Sensors RTDs                                          

Resistance Temperature Detectors (RTDs)

Resistance Temperature Detectors are sensors that measure temperature by correlating the resistance of the RTD element with temperature. Most RTD elements consist of a length of fine coiled wire wrapped around a ceramic or glass core. The element is typically relatively fragile, so it is generally installed inside a sheath to protect it. The RTD element is constructed from a pure material, the resistance of which, at various temperatures, has been documented by various international standards institutes. The material has a predictable change in resistance as the temperature varies; it is this change that is used to determine temperature. RTDs are generally considered to be among the most accurate temperature sensors available.In addition to providing very good accuracy, they feature excellent stability and repeatability. RTDs also provide high immunity to electrical noise and are, therefore, well suited for applications in process and industrial automation environments, especially around motors, generators and other high voltage equipment.

 

Technical Resources

RTD Design and Specifications Resistance vs Temperature Tables: 392 Curve & 385 Curve How to Size a Sensor

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Product Information

Sensor Model Description 101, 102 & 103 General Purpose 110 Field Cuttable 120 Hand-Breakable 201 & 203 RTDs with Welded Fittings 301 & 304 Spring Loaded with Explosion Proof Housing 302 & 303 Spring Loaded without Transmitter for General Purpose Housing 305 Spring Loaded, 1/2" NPT Hex Nipple 312 Spring Loaded, 1/2" NPT Hex Nipple 451 Direct Immersion Sanitary 452 Spring Loaded Sanitary Temperature Sensor 461 Sanitary RTD with Removable Sensing Element 2543 Non-Intrusive Flow Through Sanitary Sensor 3142B Sanitary Flush Mount Tank Temperature Sensor 3226A Food Piercing Temperature Sensor 3304A Flexible Stick-on Surface Temperature Sensor 3312A Autoclave Temperature Sensor 3332A Embedded Temperature Sensors for Rotating Machinery and Turbines Bearing Temperature  Sensors for the Measurement of Bearing Temperatures Bayonet Fitting Design Spring Loaded Bayonet Fitting Temperature Sensors Flow Computer/Corrector RTDs  Temperature Sensors for Flow Computers and Gas Correctors

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