The accurate RTD sensor operates on the principle that metal’s electrical resistance will change in response to temperature. We offer the resistance temperature detectors that sense temperature with a high degree of accuracy, repeatability and interchangeability.
An RTD element can be a wire-wound or thin film type. The wire or film is located on a ceramic or glass core. The elements of these temperature sensors are then sealed within protective capsules of ceramic or glass.
A resistance temperature detector receives an excitation current across the element, and then the voltage is measured. This measurement is calculated as a temperature calibration. The broad range RTD temperature is normally -200° to 650°C (-328° to 1202°F). Platinum resistance elements are designed to supply precise and repeatable temperature.
RTD Temperature Sensors and Accessories:
We distribute the best RTD temperature sensors for excellence in laboratory and industry processes. Most RTD sensors have a low initial resistance, commonly 100 ohms.
They also have a minimal resistance change per unit of temperature range. Because of this, a multiple wire bridge is built into the RTD to compensate for the lead wire resistance. Our standard and heavy duty resistance temperature sensing products include the following:
- Tube and wire
- Metal transition with spring strain relief
- Standard and mini plug
- Connection head
We also supply reliable RTD sensor accessories including standard and mini connectors, extension wire and connection heads.
Watlow Resistance Temperature Sensors
Watlow manufactures a variety of RTD sensors that are specially designed to ensure precise and repeatable temperature measurement. Watlow RTD sensors are built to meet the most demanding industrial applications while providing a lower total cost of ownership for our customers.
Strain-free construction provides dependable, accurate readings and allows elements from different lots to be substituded with no recalibration needed.
Typical applications include: Stoves, grills, fryers, and other food equipment, Textile production, Plastics processing, Petrochemical processing, Air, gas and liquid temperature measurement, Semiconductor processing as well as Bearing and gear boxes.
