In AD597 datasheet (Type K Thermocouple Conditioner) the temperature range is -200°C...+1250°C.
And +1250°C measurement is achievable under +15V power supply.
I'm interested in increasing upper limit up to +1500°C
Would stay the limit +1250°C really unchangeable, if to use power supply -Vs=0V, +Vs=+30V?
If such power supply increases measuring temperature limit up to +2500°C, what about error for +1500°C?
What is the best connection for thermocouple for 1500°C - should be negative wire (chromel) connected to ground or not?