Other Parts Discussed in Thread: TMP75, LM94022
Hi Expert,
Since customer need to connect the converter to thermocouples to sense temperature, we have to confirm if ADS122C04 can replace to MCP3422.
some of questions need you help to check as below:
- If they use all 4 channels for 2 thermocouples, how do they apply the cold junction compensation? Can it be done by using a TMP75’s temp reading?
- Is there any specific reason that customer has to LM94022 for the CJC instead of other sensor like TMP75?
- As datasheet use LM94022 & ADS122C04, how do we make sure the cold junction compensation works? Currently my concern is at the red mark in isothermal block, I want to confirm how we implement this routing for cold bath for the thermocouple which measures the hot point.
Regards,
Mark