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Investigating Or Analysing Materials By Optical Means
(AREA)
Abstract
FIELD: analytical instrument engineering. SUBSTANCE: gas analyzer has radiation source, working and support dishes, modulator, optical filters unit, radiation receivers unit, electronic processing unit. The modulator is made for in pairs separation of working and support beams to parts and simultaneous modulation of pairs of separated parts of the beams at different frequencies. Optical filters are separated to sections in the unit. Each section passes preset interval of wavelengths of optical radiation passes preset interval of wavelengths of optical radiation. The filters are mounted for pass of pairs of separated by modulator of parts of working and support beams through different sections of the filter. EFFECT: improved efficiency of measurement. 2 dwg
SU4397757/25A1988-03-221988-03-22Multicomponent gas analyzer
SU1616320A1
(en)
PROCESS FOR THE PREPARATION OF 1-PYRIDYL-ALKYL-4-ARYL-PIPERAZINES, THEIR SEPARATION IN RESPECTIVE OPTICAL ANTIPODES (ENANTIOMORPHS) AND THE STEREO-ISOMERS OBTAINED THEREBY