Product Specifications

4

Product Characteristics

GENERAL CHARACTERISTICS

Number of channels

31 differential and 1 CJC

 

 

Input voltage range for voltage mode

±10 V (signal + common mode)

 

 

Input voltage (thermocouple mode)

±100 mV

 

 

Sampling rate for thermocouple mode

10 kSa/s total for all channels

 

 

Sampling rate for overall module

500 kSa/s

 

 

Thermocouple types

J, K, R, S, T, N, E and B

 

 

 

 

INPUT SPECIFICATIONS

 

 

 

Accuracy (thermocouple mode)

 

Overall gain error

0.06% (23 °C ± 5 °C)

Overall offset error

15 µV (without zeroing) (23 °C ± 5 °C)

 

6 µV (with zeroing)

Nonlinearity

< 0.005% of Full Scale Range

 

 

System noise (rms)

 

Gain (x1)

100 µVrms

Gain (x100)

5 µVrms

 

 

Common mode rejection ratio (60 Hz)

 

Voltage mode

> 60 dB

Thermocouple mode

> 80 dB

 

 

Cold junction accuracy

±1.0 °C typical (23 °C ± 5°C)

 

±1.5 °C typical (0 °C to 18 °C, 28 °C to 55 °C)

 

 

 

 

INPUT CHARACTERISTICS

 

 

 

Bandwidth (voltage mode)

> 500 kHz

 

 

Bandwidth (thermocouple mode)

4.0 Hz

 

 

Agilent U2802A 31-Channel Thermocouple Input User’s Guide

49

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Agilent Technologies U2802A manual Product Characteristics, General Characteristics