... be RTD or thermocouple 2.PID output pt100 temperature sensor controller1. Product HighlightsThermocouple: T, R, J, B, S, K, E, ... boiler by measuring the surface temperature of theboiler. A surface mounted, Type K thermocouple is chosen. Boiler surface is to be ... . The controller is in normal operation mode.XMT7100 pt100 temperature sensor controller