A system for measuring dissolved oxygen in a fluid employs a galvanic electrode operated in a transient mode. In operation, the galvanic electrode is intermittently coupled and decoupled, under computer control, to and from a sampling system. The sampling system samples the transient current which results...http://www.google.es/patents/US4921582?utm_source=gb-gplus-sharePatente US4921582 - Dissolved oxygen measuring method