RTD Sensors

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 industrial 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 substituted with no recalibration needed.

Industrial Temperature Sensors

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.

Compare RTD Sensors Industrial temperature sensors at Hi-Watt with other common temperature probes, such as thermocouples and thermistors, to discover the ideal option for your industrial application. Learn more about an RTD, or resistance temperature detector, and how it can offer you the resistance and lifespan you need to keep your facility going. Don’t let a faulty sensor or improper replacement probe prevent you from keeping your processing facility functioning.

Thermistors vs. Thermocouples

A thermistor is used in many of the same applications as an RTD but includes either a polymer or ceramic resistor instead of a typical metal resistor. When you compare thermistor vs thermocouple, you’ll find a thermistor is ideal for finding minute changes in temperature but doesn’t have the same temperature range capability of a thermocouple, which can handle a temperature range up to -200 to 350 degrees Celsius.

Thermocouples vs. RTD Sensors

Compare an RTD vs thermocouple to discover the power of an RTD in the right application. Compared to a thermocouple, an RTD has a relatively small temperature range, though not as small as a thermistor. An RTD offers linearity and the highest levels of temperature measurement accuracy, while a thermocouple is best suited for wide, non-linear temperature readings.

The sensor you need depends on your application. While all three of these temperature probes are used to measure changes in heat, none compare with RTD sensors in terms of accuracy. Thermocouple sensors, on the other hand, have by far the widest range of operating temperatures.

Find Your Industrial Temperature Sensor Today

At Hi-Watt, we offer all the temperature sensor options you need for most industries. Whether you’re operating a plastic processing, injection mold tooling or aerospace facility, contact us today to learn more about these sensor options. Speak to one of our tech support agents today and work with us to schedule a shipment of leading sensors to keep your company moving forward.

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