Gas analyzer

Claim 1

IN A GAS ANALYZER, AN ACOUSTIC RESONATOR HAVING LOW ACOUSTIC LOSES, SAID RESONATOR BEING CLOSED AT ITS ENDS BY THE DIAPHRAGMS OF, RESPECTIVELY, A DRIVER TRANSDUCER AND A RECEIVER TRANSDUCER, SAID RESONATOR BEING DIVIDED INTO TWO PARALLEL RESONANT CAVITIES OF SUBSTNATIALLY EQUAL LENGTH BUT UNEQUAL VOLUME, THE ADJACENT ENDS OF SAID CAVITIES BEING CONNECTED TO ONE ANOTHER, AND AN OSCILLATOR CONNECTED TO SAID DRIVER TRANSDUCER TO EXCITE A STANDING WAVE OF HIGH AMPLITUDE IN SAID RESONANT CAVITIES AT SUBSTANTIALLY THE FUNDAMENTLA RESONANT FREQUENCY OF THE RESONATOR, SAID TRANSDUCER DISAPHRAGMS BEING LOCATED AT POINTS OF HIGH ACOUSTIC PRESSURE IN SAID RESONATOR ADJACENT THE TWO JUNCTION POINTS OF SAID CAVITIES RESPECTIVELY, SAID RESONATOR INCLUDING AN INLET PORT FOR THE GAS TO BE ANALYZED AT A POINT OF LOW ACOUSTIC PRESSURE IN THE LARGER VOLUME CAVITY AND AN OUTLET PORT AT A POINT OF LOW ACOUSTIC PRESSURE IN THE SMALLER VOLUME CAVITY SO THAT A SUBSTANTIALLY COMPLETE RESPONSE TO A CHANGE IN CHARACTER OF THE INCOMING GAS IS EFFECTED BEFORE THERE IS A COMPLETE CHANGE IN THE CHARACTER OF THE GAS SAMPLE IN THE CAVITIES.