News Application Cases One device integrates flicker, spectrum, color temperature, illuminance, and human-centric lighting measurement — Application of the SFIM-500 spectral flickering irradiance meter in architectural lighting 
Release time：2026-09-15
The on-site lighting inspection environment is complex. Traditional inspections often require multiple devices, such as illuminance meters, spectrometers, flicker meters, and circadian lighting testers, to work together, resulting in cumbersome procedures and low efficiency. Although there are many portable instruments on the market, professional handheld devices that can simultaneously cover flicker analysis, photometric and colorimetric measurement, and human-centric lighting evaluation are very few.
The EVERFINE SFIM-500 spectral flickering irradiance meter integrates measurement functions such as flicker, spectrum, illuminance, colorimetry, color quality, and human-centric lighting into one device. A single unit can handle comprehensive inspections of on-site lighting environments, including desk lamps, commercial luminaires, classroom lighting, architectural lighting, and landscape lighting. It supports the internationally advanced human-centric lighting evaluation system, making it an essential tool for project acceptance and random lighting inspections.
The SFIM-500 delivers outstanding core performance. Its 50kHz high-speed sampling capability can quickly capture dynamic changes in light. Combined with multiple patented technologies, it uses the spectral method to measure light and color parameters, effectively broadening the measurement dynamic range and improving measurement accuracy. The measurement range covers 0.01–200 klx, allowing a single instrument to measure both low-illuminance dark environments and high-intensity bright environments. The wavelength range is 380 nm–780 nm, with wavelength accuracy of ±0.5 nm, illuminance accuracy of ±3%, and photometric channel linearity of 0.3%. All measurement data are traceable to the National Institute of Metrology (NIM).
The SFIM-500 features powerful software that enables one-click measurement of multiple professional parameters, including flicker percentage, flicker index, flicker frequency, short-term flicker indicator Pst, stroboscopic effect visibility SVM, spectral distribution curve, illuminance, color coordinates, color temperature, color rendering index, color fidelity Rf, color saturation Rg, color quality scale CQS, as well as human-centric lighting metrics M-EDI, M-DER, and EML.
When dealing with high-altitude luminaires, enclosed dim areas, or high-radiation hazardous light sources, conventional handheld measurements present operational blind spots and safety risks. The SFIM-500 features a unique detachable probe design that supports Bluetooth and Wi-Fi wireless connectivity, allowing it to be used either as an integrated unit or in a separated configuration. The probe can sample at 360° and comes with a built-in orientation indicator (real-time reading from 0 to 90°), eliminating the need for close-range operation, making measurements safer and more convenient.
The SFIM-500 features a 5.48-inch OLED touchscreen for easy operation, with built-in 6GB large-capacity storage and over 20 hours of battery life, easily handling a full day of outdoor inspections. The device supports data export, report generation, and file sharing, fully covering workflow scenarios such as product R&D, production line quality inspection, and project acceptance.
Leveraging its powerful performance and professional design, the SFIM-500 is widely used in various scenarios, such as new product R&D, production line quality inspection, and sales support for luminaire manufacturers; renovation and acceptance of classroom lighting and architectural lighting projects; comprehensive light environment testing in public spaces such as shopping malls, office buildings, hotels, hospitals, and nursing homes; as well as inspection in professional venues with extremely high requirements for color quality, such as museums and art galleries. It completes comprehensive evaluations of photometric and colorimetric performance, flicker, non-visual biological effects, and color quality in a single step.
The EVERFINE SFIM-500 spectral flickering irradiance meter, a flagship model launched by EVERFINE—a leading drafter of multiple national standards for light measurement—truly achieves the integrated operation of "one device replaces an illuminance meter, spectrometer, flicker meter, and circadian lighting tester," combining authority, practicality, and professionalism. For industry professionals engaged in lighting inspection, luminaire quality control and sales, and lighting engineering acceptance, if you need a reliable, portable, and precise on-site lighting inspection tool, please look for EVERFINE.
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