RTDs are sensors used to measure temperature by relating the resistance of the RTD element to the temperature. Most RTD elements consist of wires finely wrapped around a ceramic or glass core. The RTD element is made from a pure material which is usually platinum, nickel or copper. Platinum is often the choice in resistance thermometers because it can measure different extreme endpoint measurements, is very unreactive, and has a linear resistance relationship with temperature. The material has a calculable change in resistance as the temperature changes and this change is used to determine the temperature. RTDs are typically used to measure the temperature of fluids or gases in pipes and tanks. Type J thermocoupleThe thermocouple works using the potential difference between 2 different metals subject to a thermal gradient (in this case, it is the PT 100 Ref /C). The thermocouple works with electrical or electronic circuits that convert the small potential difference into a calibrated value of voltage or current. Type J thermocouple is used to monitor temperatures of inert materials and under vacuum...