Products > Instrumentation: Temperature

RTD's

RTD Temperature Transmitter. A measurement device that converts an RTD (Resistance Temperature Detector) resistance measurement to a current signal that can be used to operate an integrated digital or analog readout, or to control another device. The RTD component, also called a resistance thermometer, is a temperature sensor that exploits the change in electrical resistance of some materials with changing temperature.

Things to Consider When Purchasing This Product:

Material of resistance element (platinum most popular because has linear response to temperature changes), Temperature coefficient (ohms per ohm per degree C), Nominal resistance (IEC standard is 100 ohms at 0 degrees C), Temperature range of application (Depends on mechanical configuration and manufacturing methods --- RTD's may be used from -270 to 850 degrees C), Physical dimensions or size restrictions, Accuracy (IEC 751 and/or DIN 43760), Response time, Measurement current and self heating, Stability, Vibration resistance, Temperature shock resistance, Pressure sensitivity, Self inductance from sensing current, Capacitance, Lead wire configuration: 2-wire, 3-wire, 4-wire, 2-wire plus loop; Warranty