Level sensing system
A system is described for sensing the level of a body of liquid in a container, the system comprising: (a) a shaft secured parallel to a vertical axis of the container, the shaft having therein a plurality of magnetic position responsive switches; (b) a reference elemental situated circumferentially about the shaft and secured at a fixed level thereto, the reference element having a magnetic axis co-directional with the axis of the shaft; and (c) a measuring and sensing element situated circumferentially about the shaft and vertically above the reference element but without securement thereto, the measuring element having a magnetic axis co-directional with the axis of the reference element, the axis having a polarity in repulsive relationship to the magnetic axis of the reference element, the sensing element having a negative buoyancy relative to the specific gravity of the liquid within the container.
- Assignee:
- Chem Tec Equipment Corp., Deerfield Beach, FL
- Patent Number(s):
- US 4796473
- OSTI ID:
- 6159628
- Resource Relation:
- Patent File Date: Filed date 4 May 1987
- Country of Publication:
- United States
- Language:
- English
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