Functional Features:
• Measurement of strobe / fluctuation depth.
• Measurement of visual illumination.
• Diagonal angle can be set.
• Spectrum measurement.
Strobe (fluctuation depth)
Strobe or flicker has gradually been valued and understood by the industry in recent years, benefiting from the development of a variety of professional instruments that allow a specific analysis of the visual or health effects of flicker in terms of data. Strobe hazards despite the controversy, there are different standards, different periods, different institutions put forward different evaluation methods, at present, we are more concerned about the strobe fluctuation depth strobe frequency (Par 1789), SVM and Pst (CIE), fluctuation depth as shown in the figure below right is a 100Hz strobe waveform graph: the peak value is Max, the valley value is Min, the
Depth of fluctuation = (Max-Min)/(Max+min) *100%
The fluctuation depth is the main indicator measured by this machine. The figure below is very typical of the strobe fluctuation waveform, and the last column evaluates the severity of the strobe: this case is more critical (8.2).
Other parameters description:
• Strobe index: the ratio of the sum of the area of the fluctuation diagram beyond the average to the total area.
• Strobe frequency: the frequency of the strobe, when DC or close to DC, the frequency is 0Hz.
• Scan: the actual scanning frequency, scanning frequency range:5-200KHz.
• Channel: signal sampling channel, C0-C7, the higher the illumination channel is smaller, the smaller the sampling time constant, the channel is small suitable for high-frequency measurement, the channel is large high-frequency measurement error will become larger.
Spectrum
Press the right button to start measuring the spectral value of the target immediately, the red light on the left side will start to go off and the device will start to match the test parameters and take samples.
To view detailed results, press the middle key, first display the lower right graph, color rendering index Ra, R1-R15. press the middle key again to switch to spectral energy statistics and illuminance, irradiance, EML EDI values; PPFD is the optical quantum density graph in which this data is 18.571 umol/m^2/S. Blue light irradiance is a weighting function of the blue light hazard spectrum according to IEC 62471:2006 The result of the convolution with the spectral energy distribution. To facilitate the application of the spectrum, the percentage energy distribution is given for the wavelength interval between UVA and 100 nm.
Right click to enter the spectral measurement mode, then press the right button to execute the spectral measurement, view the detailed measurement results by the middle button Left click to exit the spectral mode and return to the main page.
Technical parameters of spectral illuminance meter
1. Based on standards or literature
• <CIE S 02 6/E:2018 CIE System for Metrology of Optical Radiation for ipRGC-Influenced Responses to Light>
• [The WELL Building Standard Q2 2020 version]
• Group standards: T/SIEATA000001-2020
• <Ranking evaluation for classroom lighting quality in primary and middle schools >
2. Measurement method: spectroscopic method
3. Measurement parameters:
Luminous visual illuminance:
o Measurement range 0.5 - 200 000 lx
o Repeatability: ±0.5% FS
o Measurement accuracy: ±5.0% FS
o Reading resolution: 0.1 lx
Inclination measurements:
Measurement range 0-180 degrees
Measurement accuracy: ±1.5 degrees
Take the value of the allowable angle error: ± 5 degrees
Color measurements:
Color coordinate x,y repeatability (A light source): ±0.0005
Measurement accuracy: ± 0.002
Color temperature measurement range 1600-100 000 K
Color rendering index ±1
Resolution ±0.1
4. Electrical parameters:
Lithium battery specification 18650, rated voltage 3.7V,
Capacity 2200mAh, certified UN38.3.
Charging requirement: 5 ±0.4V, 1.0-3.0A
mini USB-US
Models and Functions:
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