Patent ID: 7043967

Claim:
A sensor device for monitoring the condition of a fluid comprising: a member; a plurality of liquid sensors provided at various lengths along said member and each comprising at least two wires or wire rods for measuring liquid parameters of the fluid, said at least two wires or wire rods are adapted to be electrically connected to one another by the fluid when said at least two wires or wire rods are immersed in and in contact with the fluid to complete an electrical circuit such that in use current passes between said at least two wires or wire rods through the fluid in order to monitor the condition of the fluid; and a plurality of vapor sensors in contact with vapors of the fluid for measuring vapor parameters of the fluid coupled to said member, at least one of said plurality of vapor sensors comprising conductive surfaces adapted to be electrically connected to one another by vapor of the fluid such that in use current passes between said conductive surfaces through the vapor, wherein said plurality of liquid sensors and plurality of vapor sensors are positioned a distance from one another so that said plurality of vapor sensors do not contact a liquid of the fluid.