
---
33.275
---
61.017
7.950
7.345
3.154
28.455
+ 900
---
37.326
---
68.787
9.205
8.449
3.957
32.371
+ 950
---
39.314
---
72.603
9.850
9.014
4.387
34.319
+1000
---
41.276
---
76.373
10.506
9.587
4.834
36.256
+1200
---
48.828
---
---
13.228
11.951
6.786
43.846
+1300
---
52.410
---
---
14.629
13.159
7.848
47.513
+1372
---
54.886
---
---
15.645
14.033
8.642
---
+1400
---
---
---
---
16.040
14.373
8.956
---
+1600
---
---
---
---
18.849
16.777
11.263
---
+1700
---
---
---
---
20.222
17.947
12.433
---
+1750
---
---
---
---
20.877
18.503
13.014
---
+1768
---
---
---
---
21.101
18.693
13.223
---
+1800
---
---
---
---
---
---
13.591
---
+1820
---
---
---
---
---
---
13.820
---
1
Note:
Shaded cells refer to the calibration range end points used to calibrate the full range of the T/C type for this
model. Bold column entries refer to the nominal T/C input range end points of this model.
2
Note:
CJC temperature values are resolved to 0.05°C increments using internal lookup tables corresponding to the T/C
type. This means that if an input is scaled to a small input span, its reading may appear less accurate with CJC ON, as
±0.05°C becomes a greater percentage of a smaller span.
The voltage measured from a T/C reflects the difference in temperature between its two ends. To discern the actual
temperature at the remote/hot end (in the table above), the unit must subtract the equivalent thermoelectric voltage of
the opposite/cold end from its measurement (usually referred to as its Cold Junction reading). This unit senses the
temperature of its TB1 and TB3 terminals to cold-junction compensate its T/C readings and remove the portion of the
measured voltages that correspond to their cold junctions.
