Working And Testing of RTD Sensor | PT100 | Resistance Temperature Detector | Electrical Technician

What is an RTD? RTD stands for Resistance Temperature Detector. RTDs are sometimes referred to generally as resistance thermometers. How do RTDs Work? RTDs work on a basic correlation between metals and temperature. As the temperature of a metal increases, the metal's resistance to the flow of electricity increases. Similarly, as the temperature of the RTD resistance element increases, the electrical resistance, measured in ohms (Ω), increases. RTD elements are commonly specified according to their resistance in ohms at zero degrees Celsius . The most common RTD specification is 100 Ω, which means that at zero degrees Celsius the RTD element should demonstrate 100 Ω of resistance. How to Test a Resistance Temperature Detector Resistance Temperature Detectors, or RTDs, work by measuring the resistivity of the metal the detector is constructed from at various temperatures. Metals have different resistivities, and metals with higher resistivities work best in RTDs. For this reason platinum is widely used in RTDs, as platinum has a high resistivity. The resistivity increases with temperature, so RTDs in freezing temperatures would show a lower resistivity than RTDs in boiling temperatures with room temperature resistivity being a mid-range number. Set your multimeter in resistance mode. Check the readings across the terminals of the RTD. At room temperature the reading should be around 110 ohms. The reading may vary depending on the metal in the RTD. Place the RTD in ice water. Give it a couple minutes to adjust and check the readings. You should get a lower number than the room temperature reading, around 100 ohms. Give the RTD time to adjust to room temperature after removing it from the ice water. Place the RTD in boiling water and check the readings again. The number should be higher than the room temperature reading if your RTD is functioning properly. ============================================================ Join this channel to support me and to download all the Pdf file of my Video 👇👇👇    / @electricaltechnician   ============================================================ Related Video Which you must watch👇👇👇 Automatic change over switch 👇👇👇    • How to make automatic changeover switch | ...   All battery has two terminal than why the mobile battery has 3 or 4 terminal 👇👇👇    • Why there are 3 or 4 Terminal in mobile ph...   electrical wiring class 👇👇👇    • How to do Wiring Using Contactor and its  ...   inverter wiring in switch board 👇👇👇    • Inverter Wiring in Board / inverter wiring...   how to check earthing at home 👇👇👇    • Check Earthing By Using Lamp & Multimeter ...   On delay timer vs off delay timer 👇👇👇    • timer क्या है / यह कैसे कार्य करता है / हम...   ============================================================ keyword for this video rtd working principle thermocouple working principle rtd working animation 3 wire rtd pt100 rtd pt100 temperature sensor thermocouple working principle resistance temperature detector resistance temperature detector in hindi types of rtd how to check rtd with multimeter rtd checking with multimeter rtd checking procedure rtd,pt100 thermocouple what is rtd rtd in hindi thermocouple vs rtd three wire rtd, rtd checking rtd sensor rtd pt100 rtd temperature sensor resistance temperature detector pt100 temperature sensor rtd checking with multimeter temperature sensor working temperature sensor how to test the rtd how to calculate rtd temperature how rtd works testing the rtd rtd calibration rtd sensor testing how to check rtd rtd check rtd testing what is pt100 sensor working of pt100 rtd temperature transmitter calibration how to test thermocouple how to test a thermocouple working principle of rtd #resistancetemperaturedetector #rtd #sensor #sensorcheck #heatsensorcheck