Resistance Temperature Detectors (RTDs) & Resistance Thermometers

Resistance temperature detectors (RTDs), also known as resistance thermometers, accurately sense process temperatures with an excellent degree of repeatability and interchangeability of elements. The RTD is composed of certain metallic elements whose change in resistance is a function of temperature. In operation, a small excitation current is passed across the element, and the voltage, which is proportional to resistance, is then measured and converted to units of temperature calibration. The RTD measurement element is manufactured by winding a wire (wire wound elements) or plating a film (thin film elements) on a ceramic or glass core and sealing the element within a ceramic or glass capsule. Since most resistance temperature detectors and resistance thermometers have a low initial resistance, often 100 ohms, and have a small change in resistance per unit of temperature range, the resistance of the lead wire is often compensated for with a three or four wire bridge configuration built into the measuring devices. By selecting the proper elements and protective sheathing, RTDs can operate in a temperature range of (-200 to 600) °C [-328 to 1112] °F. Pyromation manufactures resistance temperature detectors and resistance thermometers for many industry applications. From single- or dual-element RTDs, PT100s-PT1000s, to Sanitary CIP configurations, we have the right RTD type for your job. If what you need is not available from our catalog, our product engineers will design an RTD measurement device for your specific application, including temperature sensor assemblies that require connection heads, thermowells and/or transmitters.

Bearing Sensors | Food, Dairy, and Pharmaceutical | Sensors with Connection Heads | Specific Application RTDs| Plastic | General Purpose | Special Purpose | Explosion Proof

RTD Types

Bearing Sensors

Miniature Bearing Sensors

Food, Dairy, and Pharmaceutical

Water-tight CIP RTD Assemblies w/Options Series 450 Intregral Transmitters

CIP Sanitary-Connected RTD's

RTDs w/CIP Sanitary-Connected Wells 

Miniature Sanitary CIP RTD Sensors

Thermometer Replacement RTDs

Weld-In RTD Assemblies

Sensors with Connection Heads

Fixed Sheath RTD Assemblies w/Connection Heads

Spring-Loaded RTD/Thermowell Assemblies w/Connection Heads

Spring-Loaded Replacement RTD Elements

Fixed Sheat RTD Assemblies w/Miniature Connection Heads

Specific Application RTDs

Non-Intrusive Tank Sensors

Plastic

General Purpose Plastic Industry RTDs

Spring or Armor-Adjustable Immersion RTDs

Melt Bolt RTDs

Threaded Nozzel RTDs

Ring RTDs

Flexible RTD Extensions

General Purpose

Single and Duplex Element RTDs

Single and Duplex Element RTDs

Water-Tight RTD Assemblies w/Option Series 450 Temperature Transmitters

M12 Molded and Field Wireable Cables

Special Purpose

FEP-Coated RTD Assemblies

Heated Tracing Temperature Sensors

RTD Averaging Sensor

Thermostat Temperature Sensors

Variable Length RTD Sensor

Explosion Proof

Hazardous Location Explosion-Proof Approved Fixed-Element RTD Assemblies

Hazardous Location Explosion-Proof Approved RTD Assemblies w/Thermowells

Hazardous Location Explosion-Proof Approved, Spring-Loaded RTD Assemblies