FUME METER OF EXHAUST OF DIESEL ENGINES Russian patent published in 1995 - IPC

FIELD: measurement technology. SUBSTANCE: fume meter includes sample-taking tube, diffuser with two holes for suction of atmospheric air, measurement chamber composed of two compartments with three holes made in upper and lower walls of measurement compartment and two windows made in opposite walls of checking compartment, temperature- sensitive element, amplifier, multiplexer, analog-to-digital converter, demultiplexer, control unit, radiation source, forming optical system, optical commutator with drive, three inclined mirrors, protective glass, flat mirror, interference filter, receiving optical system and photodetector with preamplifier. EFFECT: enhanced authenticity of measurements. 1 dwg