Difference Between RTD & Thermocouple

What is RTD? RTDs stands for ‘Resistance Temperature Detectors’ and they are generally referred to as ‘Resistance Thermometers’. RTD can be defined as a temperature sensor that operates on the measurement principle where the materials’ electrical resistance changes with temperature. The American Society for Testing and Materials (ASTM) has defined the term resistance thermometer as follows:…

Components of RTD

Resistance Temperature Detector (RTD) is a temperature sensor which measures temperature using the principle that the resistance of a metal changes with temperature. In practice, an electrical current is transmitted through a piece of metal (the RTD element or resistor) located in proximity to the area where temperature is to be measured. The resistance value of…

Resistance Temperature Detectors (RTD) Construction

This particular design has a platinum element that is surrounded by a porcelain insulator. The insulator prevents a short circuit between the wire and the metal sheath. Inconel, a nickel-iron-chromium alloy, is normally used in manufacturing the RTD sheath because of its inherent corrosion resistance. When placed in a liquid or gas medium, the Inconel sheath quickly…

How to Read K5M Capacitor Values

Capacitors act as temporary batteries. They store an electric charge, but are incapable of creating one of their own. A capacitor’s storage capability is measured in farads and is called capacitance. One farad is a very large charge and few capacitors have that capacity. Most capacitors are measured in microfarads or in picofarads. The markings…