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Device Description
WAGO-I/O-SYSTEM 750
750-469 2AI Thermocouple
Manual
Version 1.1.0
Table 11: Technical Data – Inputs
Internal resistance
1 MΩ
Cold junction compensation
At each pair of terminal blocks
Resolution (over entire range)
0.1 °C
Conversion time
320 ms (each channel)
Measuring error
25°C
< ±6 K (voltage input
< ±2 K; cold junction compensation <
±4 K)
Temperature coefficient
< ±0.2 K/K
Max. admissible current between the
ground contacts 3 and 7
100 mA
3.6.4
Communication
Table 12: Technical Data – Communication
Internal bit width (internal bus)
2-channel-operation
2 × 16 bits data
2 × 8 bits control/status (optional)
3.6.5
Climatic Environmental Conditions
Table 13: Technical Data – Climatic Environmental Conditions
Operating temperature range
0 °C … 55 °C
Operating temperature range for
components with extended
temperature range (750-xxx/025-xxx)
−20 °C … +60 °C
Storage temperature range
−25 °C … +85 °C
Storage temperature range for
components with extended
temperature range (750-xxx/025-xxx)
−40 °C … +85 °C
Relative humidity
Max. 5 % … 95 % without condensation
Resistance to harmful substances
Acc. to IEC 60068-2-42 and
IEC 60068-2-43
Maximum pollutant concentration at
relative humidity < 75 %
SO
2
≤
25 ppm
H
2
S
≤
10 ppm
Special conditions
Ensure that additional measures for
components are taken, which are used in
an environment involving:
– dust, caustic vapors or gases
– ionizing radiation