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WIKA - Pt100 and Pt1000 Sensors: Important Facts and Differences October 2020 MARIETTA, GA ~ Many industries use RTDs for measuring temperature, and the sensor in the majority of those devices are either the Pt100 or Pt1000. These two temperature sensors have similar characteristics, but their difference in nominal resistance may determine which one you choose for your application. Resistance temperature detectors (RTDs), also called resistance thermometers, are popular temperature measurement devices due to their reliability, accuracy, versatility, repeatability, and ease of installation. The basic principle of an RTD is that its wire sensor – made of a metal with a known electrical resistance – changes its resistance value as the temperature rises or falls. Although resistance thermometers have certain limitations, including a maximum measuring temperature of about 1,100°F (600°C), overall, they are the i...Read More