Gas sensors research and control system

Abstract

An installation for the gas sensors research has been made. The installation is connected to the computer by AT90S8535 microprocesor. The device allows obtaining the following dependences simultaneously: sensibility dependence time function; resistance dependence time function; temperature dependence time function; resistance derivative dependence time function; resistance dependence temperature function. The installation is endowed with a simple software in use, a mass for measurements, a pump to pump the gases, a flux meter, and a central command bar.