Model DT333-0700
4-Wire mV/TC Dual Transmitter w/USB
Acromag, Inc. Tel: 248-295-0880
- 18 -
http://www.acromag.com
- 18 -
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 each end. To discern the actual
temperature being sensed at the remote end (in the table above), the unit must subtract the equivalent thermoelectric
voltage of the other 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 reading at channel 1 or channel 2 and
remove the portion of the measured voltage that corresponds to its cold junction.
