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Calibration and Measurement Capabilities
Photometry and Radiometry
In the CMCs uncertainty statements, the notation Q[a, b] stands for the root-sum-square of the terms between brackets: Q[a, b] = [a2 + b2]1/2
 
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Your selection : Photometry and Radiometry
 
Italy, INRIM (Istituto Nazionale di Ricerca Metrologica)
Complete CMCs in Photometry and Radiometry for Italy (.PDF file)
Colour, transmitted, x, y, Y. General material. x, y, 0  to 0.9 
Absolute expanded uncertainty (k = 2, level of confidence 95%): 0.001
Tristimulus colorimeter
Type of material: luminance source and colour filter
 
Colour, transmitted, x, y, Y. General material. Y, 0  to 100 
Absolute expanded uncertainty (k = 2, level of confidence 95%): 1
Tristimulus colorimeter
Type of material: luminance source and colour filter
 
Distribution temperature. Tungsten lamp, 2800 K to 3000 K
Absolute expanded uncertainty (k = 2, level of confidence 95%) in K: 25.0
Red-blue ratio
 
Illuminance. Tungsten lamp, 5 lx to 5000 lx
Relative expanded uncertainty (k = 2, level of confidence 95%) in %: 1
Reference photometers
Correlated colour temperature: 2800 K to 2900 K
 
Illuminance responsivity, tungsten source. Illuminance meter. Measurand unit,  A/lx
Relative expanded uncertainty (k = 2, level of confidence 95%) in %: 1
Reference lamps and photometer
Colour temperature: 2800 K to 2900 K
Illuminance: 5 lx to 5000 lx
 
Luminance. Tungsten-based source, 1 cd/m2 to 1000 cd/m2
Relative expanded uncertainty (k = 2, level of confidence 95%) in %: 1.2
Integrating sphere source
Correlated colour temperature: 2800 K to 2900 K


 
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