Resistance temperature detectors (RTDs), also known as resistance thermometers, accurately sense process temperatures with an excellent degree of repeatability and interchangeability of elements. The RTD is composed of certain metallic elements whose change in resistance is a function of temperature. In operation, a small excitation current is passed across the element, and the voltage, which is proportional to resistance, is then measured and converted to units of temperature calibration. The RTD measurement element is manufactured by winding a wire (wire wound elements) or plating a film (thin film elements) on a ceramic or glass core and sealing the element within a ceramic or glass capsule.RTD's exhibit excellent accuracy over a wide temperature range.They are more accurate and repeatable over long periods of time than other sensors like Thermocouples, Bi-metal Thermometers, or Thermistors. They do however have a lower temperature range, slower response time, and higher cost than the other options.
Since most resistance temperature detectors and resistance thermometers have a low initial resistance, often 100 ohms, and have a small change in resistance per unit of temperature range, the resistance of the lead wire is often compensated for with a three or four wire bridge configuration built into the measuring devices. By selecting the proper elements and protective sheathing, RTDs can operate in a temperature range of (-200 to 600) °C [-328 to 1112] °F.

Tempdura RTD sensors are generally chosen over our thermocouples in applications which require a higher accuracy and higher repeatability of temperature measurements. Due to their design, our RTDs are also easier to install and calibrate.From single- or dual-element RTDs, PT100s-PT1000s, to Sanitary CIP configurations, we have the right RTD type for your job. If what you need is not available from our catalog, our product engineers will design an RTD measurement device for your specific application, including temperature sensor assemblies that require connection heads, thermowells and/or transmitters.
We custom designs and manufactures RTDs (Resistance Temperature Detectors) to perfectly fit your requirements. Utilizing PT100 to PT1000 elements, our sensors have a reputation for stability, repeatability and accuracy. From simple applications to the most unforgiving environments, we can build anything you need. Browse our sample set of applications below to get an idea of the wide range we cater to!