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RTD Sensors

A reliable source for RTD Sensors information and leading RTD Sensors Companies & Manufacturers.

The majority of the time these elements are made up of coiled wire that is spun around glass or ceramic. This material has a predictable change in resistance which is directly related to the change in temperature, because of this relationship it becomes simple to figure out the temperature based on the resistance. Read More…

RTD Sensors RTD sensors, or resistance temperature detectors, can also be referred to as resistance thermometers as they are used to measure the temperature through a process in which the resistance of the RTD element is correlated with the overall temperature.
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Leading Manufacturers

Garland, TX  |  800-889-5478

In business since 1972, Thermo Sensors Corporation is a leading thermocouple manufacturer of an array of many products and services.

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Thermo Sensors Corporation $$$

Quakertown, PA  |  800-784-3783

We manufacture a full line of Thermocouples to fit your application. Temperatures from cryogenic to 4000F, and sizes ranging from needle thin to several thousand pound multipoint temperature sensors.

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Thermocouple Technology, LLC $$$

Mississauga, ON  |  905-238-7060

Kelvin Technologies is a high-quality thermocouple manufacturer, representative, and distributor for all of your electrical heating, temperature controlling, and temperature sensing requirements. Our products are engineered and manufactured in-house to address specific requirements, such as higher temperatures and more compact profiles. With over 100 years of combined experience, all of us at Kelvin Technologies take pride in the quality of product and level of service we provide our customers.

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Kelvin Technologies, Inc. $$$

St. Francis, MN  |  800-272-5709

Temperature Specialists, Incorporated is a manufacturer of quality thermocouples. Temperature Specialists provide solutions for your sensing needs by building to meet your specifications. Feel free to visit their comprehensive and helpful website for full descriptions of their state-of-the-art line of quality products and services or call their experts with any questions.

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Temperature Specialists, Inc. $$$

Windsor, ON  |  800-265-9542

Acrolab has a diverse and comprehensive database consisting of thousands of application solutions that have aided our customers in resolving thermal management processing challenges, increasing their production rates and the bottom line. We work with your team to supply thermal management expertise, along with all the services and components to provide a complete application solution.

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Acrolab Ltd. $$$

Hudson, MA  |  800-343-4492

Since 1971, Thermalogic has been a leading manufacturer of electronic temperature and humidity control and sensors. Here at Thermalogic we work with our clients in a partnership to build a lasting business relationship. All of our products have quick turnaround times, including custom designs, and are thoroughly tested prior to being sent out. At Thermalogic we pride ourselves on our high quality, industrial grade, reliable products. Contact us today to get started!

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Thermalogic® Corporation $$$

Danvers, MA  |  978-777-0070

Backer Hotwatt manufactures a complete line of electric heating elements for a wide range of uses. We offer a broad product line of cartridge heating elements, tubular heating elements and immersion heating elements.

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Backer Hotwatt, Inc. $$$

Columbus, IN  |  812-372-0281

We have over 81 years of successful manufacturing experience and we offer a wide range of solutions. Our thermostats are utilized in industries including HVAC, process heating, food service, laboratory tank heating, industrial system control, and more. We have made it our mission to remain on the forefront of our industry and we work closely with our customers to ensure maximum satisfaction.

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Ulanet™ $$$
placeholder image Thermo Sensors Corporation Thermocouple Technology, LLC Kelvin Technologies, Inc. Temperature Specialists, Inc. Acrolab Ltd. Thermalogic® Corporation Backer Hotwatt, Inc. Ulanet™

RTD sensors can come in a variety of designs and forms all of which offer certain advantages such as greater stability, accuracy, and repeatability according to the application in which they are placed. Many of these different RTD sensor designs offer far more advantages than a thermocouple would offer in the same application. For a RTD sensor to function properly though, the wire that is wrapped around the ceramic or glass core must be kept completely contaminant-free. This wire can be made up of a number of different materials all of which have their own set of benefits, so choosing a wire material should be based on your requirements and application setting.

Platinum wires, for example, exhibit a very linear relationship between resistance and temperature, are resistant to vibrations, and have minimal differential expansion. Because of these benefits platinum wire may be the best choice for your application, but it is also costly. So if your application does not need all of the benefits platinum offers, a simple copper or iron wire may be better suited for your application.

Knowing your application and what you need from your RTD sensor is perhaps the most important step in the process. When looking at RTD sensors it is also important to note that there are two main groups in which all RTD sensors are categorized, immersion sensors and surface sensors. Immersion sensors are installed in your application in a way that ensures proper contact with the process medium, keeping external influences to a minimum.

Immersion sensors are often used to measure fluid or gas temperatures. Surface sensors, on the other hand, are generally utilized when it is not possible to totally immerse the sensor in the material or object of interest. These sensors require additional insulation to ensure accuracy, but they get the job done when an immersion sensor cannot. So whatever your needs may be, it is important to find a trusted RTD sensor manufacturer to get the job done right.

RTD Sensors Informational Video


Thermocouples Power Pages

RTD Sensors

RTD Sensors

An RTD, resistance temperature detector, is a passive temperature sensing device that operates on the principle that the resistance of a metal changes as the temperature changes. The electrical current that passes through the element...



A thermistor, a shortened version of the term thermal resistor, is a passive component whose resistance changes as the temperature in a system changes. Thus they serve as an inexpensive, accurate, and dynamic method for measuring temperature...



A thermocouple is a transducer that converts thermal energy into electrical energy and is constructed by joining wires made from dissimilar metals to form a junction. Voltage is produced when the temperature at the junction changes...

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