emissivity and Reflectance Correction (Model)
Thermocouple Use
There is also a method for matching emissivity.
- Thermocouple standard *-
* When using contact thermometers such as thermocouples and resistance thermometer
Vinyl tape used
Vinyl tape emissivity 0.95 * The degree and subject
Adjust it based on the temperature of the applied tape.
From the FLIR manual
| 1. Identifying the reflection source ① | | 2. Identifying the reflection source ② |
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3. Measurement of apparent temperature of reflected source A
(emissivity = 1, distance = 0) | | 3. Measurement of apparent temperature of reflected source B
(emissivity = 1, distance = 0) |
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| 4. Set the reflected apparent temperature as the reflected source temperature and attach vinyl tape near the measurement point. |
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- Heat the object to a temperature at least 20°C higher than the surrounding area (evenly throughout).
- Set the SP1 in line with the vinyl tape and set its emissivity to 0.97 * as the reference temperature.
- Place SP2 on the surface of a nearby object and adjust its emissivity to find the value where SP2 temperature = SP1 temperature, and when they match, that is the desired emissivity.
*We used emissivity of 0.95 and 0.97, and object temperatures of 30 and 20°C, but please do not pay attention to these differences. Since they are all "degrees," you can also use values in the middle such as 0.96 and 25°C.
About emissivity measurement method
emissivity measurement method (principle explanation)
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emissivity measurement method 1-① Vinyl tape standard/spot 1 (practical version/for those who already understand the principle)
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| emissivity measurement method 1-② Vinyl tape standard and two spots (practical version, for those who already understand the principle)
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emissivity measurement method 1-③A Vinyl tape standard・FLIR Tools (Practical edition・For those who already understand the principle)
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| emissivity measurement method 1-③B Vinyl tape standard・FLIR Tools (detailed version)
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emissivity measurement method 2-① Thermocouple standard (practical edition, for those who already understand the principle)
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| emissivity measurement method 2-② Thermocouple standard・FLIR Tools (Practical edition・For those who already understand the principle)
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| Kirchhoff's Laws
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