Emissivity Theory
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11 ماه پیش
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More information:
More information: https://www.optotherm.com/emissivity-...
Script:
"This video provides an overview of emissivity theory.
Emissivity is the ability of a surface to emit or radiate energy in the infrared region of the electromagnetic spectrum. A blackbody is an ideal surface with emissivity equal to 1.00 (100%) and is called a perfect emitter. Real surfaces have emissivity values between 0 and 1.00. Surface emissivity is dependent on material makeup, surface characteristics, and measurement angle. For example, a surface at 50°C with emissivity of 0.72 emits 72% of the infrared energy that a blackbody would emit at the same temperature. The reduced emissivity of a real surface is due to its partial reflectance, transmittance, or a combination of both.
The apparent temperature of a surface is the temperature measured by a thermal imaging camera with no software emissivity compensation applied to the measurement. In other words, the software assumes that the surface is a black body with emissivity of 1.00. Only when surface emissivity is known can thermal imaging software compensate for emissivity and then calculate true temperature accurately.
True temperature is the actual temperature of an object and is a measure of the average heat or thermal energy of the particles in a substance. The Region emissivity setting can be used to apply a single emissivity value to the enclosed pixels. Region emissivity should be used when only on surfaces with uniform emissivity. Watch the "Regions: Settings, Information, and Measure Windows" video to use this: Regions: Settings, Information, and M...
Emissivity tables provide the ability to compensate for non-uniform emissivity over a surface pixel-by-pixel. Watch the "Emissivity Tables" video next to learn how to use Emissivity Tables: Emissivity Tables
Emissivity compensation in software assumes the target is opaque and transmittance is very low. Background Temperature is the temperature of a target's ambient background and must be set correctly in order for Thermalyze to accurately calculate true temperature."
Camera model: N/A
Thermalyze version: 7.7.4.0
Software modules used: N/A
Script:
"This video provides an overview of emissivity theory.
Emissivity is the ability of a surface to emit or radiate energy in the infrared region of the electromagnetic spectrum. A blackbody is an ideal surface with emissivity equal to 1.00 (100%) and is called a perfect emitter. Real surfaces have emissivity values between 0 and 1.00. Surface emissivity is dependent on material makeup, surface characteristics, and measurement angle. For example, a surface at 50°C with emissivity of 0.72 emits 72% of the infrared energy that a blackbody would emit at the same temperature. The reduced emissivity of a real surface is due to its partial reflectance, transmittance, or a combination of both.
The apparent temperature of a surface is the temperature measured by a thermal imaging camera with no software emissivity compensation applied to the measurement. In other words, the software assumes that the surface is a black body with emissivity of 1.00. Only when surface emissivity is known can thermal imaging software compensate for emissivity and then calculate true temperature accurately.
True temperature is the actual temperature of an object and is a measure of the average heat or thermal energy of the particles in a substance. The Region emissivity setting can be used to apply a single emissivity value to the enclosed pixels. Region emissivity should be used when only on surfaces with uniform emissivity. Watch the "Regions: Settings, Information, and Measure Windows" video to use this: Regions: Settings, Information, and M...
Emissivity tables provide the ability to compensate for non-uniform emissivity over a surface pixel-by-pixel. Watch the "Emissivity Tables" video next to learn how to use Emissivity Tables: Emissivity Tables
Emissivity compensation in software assumes the target is opaque and transmittance is very low. Background Temperature is the temperature of a target's ambient background and must be set correctly in order for Thermalyze to accurately calculate true temperature."
Camera model: N/A
Thermalyze version: 7.7.4.0
Software modules used: N/A
11 ماه پیش
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