Gossen MetraWatt MAVOSPEC BASE Operating Instructions Manual page 29

12 Technical Data
Sensor Technology, Measuring Uncertainty
Sensor
Diffusor light-entry surface
Distance, diffuser to surface to be measured
Error limit, cosine correction
Spectral range
Full width at half maximum (FWHM)
Physical resolution
Digital resolution
Wavelength reproducibility
Integration time
Signal-to-noise ratio
Spurious light
Dark stream compensation
Measurement uncertainty, illuminance
Measurement uncertainty, chromaticity
Reproducibility, chromaticity
Measurement uncertainty, CCT
Measurement uncertainty, CRI
Measurement uncertainty, flicker
Photometry
Measuring functions
Units of Measure
CMOS image sensor, 256 pixels
7 mm diameter
25 mm
< 3% (comparable with the f2 failure of a class B device according DIN 5032-7)
380 ... 780 nm
< 15 nm (typically 12 nm)
~ 1.72 nm
16 bit
+ 0.5 nm
Automatic, manual, 10 ... 3000 ms in 10 ms steps
1000:1
-25 dB
Automatic with integrated temperature sensor
Standard light type A, 2856 K
@ 1000 lx
Illuminance
Color temperature (K)
Duv – color temperature difference relative to
the Planckian locus
Color rendering index Ra, R1 to R15
ʎpeak – peak wavelength
ʎdominant – dominant wavelength
Purity – color purity
Chromaticity coordinates
Flicker index
Flicker as percentage (%)
Flicker frequency (Hz)
lx / °C - fc / °F, selectable
Gossen Foto- und Lichtmesstechnik GmbH
+ 3 %
+ 0.0005
+ 2%
+ 1.5%
+ 1.5%
10 ... 100,000 lx
CIE 13.3
CIE 15
CIE 15
CIE 1931 [x,y], CIE 1960 [u,v], CIE 1976 [u',v']
0.00 ... 1.00
0% ... 100%
2 ... 1000 Hz
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