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https://www.lisungroup.com/news/%new%/what-is-the-working-principle-of-the-rf-current-probe.html

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Introduction Infrared thermometers, including ear and forehead thermometers, are widely used in medical and industrial applications for non-contact temperature measurements. These devices require periodic calibration to ensure their accuracy and reliability. The Blackbody Furnaces and Infrared Temperature Calibrators, such as the LISUN BBF-1 Black Body Furnace | Tachometer Calibrator, provide precise calibration for these instruments, as well as for infrared body surface screening devices. This article explores the principles, applications, and benefits of blackbody furnaces and infrared temperature calibrators in the calibration process. Working Principle of Blackbody Furnaces and Infrared Temperature Calibrators A blackbody furnace simulates an ideal blackbody, which absorbs all incident radiation without reflection. Its emissivity is close to 1, making it an excellent standard for temperature calibration. The furnace emits radiation corresponding to its temperature, which can be acc...
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LISUN offer integarting sphere to measure reflectance

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Why is lm-79 the standard for street light measurements

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  LM-79 Intensity measurements are luminous intensity (measured in candela) taken from various angles all around an LED light source. It can combine this group of candela values to calculate zonal or total lumens, which may be used to make illuminance predictions within an application. The LM-79 standard is used mainly for measuring light by how it is perceived by the human eye (photometry or photometric measurement). The standard outlines the testing apparatus, procedures, and circumstances it must follow to make precise and repeatable measurements of the amount of light produced by LED goods and the amount of electrical power such products use. Generally, it may break down the testing techniques into two categories: angularly scanned and integrated (also known as goniometer measures) and measurements that use integrating spheres. This standard's very first iteration had the number. LM-79-08, and it was released to the public in the year 2008. The updated version of the sta...
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