RTD Sensor / Thermistor Sensor

RTD SensorsThe 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.

Thermistor Sensor for Rapid Detection

Temperature changes are detected rapidly with a thermistor sensor that delivers accuracy. The sensitive thermistor is comparable to an RTD because its resistors reflect resistance changes. The economical thermistor contains coated metal oxide materials.

This sensing instrument is often preferred when a smaller temperature range is acceptable. Contact our experts to choose the right thermistor temperature sensor for your thermal applications.

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