Temperature Sensor Manufacturer

C-Temp International is a RTD manufacturer designing and building resistance temperature detectors (RTDs) and RTD assemblies since 1981. It is our goal to earn your business by delivering superior products and to keep you as a customer with our unparalleled customer service.

The majority of our RTD business is RTD assemblies.

Our team can respond to your drawing, SCD or specification.

We have engineering that can design custom RTDs for specialized requirements.

In addition to RTD assemblies, C-Temp International offers RTD components including industry standard sensor elements, wires, sheaths, all types of connectors, housings, and mounting options.

Responsive, precision and quality in everything we build. Contact us for a free quote.

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Headquartered in Gardena, California, C-Temp International was formed in 1981 as a RTD manufacturer to serve the HVAC, industrial, food service, process control, and military equipment OEMs in need of accurate, reliable and affordable customized RTD (“Resistance Temperature Detector”) solutions.  Over the years, we have been improving our RTD manufacturing processes to provide high quality, world class products. Today, C-Temp International is dedicated to evolving to advance our manufacturing standard and our resistive temperature detectors production capabilities for the benefit of our end users and major OEMs. We’ve delivered thousands of RTD and RTD assemblies as industry standard configurations and custom designed units.

Other areas of our RTD manufacturing expertise are RTD accessory products such as the temperature elements, wire, connectors, and fittings. Many of our resistance temperature detector measurement products are engineered into equipment at the world's leading instrumentation, process control and semiconductor companies. C-Temp International’s RTD manufacturer’s proficiency includes advanced ultra-high temperature materials utilization and metallurgical processes. Our capability extends to a full range of state-of-the-art products for flexible interconnect needs. We deliver customized elements, probes, wire assemblies with specialty terminations to suit any particular industrial needs one may have. Not only do we manufacturer resistance temperature detectors, but we offer a full range of custom design services to provide you with the benefit of our knowledge and experience.


C-Temp International’s forte is RTD Assemblies. We have a great deal of experience and are very proficient at manufacturing (i.e., build to print or build to spec) for those who have the ability to design their own resistance temperature detectors in-house and are seeking a veteran RTD manufacturer to build it. By utilizing our production capabilities, you benefit by using our skilled assembly technicians and established suppliers to build your resistance temperature detectors. All of our years of manufacturing experience and quality control go into the assembly of your product. Our production team will adhere to high quality manufacturing standards and comply to our strict assembly guidelines. After your custom RTD is assembled, we’ll provide final inspection and test per our quality criteria or yours.  Our team will do it right, on-time and on budget.

All of our custom RTD and RTD assemblies are tested for adequate insulation resistance. All cable is certified and checked for ANSI limits of error conformance by standard lot sampling in our quality control laboratory, which is certified traceable to the NIST. Finished assembly certified traceable calibration is available at time of order.


RTDs (“Resistance Temperature Detectors”) have several distinct features that make them the preferred choice for temperature sensors. First, they are very suitable for applications requiring more precise temperature measurements. Their precision comes from the linearity of their signal which provides the benefit of better accuracy and more detailed readings. Second, RTDs offer very stable measurements and over long periods of time. Third, RTDs have a very wide temperature range capability. Certain RTD elements operate from -200°F to 1200°F which are useful in extreme temperature environments. Fourth, RTDs are relatively immune to electrical noise and therefore well suited for temperature measurement in industrial environments, especially around motors, generators, and high voltage equipment.