Method of and apparatus for monitoring the surface level of mate

Details Method of and apparatus for monitoring the surface level of mate Method of and apparatus for monitoring the surface level of mate

1984-07-02

1986-10-07

Walton, G. L.

Fluid handling

Processes

With control of flow by a condition or characteristic of a...

137392, 73304R, 164156, 164450, 164452, 222 1, 222 64, 222 56, F17D 300, B22D 1116

Patent

active

046153519

ABSTRACT:
The impedance of a zone above bulk material in a bin is measured as a probe is reciprocated toward and away from the material in this zone. The direction-change location of the probe which corresponds to the measured impedance reaching a set point value, is detected and utilized to provide the control signal for automatically replenishing the material in the bin.

REFERENCES:
patent: 2548696 (1951-04-01), Barstow et al.
patent: 2698539 (1955-01-01), Gridel et al.
patent: 2851404 (1958-09-01), Jackson, Jr. et al.
patent: 3486660 (1969-12-01), Heintz
patent: 3511580 (1970-05-01), Eckhardt et al.
patent: 3591312 (1971-07-01), Eckhardt
patent: 4470446 (1984-09-01), Kamikawa et al.

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