Hi, I install AD597AHZ as thermocouple converter at the mining dump truck, for exhaust gas temperature measurement. AD597AHZ power suplly is protected and become galvanically diconnected when engine stopped. But sometimes AD597AHZ got burnt: I see 0mV at output or some chaotically changing value instead of real output 10mV/C. I suspect overvoltage at inputs, but I am not 100% sure. Can anybody suggest am I right or not? If I am right, would you please suggest how can I protect AD597 inputs? BR!