Apparatus for oxygen analysis of gases

• US 3,246,235 A
• Filed: 12/27/1961
• Issued: 04/12/1966
• Est. Priority Date: 12/30/1960
• Status: Expired due to Term

• Current Assignee: James Allsopp Peter
• Original Assignee: James Allsopp Peter
• Inventors: JAMES ALLSOPP PETER
• Application Number:
  US04/162,543
• Time in Patent Office: 1,567 Days
• US Class Current: 324/425
• CPC Class Codes: G01N 27/404 Cells with anode, cathode and cell electrolyte on the same side of a permeable membrane which separates them from the sample fluid , e.g. Clark-type oxygen sensors

Claims

1. APPARATUS CAPABLE OF DETECTING AND MEASURING THE PRESENCE OF SMALL AMOUNTS OF UNCOMBINED OXYGEN IN GASES, COMPRISING IN COMBINATION AN ELECTROLYTE IN A CONTAINER HAVING INLET AND OUTLET MEANS TO ACCOMMODATE A FLOW OF THE SAID GAS THROUGH THE SAID CONTAINER, IN THE SAID CONTAINER A FIRST ELECTRODE IN CONTACT WITH THE SAID ELECTROLYTE AND HAVING A SUBSTANTIAL PART OF ITS AREA EXTERNAL TO THE SAID ELECTROLYTE, SAID FIRST ELECTRODE BEING COMPOSED OF A MATERIAL WHICH IS NOT ATTACKED BY THE ELECTROLYTE IN THE PRESENCE OF ABSENCE OF THE SAID GAS FLOW, A CONDUIT FOR LEADING THE SAID GAS FLOW OVER THE SAID FIRST ELECTRODE, A CURRENT CONTROLLER MEANS CONNECTED ON ONE SIDE TO THE FIRST ELECTRODE BY A CONNECTION EXTERNAL TO THE ELECTROLYTE AND ON THE OTHER SIDE TO A SECOND ELECTRODE IN CONTACT WITH THE SAID ELECTROLYTE BY A CONNECTION EXTERNAL TO THE ELECTROLYTE AND ON THE OTHER SIDE TO A SECOND ELECTRODE IN CONTACT WITH THE SAID ELECTROLYTE BY A CONNECTION EXTERNAL TO THE SAID ELECTROLYTE SO THAT IT COMPLETES AN ELECTRIC CIRCUIT BETWEEN THE SAID FIRST AND SECOND ELECTRODES, THE SECOND ELECTRODE BEING COMPOSED OF A MATERIAL WHICH IS READILY ATTACKED BY THE ELECTROLYTE WHEN THE SAID FIRST ELECTRODE IS