MULTI-CHANNEL INSTRUMENT FOR IDENTIFICATION OF ODORS AND DETERMINATION OF CONCENTRATIONS OF THOSE

摘要

A multi-channel instrument for identification of odors and determination of concentrations of those includes a gas sensor placed in continuous flow reaction chamber with inlet as an opening for analyzed gas inflow and the outlet for discharge of gas, micro-processor unit. Incorporated are n gas sensors, placed in the continuous flow reaction chamber and which outputs are connected in pairs to the inputs of n generators on the basis of transistor structures with negative resistances, which outputs are in pairs connected to the inputs of n micro-electronic frequency meters, which outputs are connected to the input of the micro-processor unit, power supply block connected to the sensors, generators on the basis of transistor structures with negative resistance, micro-electronic frequency meters and micro-processor device, and device for representation of information, USB port, connected to the output of the micro-processor unit, and the USB port is connected to personal computer with special software providing measurement and graphic representation of the values of concentrations and determination of component composition of gas at any time instant at gas being analyzed flow through the reaction chamber.