GAS ANALYZER Russian patent published in 2005 - IPC

FIELD: aids for gas inspection.

SUBSTANCE: device is based upon principles of operation of ternary electrolytic cells and can be used for measuring gas concentration at industrial areas and gas concentration in liquids. Gas analyzer has ternary electrolytic cell provided with measuring electrode and reference electrode, communication line made in form of coaxial two-enveloped cable and operational amplifier provided with measuring device at its output. Potential output of reference electrode is surrounded with guard electrode made in form of coaxial electro-conducting envelope placed inside external electro-conducting envelope, which is connected with measuring electrode. Central conductor of cable is connected with reference electrode and non-inverting input of operational amplifier. Internal envelope of cable is connected with guard electrode and inverting input of operational amplifier that is coupled with negative feedback. Measuring electrode is connected with zero point of measuring circuit through external screen cable envelope.

EFFECT: improved precision of measurement of electromotive force of sensor.

2 dwg