Are thermocouples not effected by EMI? I've been reading a lot of papers lately about temperature measurement. Most them involve temperature measurement in electrochemical devices such as batteries and fuel cells. Using micro-thermocouples seems to be common practice but this makes absolutely no sense to me. How is it that you can use a thermocouple or thermistor to measure temperature in an environment where EM fields are prominent? Granted most batteries and fuel cells don't have current densities beyond 1.5 A/cm2 but can the induced current from the EMI just be integrated out?