UPRtek MK350D User Manual And Warranty page 14

Sensor CMOS linear image sensor
Spectral Bandwidth Approximately 12 nm（half bandwidth）
Receptor Size Ø 6.6 ± 0.1 mm
Cosine Correction refer Figure 1.
Measurement Range 70 ~ 70000 Lux
Wavelength Range 380 ~ 780 nm
Integration Time Range 6 ~ 1000 ms
Operation Mode Standalone Mode / Bluetooth Mode / USB Mode
Capture Function One time / Continuous
( Standalone mode only support One time )
Integration Mode Auto / Manual
( Standalone mode only support Auto )
1. CCT, CRI, LUX, λP
Measuring in 2. Spectrum Graphics
Standalone Mode 3. CIE 1931 / CIE 1976 U.C.S Chromaticity Value
4. R9, LUX, FC, Pflicker
1. CCT
2. CRI ( R1~R15 )
3. LUX
Measuring Capabilities 4. λP
5. C.I.E. Chromaticity Coordinates
(1) CIE 1931 x,y Coordinates
(2) CIE 1976 U.C.S u',v' Coordinates
6. Percentage Flicker
Digital Resolution 16 bits
Dark Calibration Yes
Stray Light -25 dB max.
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*1
Wavelength Data Increment 1 nm
Wavelength Reproducibility ± 1 nm
( Input source must be a stable light source. )
Illuminance Accuracy
Color Accuracy
Illuminant A @ 2856K
Color Repeatability
at 20000 Lux
CCT Accuracy
CRI Accuracy @ Ra
Percentage Flicker 1 ~ 100 %
Flicker Frequency 10 ~ 165 Hz
Flicker Accuracy ± 5%
Display 0.96" 128x64 mono OLED Panel
Bluetooth 3.0 / 4.0 compatible with iOS and Android
Max. Files ≒ 2000 Files @ 2GB SD Card
Battery Operation Time ≦ 3 hours / Fully Charged
Battery 700 mAh / Rechargeable Li-ion Battery
Data Output Interface Micro SD Card / Mini USB Port ( USB 2.0 )
Compatible MicroSoft Office Excel
Data Format
Dimensions 33 x 33 x 90 mm ( H x W x D )
Weight ( with Battery ) 70 g ± 5 g
Operating Temperature 0 ~ 35 ℃
Storage Temperature -10 ~ 40 ℃
Language Selection English / Traditional Chinese / Simplified Chinese
/ Japanese / French / Russian
*1 : Use the input of 550nm single-frequency and measurement the range of
optical ± 40nm.
*2 : Input source must be a stable light source.
The company reserves the right to change product specifications, if it has any changes will
not give any notice.
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*2
± 5%
± 0.0025 in CIE 1931 x,y
± 0.0005 in CIE 1931 x,y
± 2%
± 1.5%