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Principles of Optical Pyrometers
Optical pyrometer is a temperature measuring instrument based on the principle of spectral radiation. The object will emit light at high temperature.
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The working characteristics of optical pyrometer
Optical pyrometers can be divided into optical pyrometers, total radiation pyrometers, photoelectric colorimetric pyrometers and infrared thermometers. They are all non-contact measuring instruments.
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Features of Optical Pyrometer
When measuring temperature with an optical pyrometer, the image seen by the human eye through the eyepiece is shown in the figure.
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Common categories of optical pyrometers
The working current of the high temperature bulb is changed by adjusting the resistance. When the brightness of the filament is consistent with the brightness of the object to be measured,
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Criteria for choosing a pyrometer
The application of the pyrometer is mainly determined by the measurement range. Whether it is the measurement voltage or the initial value of the measurement area, it should be consistent with the requirements of the measurement work.
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Disadvantages of Optical Thermometers
When measuring temperature with an optical pyrometer, the image seen by the human eye through the eyepiece is shown in the figure. There is a filament on the background of the object to be measured.
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Considerations for Optical Pyrometers
When measuring temperature with an optical pyrometer, the image seen by the human eye through the eyepiece is shown in the figure. There is a filament on the background of the object to be measured.
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The working principle and advantages and disadvantages of optical pyrometer and photoelectric colorimeter pyrometer
Optical pyrometers are currently widely used for temperature measurement of high-temperature melts and furnaces, and are very important high-temperature instruments in metallurgy,
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Matters needing attention when using optical pyrometers
The effect of non-black body. Since the measured object is a non-absolute black body, and the blackness coefficient ελ of the object is not constant, it is related to the wavelength λ, the surface condition of the object and the temperature.
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