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CMCs General Physics (3)
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Properties of detectors and sources (3)
Responsivity, spectral, radiance (3)
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United Kingdom, NPL (National Physical Laboratory)
Complete CMCs in Photometry and Radiometry for United Kingdom (.PDF file)
Responsivity, spectral, radiance. Spectroradiometer. Measurand unit, A/(W-1 m-2 sr-1 nm-1), V/(W-1 m-2 sr-1 nm-1), reading/(W-1 m-2 sr-1 nm-1)
Relative expanded uncertainty (k = 2, level of confidence 95 %) in %: 9.5 to 2, varies with wavelength
Tungsten or deuterium reference sources
Wavelength range: 200 nm to 400 nm
Bandwidth: > 0.1 nm
Power level: < 0.3 (W/m2/sr)/nm
Other types of source can also be used
 
Responsivity, spectral, radiance. Spectroradiometer. Measurand unit, A/(W-1 m-2 sr-1 nm-1), V/(W-1 m-2 sr-1 nm-1), reading/(W-1 m-2 sr-1 nm-1)
Relative expanded uncertainty (k = 2, level of confidence 95 %) in %: 2
Tungsten reference sources
Wavelength range: 400 nm to 700 nm
Bandwidth: > 0.1 nm
Power level: < 0.3 (W/m2/sr)/nm
Other types of source can also be used
 
Responsivity, spectral, radiance. Spectroradiometer. Measurand unit, A/(W-1 m-2 sr-1 nm-1), V/(W-1 m-2 sr-1 nm-1), reading/(W-1 m-2 sr-1 nm-1)
Relative expanded uncertainty (k = 2, level of confidence 95 %) in %: 2 to 18, varies with wavelength
Tungsten reference sources
Wavelength range: 700 nm to 2500 nm
Bandwidth: > 0.1 nm
Power level: < 0.3 (W/m2/sr)/nm
Other types of source can also be used