11. There's a thermocouple that senses when the pilot turns on. 12. :Thermocouples are sensitive to EM radiation ( among other devices ). 13. Could you install a thermometer or thermocouple or an oil temp thermometer? 14. Usually a number of thermocouples connected in series called thermopiles are used. 15. Pay attention to the thermocouples used in the acceptance inspection. 16. Don't accept impromptu thermocouples made from extension wire twisted together. 17. A zigzagging thermocouple reading on a profile graph indicates loosely attached thermocouples. 18. A zigzagging thermocouple reading on a profile graph indicates loosely attached thermocouples . 19. The spatial resolution of SThM critically depends on the thermocouple sensor size. 20. Sensitive portable thermocouple -type instruments were used for measurement.