Resistance Temperature Detectors (RTD's)
About
RTD's
The inset assembly consists of PT-100 DIN element with silver connection leads, insulated by ceramic multi bore insulating tube surrounded by brass or stainless-steel sheath (8 mm dia) attached to a spring-loaded arrangement at the other end so as to protect the resistance element against vibrations and shocks normally encountered industrial use.
RTD’s are available with Simplex or Duplex resistance elements and in 2 or 3 wire circuits. RTD’s assay normally consists of an inset, outer protecting sheath with mounting connections & cast alterminal head.
Resistance vs. Temperature Relationship
RTD (Resistance Temperature Detector) sensors work on the principle that a material’s electrical resistance changes with temperature. This relationship is stable and predictable in materials like platinum, making it ideal for accurate and repeatable measurements.
Platinum RTDs, such as the widely used Pt100, are known for their linear response and durability across a broad temperature range. Copper and nickel are also used but are limited by oxidation and non-linearity at higher temperatures. RTDs are trusted in industries where precision and reliability are critical.
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