When using an infrared camera for measurement, it is necessary to correct the emission, to find out the emissivity value of the surface of the equipment component under test, to correct the emissivity, so as to obtain reliable temperature measurement results, and to improve the reliability of detection.
For infrared detection of fault-prone equipment components, in order to make the results comparable, the emissivity value can be increased and stabilized by applying the appropriate paint to obtain the true temperature of the surface of the equipment under test.
Any infrared measurement instrument obtains information about the temperature of an electrical device by measuring the infrared radiant power on the surface of the device. And in the case of infrared diagnostic equipment to receive the same infrared radiation power from the target, due to the target's surface emissivity is different, will get different detection results.
Extended information
1, the outdoor electrical equipment on-site infrared detection, as far as possible, choose to carry out in cloudy days or in the evening at sunset around the time of no light. This can prevent direct incidence, reflection and scattering of solar radiation, the indoor equipment can be used to turn off the lights, as well as to avoid other radiation effects.
2, for highly reflective equipment surfaces, should take appropriate measures to reduce the impact of solar radiation and radiation from surrounding hot objects. Or change the detection angle, to find the best angle to avoid the reflection of the detection.