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Re: how to measure more than 500°C on the electronics ?

The AD597 IC does a job of interpreting the thermocouple signal, comparing and filtering it and outputting a signal of 10mV/degreeC.
You can not intervene on the thermocouple side because that is very sensitive. On the output side, it could output 8v if the ic is supplied with 8V+ (tho i guess its only getting 5v to start with). However it could still output more than 5v. But we can not read that with the uC analog pin direclty, and using a voltage divider or anything there is possible, but may and will slow down the signal. That could be an acceptable hack, but not a solid solution imo.

Could use another thermocouple IC which outputs like 5mV/degree, and get higher range but will be even more sensitive to noise.

Or could use a thermocouple IC that sends the readings without an analog pin, like max6675. For last case i think there may be some code somewhere, but have to check if the firmware still supports it.

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