Appendix A
114
System Temperature Error for the DT9871
lists the typical accuracy of the DT9871 for each thermocouple type at several
temperature points over the dynamic range of the instrument.
The histograms shown in
characterize the Gaussian system noise
distribution for each of the available filter types on the DT9871. Note that converting
V error
to temperature error depends on thermocouple type. For example, a K thermocouple changes
approximately 39
V per degrees C; therefore, a noise level of 10
V adds 0.3
C error
(10
V / 39
V) for a type K thermocouple.
Table 11: Typical Thermocouple Accuracy of the DT9871
Input
Temperature
Thermocouple Type
a
a.
Conditions for accuracy measurements:
MEASURpoint warm-up time of 1 hour. Inclusive of typical 0.2
C CJC error (maximum CJC error is 0.3
C).
Exclusive of thermocouple errors.
J
K
T
E
S
R
B
N
–100
C
0.33
C
0.37
C
0.38
C
0.31
C
-----------
-----------
-----------
0.44
C
0
C
0.30
C
0.33
C
0.33
C
0.28
C
1.12
C
1.14
C
-----------
0.39
C
100
C
0.31
C
0.29
C
0.31
C
0.27
C
0.88
C
0.86
C
-----------
0.35
C
300
C
0.29
C
0.34
C
0.29
C
0.26
C
0.75
C
0.71
C
1.84
C
0.33
C
500
C
0.28
C
0.31
C
-----------
0.26
C
0.71
C
0.66
C
1.20
C
0.33
C
700
C
0.27
C
0.30
C
-----------
0.27
C
0.68
C
0.63
C
0.92
C
0.33
C
900
C
0.27
C
0.34
C
-----------
0.28
C
0.66
C
0.60
C
0.8
C
0.33
C
1100
C
0.28
C
0.34
C
-----------
-----------
0.64
C
0.58
C
0.71
C
0.34
C
1400
C
-----------
-----------
-----------
-----------
0.62
C
0.56
C
0.64
C
-----------
Summary of Contents for DT9871
Page 4: ......
Page 12: ...About this Manual 12 ...
Page 23: ...Part 1 Getting Started ...
Page 24: ......
Page 80: ...Chapter 5 80 ...
Page 81: ...Part 2 Using Your Instrument ...
Page 82: ......
Page 102: ...Chapter 6 102 ...
Page 108: ...Chapter 7 108 ...
Page 129: ...129 B Connector Pin Assignments ...
