Goniophotometric 1) auto range switch 2) function: luminous flux, luminance, illuminance. 3) fine v() and cos corrected detector, class 1 according to gb/t7403 standard 4) low zero drift, high accuracy 5) 5 digit display 6) accuracy of luminous intensity: class 1 7) rs-232-c interface Hp200z-measurement accessories Integrating spheres 1) internal diameters: 0.5m/1.0m/1.5m/2.0m 2) work with all instrument systems spectrometers Photodetector 1) fine v()-approximation and cosine corrected. 2) accuracy: classa 1) auto range switch 2) function: luminous flux, luminance, illuminance. 3) fine v() and cos corrected detector, class 1 according to gb/t7403 standard 4) low zero drift, high accuracy 5) 5 digit display 6) accuracy of luminous intensity: class 1 7) rs-232-c interface Hp200z-measurement accessories Integrating spheres 1) internal diameters: 0.5m/1.0m/1.5m/2.0m 2) work with all instrument systems spectrometers Photodetector 1) fine v()-approximation and cosine corrected. 2) accuracy: classa