A temperature sensor is used in many commercial, and industrial applications to measure temperature. Temperature-sensing technology is incorporated into thermostats, thermometers, data loggers, and temperature meters.
Common industry temperature sensing devices include thermocouples, resistance temperature detectors (RTDs), thermistors, and infrared pyrometers. These sensors translate the temperature into a reference voltage or a resistance, which is then measured and processed and a numerical temperature value is computed. The benefit of these sensors over regular mercury thermometers is that they can be connected to computers and networked with other sensors and heating elements, enabling continuous, real-time control to maintain, monitor, and record temperatures.