KAD/TDC/107 Thermocouple ADC (reference compensation, high accuracy, 4 Hz b/w) - 12 channels at 8 sps

Together the KAD/TDC/107 and the ACD/CJB/002 are used to digitize up to 12 thermocouple channels and 3 channels of module junction temperature.  

The module junction temperature is a signal indicating the temperature of the ACD/CJB/002; the temperature is measured by PT100 sensors, which are built into the ACD/CJB/002. 

Each compensation block signal is digitized and put to 2 x 65536 point linearization tables. One table is used to produce a compensation value to add to the other 12 channels (this table is thermocouple type specific) and the other table is used to scale the compensation block temperature between -55°C and +125°C. 

Thermocouple channels are sampled and then scaled to the voltage range, which covers the selected temperature range for the chosen thermocouple type. The junction offset is removed from each of the thermocouple channels. Finally, each thermocouple channel voltage is linearized to engineering units using a 65536 point linearization table specific to the thermocouple type and range selected.

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Features

  • 12 thermocouple input channels
  • ±0.55°C accuracy for K-type thermocouple (-50 to +150°C)
  • ±1.1°C accuracy for K-type thermocouple (outside -50 to +150°C range)
  • Junction temperature measurement
  • Programmable thermocouple type (per module)
  • Digital reference junction compensation
  • Up to eight samples per second (sps) per channel
  • 4 Hz fixed filtering cutoff
  • Cold junction block (ACD/CJB/002) included as dedicated connector assembly
  • Designed for isolated thermocouples

Applications

  • Temperature measurements with isolated thermocouples
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