AN OPEN-TYPE AUTOMATIC NEPHELOMETER FOR ATMOSPHERIC STUDIES AND ITS APPLICATIONS

An intelligent nephelometer of the open type designed for in situ stud ies of the atmosphere is described. The nephelometer operates in the n ear IR wavelength range. The construction and the concept of the devic e allow it either to work independently during several hours or to be operated remotely at a distance up to 500 m from the central host comp uter. This nephelometer is a new class of intelligent instruments inte nded for long-term application in open air and allowing the receipt of qualitative and quantitative information about the scattering coeffic ient in situ.