|4961069||Dual optical level monitor|
A failure protected optical fluid monitor is disclosed that uses, in combination, a single prism paired systems of light sources and light detectors to determine whether or not liquid in a container is present at a predetermined level. A pair of light sou...
|4878019||Electrical sensing system for measuring ferrous particles within a fluid with temperature compensation circuit|
A magnetic sensor for the collection and measurement of ferrous particles through the use of an electronic tuned circuit is disclosed. The sensor contains an electrical inductance along with an integral magnet to attract ferrous particles suspended in the...
|4731578||Electrical sensing system for measuring ferrous particles within a fluid|
This invention relates to a device for detecting electrically inductive particles in a fluid medium and is of particular use for detecting ferrous particles in the lubricant of an engine or mechanical transmissions thereby giving warning of malfunction of...