Universal temperature sensor Pt100 -50…250°C


Pt100 universal temperature sensors are highly reliable and widely used in various industries, including industrial automation, HVAC, laboratory equipment, and scientific research. They provide accurate and stable temperature measurements within a broad temperature range, making them suitable for diverse applications.


  1. Sensor Type: The Pt100 sensor is a resistance temperature detector (RTD) that utilizes a platinum element as the sensing element. The “Pt” in Pt100 stands for platinum, and “100” represents its resistance value at 0°C, which is 100 ohms.
  2. Temperature Range: The Pt100 universal temperature sensor has a wide temperature range from -50°C to 250°C. It is capable of accurately measuring temperatures within this range.
  3. Sensing Element: The sensing element of the Pt100 sensor is made of platinum wire or a thin-film deposited on a ceramic substrate. Platinum is chosen for its excellent stability and linear relationship between resistance and temperature.
  4. Resistance vs. Temperature Relationship: The Pt100 sensor follows a well-defined resistance vs. temperature relationship. It is designed to have a resistance of 100 ohms at 0°C and increases linearly by approximately 0.385 ohms per degree Celsius. This relationship allows for precise temperature measurements.
  5. Accuracy: The accuracy of the Pt100 sensor depends on various factors, including the sensor’s quality, calibration, and the measurement circuitry used. Generally, Pt100 sensors offer high accuracy, with typical tolerances ranging from ±0.1°C to ±0.3°C.
  6. Linearity: The resistance vs. temperature relationship of the Pt100 sensor is highly linear within its specified temperature range. This linearity ensures consistent and predictable readings.
  7. Response Time: The response time of the Pt100 sensor refers to how quickly it reacts to changes in temperature. It is typically in the range of a few milliseconds to a few seconds, depending on the specific design and construction of the sensor.
  8. Protection and Enclosure: Pt100 sensors are typically housed in protective enclosures made of stainless steel or other materials resistant to the environment in which they are used. These enclosures provide mechanical protection and help maintain the sensor’s accuracy and reliability.
  9. Mounting Options: Pt100 sensors come in various mounting options to suit different applications. Common options include threaded fittings, probe-style housings, surface-mount configurations, and more. The choice of mounting depends on the specific installation requirements.
  10. Wiring: Pt100 sensors can be connected using two, three, or four-wire configurations, as described in the previous response. The choice of wiring configuration depends on the desired accuracy and the capabilities of the measurement system being used.
  11. Compatibility: Pt100 sensors have a standardized resistance vs. temperature relationship, making them compatible with a wide range of temperature measurement devices and systems. They can be easily integrated into control systems, data acquisition systems, and temperature monitoring equipment.



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