Radiation Pyrometry — Lesson 4

This lesson covers the concept of Radiation Pyrometry, a method used to measure temperature through the radiation emitted by an object. It discusses the advantages of this technique, such as the ability to measure temperature from a distance without disturbing the object. The lesson also explains the assumptions made about the properties of the surface when measuring temperature and the potential errors that can occur. It introduces various instruments used in Radiation Pyrometry, including the total radiation pyrometer, spectral radiometer, and color temperature radiometer. The lesson also discusses the application of these instruments in different fields, such as metallurgy and satellite remote sensing.

Video Highlights

01:56 - Explanation of the total radiation pyrometer, which measures the radiation from all wavelengths from a given object. This is discussed from
05:01 - Discussion on the error in measurement when using the total radiation pyrometer, and how this error can be estimated. This is covered from
21:54 - Explanation of the spectral radiometer, which measures the radiation at a specific wavelength. This is discussed from
41:18 - Discussion on the concept of color temperature, and how it can be used to measure temperature with high accuracy. This is explained from
50:08 - Overview of different methods of radiation measurement, including calorimetric, photoelectric, photographic, and visual methods. This is covered from

Key Takeaways

- Radiation Pyrometry allows for temperature measurement from a distance without physical contact with the object.
- Assumptions about the properties of the surface can lead to potential errors in temperature measurement.
- Various instruments like total radiation pyrometer, spectral radiometer, and color temperature radiometer are used in Radiation Pyrometry.
- These instruments find applications in various fields like metallurgy and satellite remote sensing.
- The choice of instrument and method depends on the required accuracy and the specific conditions of the measurement.