U2352A Datasheet, PDF (21/25 Pages) Keysight Technologies – USB Modular Multifunction Data Acquisition Devices

System accuracy specifications
The U2802A system accuracy specifications are shown in Table 1, Table 2, and Table 3. These measurements are derived from
the U2802A and DAQ input accuracy specifications without including the thermocouple error. Refer to “Calculating System
Accuracy” section in the Keysight U2802A 31-Channel Thermocouple Input Device User’s Guide for calculation methodology.
Table 1. Measurement accuracy of the U2355A and U2356A at 23 °C ± 5 °C
T/C type
B
E
J
K
N
R
S
T
Thermocouple measurement accuracy (U2355A, U2356A at 23 °C ± 5 °C)
ITS-90 Temperature range (°C)
Low
High
0
1820
–270
1000
–210
1200
–270
1372
–270
1300
–50
1768
–50
1768
–270
400
Optimum measurement
range(°C)
Low
High
1100
1820
400
1100
–150
1000
–200
–150
–150
1200
–210
–150
–100
1200
–200
–100
–100
1300
–200
–100
300
1760
–50
300
400
1760
–50
400
–100
400
–200
–100
Without
averaging
(± °C)
1.9
4.4
1.7
2.4
1.6
2.7
1.5
2.7
1.5
3.0
2.0
5.0
2.1
4.5
1.5
2.7
50 points
averaging
(± °C)
1.2
2.5
1.6
2.3
1.5
2.6
1.4
2.6
1.3
2.7
1.4
3.1
1.6
2.8
1.4
2.5
500 points
averaging
(± °C)
1.0
2.0
1.6
2.3
1.5
2.5
1.4
2.6
1.3
2.6
1.3
2.6
1.4
2.4
1.4
2.5
Table 2. Measurement accuracy of the U2355A at 0 to 18 °C and 28 to 45 °C
T/C type
B
E
J
K
N
R
S
T
Thermocouple measurement accuracy (U2355A at 0 to 18 °C and 28 to 45 °C)
ITS-90 Temperature range (°C)
Low
High
0
1820
–270
1000
–210
1200
–270
1372
–270
1300
–50
1768
–50
1768
–270
400
Optimum measurement range
(°C)
Low
High
1100
1820
400
1100
–150
1000
–200
–150
–150
1200
–210
–150
–100
1200
–200
–100
–100
1300
–200
–100
300
1760
–50
300
400
1760
–50
400
–100
400
–200
–100
21
Without
|averaging
(± °C)
3.4
7.5
2.7
3.8
2.5
4.2
2.9
4.3
2.6
4.9
3.8
8.5
4.2
7.7
2.4
4.3
50 points
averaging
(± °C)
2.4
3.6
2.6
3.6
2.4
4.0
2.8
4.0
2.5
4.2
3.1
4.6
3.4
4.2
2.2
4.3
500 points
averaging
(± °C)
2.2
2.2
2.5
3.6
2.4
3.9
2.8
3.9
2.5
4.0
3.0
3.3
3.2
3.1
2.2
3.9