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.
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.