質問：
Temperature: Can the 7702 be used for measuring temperature with thermocouples?
回答：
Yes. Although the 7702 does not have automatic cold junction compensation (CJC), there are still three ways to measure temperatures with thermocouples with this module:
- By using the simulated CJC reference. This can be valuable when only the relative temperature rise is of interest, rather than the absolute temperature.
- By using an external CJC reference placed inside the module. This can be accomplished with an RTD or thermistor connected to channel #1. All T/Cs are then compensated for against this reference.
- By using an external CJC placed in a thermocouple 'patch panel.' This method is similar to the above description.
FAQ ID 71301
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