Microprocessor-based 250-1100 nm photometer with flat spectral response

The digital photometer system developed earlier has been upgraded by incorporating a microprocessor-based system with it. The optical response of the system is uniform in the detection range of 250-1100 nm. The associated non-linearity of measurements of high irradiance has also been removed by suitable circuit modifications. The system is now capable of storing time profiles of photometric data and has enhanced user-friendly options.