Thermocouple Specifications; System Temperature Error - Data Translation DT9828 User Manual

Thermocouple Specifications

Table 22 lists the specifications for thermocouple channels on the DT9828 module.
Feature
Number of thermocouple channels
Thermocouple types (software-selectable)
A/D converter resolution
Full-scale input range
Aggregate sample rate (throughput)
Sampling mode
Accuracy (for Type K thermocouples)
Noise (for Type K thermocouples)
DC differential input impedance
Open thermocouple detect current
Input common mode voltage
Differential input voltage
Common mode rejection @ 50 Hz and 60 Hz
Warm-up time

System Temperature Error

Table 23 lists the typical accuracy errors and
DT9828 for each thermocouple type at several thermocouple measurement values.
The values in
±5° C ambient. The values in
module over the full specified temperature range of 0° C to 50° C.
Table 22: Thermocouple Specifications
Up to 8 differential thermocouples
J, K, T, B, E, N, R, S
24 bits
±156 mV
600 Samples/s maximum
Multiplexed
0.09° C typical; thermocouple at 25° C
(see
0.1° C peak to peak, typical, with moving average filter
(see
information)
10 M
250 nA
±500 V maximum
±10 V maximum (protection)
120 dB
10 minutes
Table 23 are the typical errors expected when the module is operating at 23° C
Table 24
Specifications
Table 23 and Table 24 for complete specs)
"Temperature Measurement Noise" on page 97
Ω
Table 24 lists the maximum accuracy errors of the
are the maximum errors expected when operating the
Specifications
for more
95