Hydrogen detector probe system and hydrogen detector probe holder

Claim 1

IN COMBINATION: A VACUUM TUBE HOLDER HAVING AN OUTER WALL PROVIDING AN INTERIOR THEREOF AND HAVING A SEALED BASE PROVIDED WITH FIRST ELECTRICAL CONNECTORS IN SAID BASE, SAID HOLDER INCLUDING MEANS FOR PREVENTING FLOW OF FLUID THROUGH THE OUTER WALL THEREOF TO THE INTERIOF THEREOF TOWARD SAID BASE AND SAID FIRST ELECTRICAL CONNECTORS; ELECTRICAL CONDUCTORS CONNECTED TO SAID ELECTRICAL CONNECTORS IN THE INTERIOR OF SAID HOLDER, SAID CONDUCTORS FORMING A CABLE EXTENDING AWAY FROM SAID HOLDER; A SEALED VACUUM TUBE HAVING A SHELL AND A BASE PROVIDED WITH SECOND ELECTRICAL CONNECTORS MATING WITH SAID FIRST ELECTRICAL CONNECTORS, SAID BASE OF SAIC VACUUM TUBE BEING MOUNTED ON THE BASE OF SAID HOLDER AND HAVING A PLURALITY OF ELECTRODES CONNECTED TO SAID SECOND ELECTRICAL CONNECTORS AND FORMING A JOINT BETWEEN SAID HOLDER AND SAID TUBE, THE SHELL OF SAID VACUUM TUBE HAVING A PORTION THEREOF WHICH IS HYDROGEN-PERMEABLE; MOISTURE-IMPERMEABLE MEANS SEALING THE JOINT BETWEEN SAID HOLDER AND SAID TUBE AGAINST THE FLOW OF MOISTURE INTO SAID JOINT; AND CIRCUIT MEANS CONNECTED TO THE ENDS OF SAID CONDUCTORS EXTENDING AWAY FROM SAID HOLDER AND SAID TUBE, SAD CIRCUIT MEANS COMPRISING ION CURRENT GENERATING MEANS CONNECTED TO THE ENDS OF SAID CONNECTOR MEANS