Sampling device for ph measurement in process streams

Claim 1

A DEVICE FOR MONITORING THE HYDROGEN ION CONCENTRATION OF THE FLUID IN A PROCESS STREAM COMPRISING, A PH CELL HAVING ITS BOTTOM END FORMING A SHALLOW RESERVOIR AND ADAPTED TO GENERATE AN ELECTRIC CURRENT PROPORTIONAL TO THE PH VALUE OF A FLUID IN THE RESERVOIR, A PROCESS VESSEL FOR CONTAINING THE PROCESS STREAM, AN INTAKE LINE BETWEEN THE VESSEL AND THE PH CELL, A JET OPERATED VACUUM PUMP CONNECTED TO THE INTAKE LINE FOR CAUSING FLUID TO FLOW IN THE INTAKE LINE, AN AIR SUPPLY CONNECTED TO THE INTAKE LINE BETWEEN THE VESSEL AND THE PUMP FOR CAUSING SAMPLES OF PROCESS STREAM FLUID TO INTERMITTENTLY FLOW INTO AND OUT OF THE PH CELL, A PORTION OF THE PROCESS STREAM REMAINING IN THE RESERVOIR, AN INLET TO THE PH CELL, MEANS FOR INTRODUCING AIR INTO THE PH CELL THROUGH THE INLET TO STOP THE FLOW OF PROCESS STREAM FLUID INTO THE PH CELL, MEANS FOR INTRODUCING A WASH SOLUTION FLUID OF PREDETERMINED PH VALUE SUBSTANTIALLY DIFFERENT FROM THE RANGE OF PH VALUES OF THE PROCESS STREAM INTO THE PH CELL THROUGH THE INLET, CAM DRIVEN MEANS FOR CONTROLLING THE AIR INTRODUCING MEANS AND THE WASH FLUID INTRODUCING MEANS TO REPLACE THE PROCESS STREAM FLUID INTRODUCING THEREWITH AT PREDETERMINED INTERVALS, AND MEANS ELECTRICALLY CONNECTED TO THE PH CELL AND RESPONSIVE TO THE ELECTRIC CURRENT GENERATED THEREIN FOR CONTINUOUSLY MEASURING AND RECORDING THE PH OF THE FLUID IN THE RESERVOIR WHEREBY A CONSTANT RECORDING OF THE PH VALUE OF THE WASH FLUID WOULD INDICATE A FAILURE OF THE SAMPLE INTRODUCING MEANS AND A CONSTANT RECORDING OF THE PH VALUE OF THE PROCESS STREAM FLUID WOULD INDICATE A FAILURE OF THE REPLACING MEANS.

Claim 2

A DEVICE FOR MONITORING THE HYDROGEN ION CONCENTRATION OF THE FLUID IN A PROCESS STREAM COMPRISING, A PH CELL HAVING ITS BOTTOM END FORMING A SHALLOW RESERVOIR AND ADAPTED TO GENERATE AN ELECTRIC CURRENT PROPORTIONAL TO THE PH VALUE OF A FLUID IN THE RESERVOIR, A PROCESS VESSEL FOR CONTAINING THE PROCESS STREAM, AN INTAKE LINE BETWEEN THE VESSEL AND THE PH CELL, A JET OPERATED VACUUM PUMP CONNECTED TO THE INTAKE LINE FOR CAUSING FLUID TO FLOW IN THE INTAKE LINE, AN AIR SUPPLY CONNECTED TO THE INTAKE LINE BETWEEN THE VESSEL AND THE PUMP FOR CAUSING SAMPLES OF PROCESS STREAM FLUID TO INTERMITTENTLY FLOW INTO AND OUT OF THE PH CELL, A PORTION OF THE PROCESS STREAM REMAINING IN THE RESERVOIR, AN INLET TO THE PH CELL, MEANS FOR INTRODUCING AIR INTO THE PH CELL THROUGH THE INLET TO STOP THE FLOW OF PROCESS STREAM FLUID INTO THE PH CELL, MEANS FOR INTRODUCING A WASH SOLUTION FLUID OF PREDETERMINED PH VALUE SUBSTANTIALLY DIFFERENT FROM THE RANGE OF PH VALUES OF THE PROCESS STREAM INTO THE PH CELL THROUGH THE INLET, CAM DRIVEN MEANS FOR CONTROLLING THE AIR INTRODUCING MEANS AND THE WASH FLUID INTRODUCING MEANS TO REPLACE THE PROCESS STREAM FLUID INTRODUCING THEREWITH AT PREDETERMINED INTERVALS, AND MEANS ELECTRICALLY CONNECTED TO THE PH CELL AND RESPONSIVE TO THE ELECTRIC CURRENT GENERATED THEREIN FOR CONTINUOUSLY MEASURING AND RECORDING THE PH OF THE FLUID IN THE RESERVOIR WHEREBY A CONSTANT RECORDING OF THE PH VALUE OF THE WASH FLUID WOULD INDICATE A FAILURE OF THE SAMPLE INTRODUCING MEANS AND A CONSTANT RECORDING OF THE PH VALUE OF THE PROCESS STREAM FLUID WOULD INDICATE A FAILURE OF THE REPLACING MEANS.