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United Kingdom, NPL (National Physical Laboratory)
Complete CMCs in Photometry and Radiometry for United Kingdom (.PDF file)
Radiance, spectral. Tungsten lamp, 1E-04 W/(m2 sr nm) to 1 W/(m2 sr nm)
Relative expanded uncertainty (k = 2, level of confidence 95 %) in %: 0.8
Spectroradiometer
Wavelength range: 600 nm to 1599 nm
Bandwidth: < 20 nm
Other types of source can also be measured
Approved on 20 April 2017
 
Radiance, spectral. Tungsten lamp, 1E-04 W/(m2 sr nm) to 1 W/(m2 sr nm)
Relative expanded uncertainty (k = 2, level of confidence 95 %) in %: 0.8 to 2.0 (with wavelength)
Spectroradiometer
Wavelength range: 1600 nm to 2350 nm
Bandwidth: < 20 nm
Other types of source can also be measured
Approved on 20 April 2017
 
Radiance, spectral. Tungsten lamp, 5E-04 W/(m2 sr nm) to 1 W/(m2 sr nm)
Relative expanded uncertainty (k = 2, level of confidence 95 %) in %: 2.4
Spectroradiometer
Wavelength range: 2351 nm to 2500 nm
Bandwidth: < 20 nm
Other types of source can also be measured
Approved on 20 April 2017
 
Radiant intensity, spectral. Tungsten lamp, 3E-05 W/(nm sr) to 3E-02 W/(nm sr)
Relative expanded uncertainty (k = 2, level of confidence 95 %) in %: 1.9 to 1.5 (with wavelength)
Spectroradiometer
Wavelength: 250 nm to 300 nm
Bandwidth: < 20 nm
Other types of source can also be measured
Approved on 20 April 2017
 
Radiant intensity, spectral. Tungsten lamp, 3E-05 W/(nm sr) to 3E-02 W/(nm sr)
Relative expanded uncertainty (k = 2, level of confidence 95 %) in %: 1.5
Spectroradiometer
Wavelength: 300 nm to 400 nm
Bandwidth: < 20 nm
Other types of source can also be measured
Approved on 20 April 2017
 
Radiant intensity, spectral. Tungsten lamp, 3E-05 W/(nm sr) to 3E-02 W/(nm sr)
Relative expanded uncertainty (k = 2, level of confidence 95 %) in %: 1.5 to 0.9 (with wavelength)
Spectroradiometer
Wavelength: 400 nm to 500 nm
Bandwidth: < 20 nm
Other types of source can also be measured
Approved on 20 April 2017
 
Radiant intensity, spectral. Tungsten lamp, 3E-05 W/(nm sr) to 3E-02 W/(nm sr)
Relative expanded uncertainty (k = 2, level of confidence 95 %) in %: 0.9 to 0.8 (with wavelength)
Spectroradiometer
Wavelength: 500 nm to 800 nm
Bandwidth: < 20 nm
Other types of source can also be measured
Approved on 20 April 2017
 
Radiant intensity, spectral. Tungsten lamp, 5E-04 W/(nm sr) to 2.5E-01 W/(nm sr)
Relative expanded uncertainty (k = 2, level of confidence 95 %) in %: 0.5
Spectroradiometer
Wavelength: 801 nm to 1600 nm
Bandwidth: < 20 nm
Other types of source can also be measured
Approved on 20 April 2017
 
Radiant intensity, spectral. Tungsten lamp, 6E-03 W/(nm sr) to 2.7E-01 W/(nm sr)
Relative expanded uncertainty (k = 2, level of confidence 95 %) in %: 0.8 to 1.2 (with wavelength)
Spectroradiometer
Wavelength: 1601 nm to 2400 nm
Bandwidth: < 20 nm
Other types of source can also be measured
Approved on 20 April 2017
 
Radiant intensity, spectral. Tungsten lamp, 1.5E-03 W/(nm sr) to 2.9E-01 W/(nm sr)
Relative expanded uncertainty (k = 2, level of confidence 95 %) in %: 1.8
Spectroradiometer
Wavelength: 2401 nm to 2500 nm
Bandwidth: < 20 nm
Other types of source can also be measured
Approved on 20 April 2017
 
Responsivity. Fibre optic power meter. Measurand unit, A/W, V/W, reading/W, W, dB, dBm
Relative expanded uncertainty (k = 2, level of confidence 95 %) in %: 1.0
Comparison with reference detector
Wavelength: 850 nm
Bandwidth: < 1 nm
 
Responsivity. Fibre optic power meter. Measurand unit, A/W, V/W, reading/W, W, dB, dBm
Relative expanded uncertainty (k = 2, level of confidence 95 %) in %: 1.0
Comparison with reference detector
Wavelength: 1300 nm
Bandwidth: < 1 nm
 
Responsivity. Fibre optic power meter. Measurand unit, A/W, V/W, reading/W, W, dB, dBm
Relative expanded uncertainty (k = 2, level of confidence 95 %) in %: 1.0
Comparison with reference detector
Wavelengths: 1480 nm to 1570 nm
Bandwidth: < 1 nm
 
Responsivity, spectral, irradiance. Broad band detector. Measurand unit, A/(W m-2), V/(W m-2), reading/(W m-2)
Relative expanded uncertainty (k = 2, level of confidence 95 %) in %: 0.3
Double grating monochromator and reference detectors
Wavelength: 316 nm to 404 nm
Bandwidth: < 10 nm
Power level: < 20 µW
Other types of detector can also be calibrated
Approved on 20 April 2017
 
Responsivity, spectral, irradiance. Broad band detector. Measurand unit, A/(W m-2), V/(W m-2), reading/(W m-2)
Relative expanded uncertainty (k = 2, level of confidence 95 %) in %: 0.1
Double grating monochromator and reference detectors
Wavelength: 405 nm to 919 nm
Bandwidth: < 10 nm
Power level: < 20 µW
Other types of detector can also be calibrated
Approved on 20 April 2017
 
Responsivity, spectral, irradiance. Broad band detector. Measurand unit, A/(W m-2), V/(W m-2), reading/(W m-2)
Relative expanded uncertainty (k = 2, level of confidence 95 %) in %: 0.3
Double grating monochromator and reference detectors
Wavelength: 920 nm to 1000 nm
Bandwidth: < 10 nm
Power level: < 20 µW
Other types of detector can also be calibrated
Approved on 20 April 2017
 
Responsivity, spectral, irradiance. Broad band detector. Measurand unit, A/(W m-2), V/(W m-2), reading/(W m-2)
Relative expanded uncertainty (k = 2, level of confidence 95 %) in %: 0.3
Double grating monochromator and reference detectors
Wavelength: 1001 nm to 1400 nm
Bandwidth: < 10 nm
Power level: < 20 µW
Other types of detector can also be calibrated
Approved on 20 April 2017
 
Responsivity, spectral, irradiance. Broad band detector. Measurand unit, A/(W m-2), V/(W m-2), reading/(W m-2)
Relative expanded uncertainty (k = 2, level of confidence 95 %) in %: 0.3 to 0.4 (depending on wavelength)
Double grating monochromator and reference detectors
Wavelength: 1401 nm to 1800 nm
Bandwidth: < 10 nm
Power level: < 20 µW
Other types of detector can also be calibrated
Approved on 20 April 2017
 
Responsivity, spectral, irradiance. Spectroradiometer. Measurand unit, A/(W m-2 nm), V/(W m-2 nm), reading/(W m-2)
Relative expanded uncertainty (k = 2, level of confidence 95 %) in %: 7.3 to 3.2, varies with wavelength
Tungsten or deuterium reference lamps
Wavelength range: 200 nm to 400 nm
Bandwidth: > 0.1 nm
Power level: < 0.3 (W/m2)/nm
Other types of source can also be used
 
Responsivity, spectral, irradiance. Spectroradiometer. Measurand unit, A/(W m-2 nm), V/(W m-2 nm), reading/(W m-2)
Relative expanded uncertainty (k = 2, level of confidence 95 %) in %: 1.9
Tungsten reference lamps
Wavelength range: 400 nm to 700 nm
Bandwidth: > 0.1 nm
Power level: < 0.3 (W/m2)/nm
Other types of source can also be used