Filter radiometers

Filter radiometers are widely in use to establish detector based spectral irradiance and irradiance responsivity scales in UV-VIS-NIR, luminous intensity and illuminance responsivity scales at level of high accuracy. To meet the customers’ needs we have improved the construction of our filter radiometers. Our filter radiometer consists of a temperature-controlled filter holder with manually exchangeable filter mounts and a multi-element photodetector. The temperature of the filter compartment is set by using Peltier’ cooler/heater. The actual temperature of the filter depends on the feedback thermistor and filter size. Our filter compartments support filter outer diameters up to 25 mm (1 inch). ... Click to open full document as pdf file

Filter radiometer