System accuracy specifications, N o t e – Agilent Technologies U2802A User Manual
Page 53
Product Specifications
4
Agilent U2802A 31-Channel Thermocouple Input User’s Guide
43
System Accuracy Specifications
The Agilent U2802A thermocouple input measurement accuracy with the
U2355A and U2356A is as shown in
Table 4- 1
,
Table 4- 2
, and
.
Table 4-1 U2802A measurement accuracy with U2355A or U2356A, at 23 °C ± 5 °C, with
different number of averaging points.
N O T E
• Assume a ±1 °C error in the CJ measurement due to sensor error and temperature
gradient error in the accuracy numbers in Table 4-1, Table 4-2, and Table 4-3 below.
• Table 4-1, Table 4-2, and Table 4-3 are derived from the U2802A and DAQ input accuracy
specifications without including the thermocouple error. Refer to
on page 46 for calculation methodology.
Thermocouple Measurements Accuracy
(U2355A, U2356A @ 23 °C ± 5°C)
T/C
Type
ITS-90
Temperature
Range (°C)
Optimum
Measurement
Range(°C)
Without
averaging
(± °C)
50 points
averaging
(± °C)
500 points
averaging
(± °C)
Low
High
Low
High
B
0
1820
1100
1820
1.9
1.2
1.0
400
1100
4.4
2.5
2.0
E
–270
1000
–150
1000
1.7
1.6
1.6
–200
–150
2.4
2.3
2.3
J
–210
1200
–150
1200
1.6
1.5
1.5
–210
–150
2.7
2.6
2.5
K
–270
1372
–100
1200
1.5
1.4
1.4
–200
–100
2.7
2.6
2.6
N
–270
1300
–100
1300
1.5
1.3
1.3
–200
–100
3.0
2.7
2.6
R
–50
1768
300
1760
2.0
1.4
1.3
–50
300
5.0
3.1
2.6
S
–50
1768
400
1760
2.1
1.6
1.4
–50
400
4.5
2.8
2.4
T
–270
400
–100
400
1.5
1.4
1.4
–200
–100
2.7
2.5
2.5
U2802A_UG.book Page 43 Friday, November 25, 2011 10:57 AM