Gas analyzer

Claim 1

AN INSTRUMENT FOR ELECTRICALLY MEASURING THE RATIO OF COMPONENTS IN A GAS SAMPLE CONTAINING TWO COMPONENTS, ONE OF SAID COMPONENTS HAVING A THERMAL CONDUCTIVELY SUBSTANTIALLY GREATER THAN A STANDARD GAS AND THE OTHER HAVING A THERMAL CONDUCTIVITY SUBSTANTIALLY LESS THAN SAID STANDARD GAS WHICH COMPRISES: TWO SEPARATE GAS-RECEIVING CHAMBERS COMMUNICATING WITH A SOURCE OF SAID GAS SAMPLE: EACH OF SAID CHAMBERS BEING ADAPTED TO CONTAIN SOLID MATERIAL PROVIDING INLET FLOW CONDUITS THEREIN OF SUBSTANTIALLY EQUIVALENT GAS FLOW RESISTANCE; SAID SOLID MATERIAL IN A FIRST OF SAID CHAMBERS BEING ADAPTED TO ABSORB THE ONE OF SAID COMPONENTS IN THE GAS SAMPLE HAVING A THERMAL CONDUCTIVITY SUBSTANTIALLY LESS THAN SAID STANDARD GAS; A PAIR OF ELECTRICAL RESISTANCE ELEMENTS IN ONE OF SAID CHAMBERS AND CONSTITUTING DIAMETRICALLY OPPOSES SENSING ARMS OF A FOUR ARM WHEATSTONE BRIDGE CIRCUIT; A SECOND CHAMBER CONSTITUTING DIAMETRICALLY OPPOSED THE SECOND CHAMBER CONSTITUTING DIAMETRICALLY OPPOSED SENSING ARMS OF SAID BRIDGE CIRCUIT; AND GALVANOMETER MEANS POSITIONED IN SAID CIRCUIT TO MEASURE THE ELECTRICAL UNBALANCE BETWEEN SAID SENSING ARMS DUE TO/CHANGES IN THE PROPORTIONS OF COMPONENTS IN SAID GAS SAMPLE.