3879644 is referenced by 52 patents and cites 12 patents.

In an RF system which measures the level of materials, the probe includes a measuring electrode and a guard shield. The guard shield is interposed between the electrode and a conductive member, commonly the container for the material, throughout the body of the probe.

Title
Probe responsive to conditions of material
Application Number
05/299,439
Publication Number
3879644
Application Date
October 20, 1972
Publication Date
April 22, 1975
Inventor
Maltby Frederick L
Agent
Woodcock Washburn Kurtz & Mackiewicz
Assignee
Drexelbrook Controls
IPC
H01g 07/00
G01F 23/22
G01F 23/26
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