Temperature Sensors

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 Temperature Sensors

Temperature sensors are devices that measure the temperature of an object or environment and convert it into an electrical signal for monitoring or control.

Types of Temperature Sensors:

  1. Thermocouple – Measures temperature using the voltage generated between two different metals. Suitable for high-temperature applications.

  2. RTD (Resistance Temperature Detector) – Uses the change in resistance of a metal (usually platinum) with temperature. Highly accurate and stable.

  3. Thermistor – A semiconductor device whose resistance changes significantly with temperature. Commonly used in electronic devices.

  4. Semiconductor Temperature Sensor – Produces an output voltage or current proportional to temperature. Widely used in digital systems and microcontrollers.





Applications:

  • Air conditioners and refrigerators

  • Medical thermometers

  • Industrial process control

  • Automobiles

  • Weather monitoring systems

  • Home appliances and electronic devices

Advantages:

  • Accurate temperature measurement

  • Fast response

  • Easy integration with electronic circuits

  • Reliable and durable

Disadvantages:

  • Some types require calibration.

  • Accuracy may decrease at extreme temperatures depending on the sensor type.

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