Question
Download Solution PDFThermocouple made up of:
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFThermocouple:
- A thermocouple is a sensor used to measure temperature.
- Generally, temperature up to 1400° is measured through this device.
- The thermocouple is generally made up of Nickel and Chromium for the use of temperature measurement inside the engine.
- It consists of two wire legs made from different metals.
- The wire's legs are welded together at one end, creating a junction.
- This junction is where the temperature is measured.
- When the junction experiences a change in temperature, a voltage is created.
- The voltage can then be interpreted using thermocouple reference tables to calculate the temperature.
- It works on the principle of the Seebeck effect which states that the temperature difference between two dissimilar electric conductors produces a voltage difference between them.
- This potential difference is used to measure temperatures.
- Type K (Nickel – alumel or Nickel-Chromium)
- Type E (Chromel – constantan)
- Type J (Iron – constantan)
- Type B (Platinum – rhodium)
Last updated on Jul 11, 2025
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