What is the difference between RTD and Thermocouple?

RTD stands for a resistance temperature detector, which means that it operates based on the variation of challenge with temperature. This deviation of resistance takes place in a uniform matter with temperature changes. RTD consists of a component that is wrapped around a core made of either glass or ceramic. This covering is done to protect the fragile wire. RTD is reliable in terms of measurements and temperatures. It is expensive to install, but the results are conclusive.

On the other hand, Thermocouple works on the notion that when two separate metals are joined, there is a prospective difference at the point of contact that varies with temperature alterations. The alloys that are designated to connect known and recorded potential differences for various temperatures. This application is widely used in the industrial industry. Thermocouples can convert heat into electric power. While RTD can be easily recalibrated, thermocouples are challenging to recalibrate. RTD is more accurate for small temperature variations.

RTD is an acronym for Resistance Temperature Detectors. It is also known as just Resistance Thermometers. RTD is a temperature sensor uses to measure how the electrical resistance of material changes when the temperature changes. The thermocouple is the thermometric thermometer.

One key difference between the two is the size of the sensor. An RTD has a large sensor, while thermocouples have a smaller sensor. The size of the sensor also relates to the reaction time. RTD's will have a long reaction time, while thermocouples have a small one. They also differ in the type of connection used. RTD will use CU wires, while Thermocouples will use either an extension wire or a thermo-wire.

If you would like to compare the two, you should realize that the RTD is considered to be more accurate as compared to the thermocouple. For example, if you would compare the accuracy, you will see that the accuracy of the RTD is at 0.1Degrees The accuracy of the thermocouple is going to be at 1.0 degrees.

The linearity of the two is also going to be different. You can expect that the temperature resistance of RTD is going to be different as compared to the S Plot of the thermocouple. The measurement that they can provide will also be different because the thermocouple can be used to measure up to 2700 degrees Fahrenheit while the RTD can measure up to 1000 Degrees Fahrenheit.