Analyzer

Claim 1

IN AN ANALYZER, IN COMBINATION, A RADIATION SOURCE, A RADIATION DETECTOR ADAPTED TO RECEIVE RADIATION FROM SAID SOURCE, A SAMPLE CELL AND A STANDARD CELL BOTH INTERPOSED IN THE PATH OF RADIATION PASSING FROM SAID SOURCE TO SAID DETECTOR, AN INDICATING CIRCUIT CONNECTED TO SAID DETECTOR TO PRODUCE AN OUTPUT REPRESENTATIVE OF THE INTENSITY OF RADIATION INCIDENT THEREON, A STANDARDIZATION CIRCUIT CONNECTED TO SAID INDICATING CIRCUIT TO VARY A PARAMETER THEREOF, A SOURCE (A) OF STANDARD FLUID, A SOURCE (B) OF SAMPLE FLUID, AND A SOURCE (C) OF FLUID SUBSTANTIALLY TRANSPARENT TO SAID RADIATION, A FIRST THREE-WAY VALVE SELECTIVELY CONNECTING SAID STANDARD CELL TO SOURCE (A) AND SOURCE (C), A SAMPLE LINE, A BYPASS LINE, A THREEWAY VALVE SELECTIVELY CONNECTING SOURCE (B) TO SAID SAMPLE LINE AND SAID BYPASS LINE, A THREE-WAY VALVE SELECTIVELY CONNECTING SAID SAMPLE CELL TO SAID SAMPLE LINE AND SOURCE (C), AND A TIMER OPERATIVELY CONNECTED TO SAID VALVES AND SAID CIRCUITS, SAID TIMER BEING CONSTRUCTED AND ARRANGED TO ALTERNATELY (1) ENERGIZE SAID INDICATING CIRCUIT, PASS SAMPLE FLUID FROM SOURCE (B) TO SAID SAMPLE CELL, AND PASS TRANSPARENT FLUID FROM SOURCE (C) TO SAID STANDARD CELL AND (2) ENERGIZE SAID STANDARIDIZATION CIRCUIT, BYPASS THE SAMPLE FROM SOURCE (B), PASS STANDARD FLUID FROM SOURCE (A) TO THE STANDARD CELL, AND PASS TRANSPARENT FLUID FROM SOURCE (C) THROUGH THE SAMPLE CELL.