Thermoelectric fluid sensor

Claim 1

A TRANSDUCER FOR DETERMINING WHETHER A CONTAINED FLUID IS ABOVE OR BELOW A KNOWN LEVEL, SAID TRANSDUCER COMPRISING A. A SUPPORT HOUSING HAVING A PERFORATE WALL FORMING A CAVITY SECTION AND HAVING A BASE SECTION AT ONE END OF THE CAVITY SECTION, B. A RESISTIVE WIRE SUPPORTED BY SAID HOUSING WITH AT LEAST A PORTION THEREOF OPENLY EXPOSED IN SAID CAVITY SECTION TO ENVIRONMENTAL FLUID, C. A THERMOCOUPLE (1) COMPRISING FIRST, SECOND AND THIRD SUCCESSIVELY CONNECTED CONDUCTIVE STRANDS FORMING A FIRST THERMOCOUPLE JUNCTION BETWEEN SAID FIRST AND SECOND STRANDS AND A SECOND THERMOCOUPLE JUNCTION BETWEEN SAID SECOND AND THIRD STRANDS. (2) SAID THERMOCOUPLE BEING SUPPORTED BY SAID HOUSING FROM SAID BASE SECTION WITH SAID JUNCTIONS DISPOSED WITHIN SAID CAVITY SECTION OPENLY SPACED FROM THE HOUSING WALLS AND RELATIVELY THERMALLY ISOLATED FROM SAID HOUSING AND OPENLY EXPOSED TO SUBSTANTIALLY THE SAME LEVEL OF ENVIRONMENTAL FLUID, (3) AT LEAST ONE OF SAID FIRST AND SECOND STRANDS BEING CONNECTED WITH SAID RESISTIVE WIRE PROXIMATE TO SAID FIRST THERMOCOUPLE JUNCTION, (4) SAID SECOND JUNCTION BEING REMOVED FROM SAID RESISTIVE WIRE TO HAVE RELATIVELY LOW HEAT TRANSFER THEREWITH.