Apparatus for recording discontinuities

Details Apparatus for recording discontinuities Apparatus for recording discontinuities

1974-05-21

1976-06-08

Queisser, Richard C.

Measuring and testing

Liquid analysis or analysis of the suspension of solids in a...

Content or effect of a constituent of a liquid mixture

G01N 2904

Patent

active

039615227

ABSTRACT:
In an apparatus for counting the faults contained in a given volume by reflection of ultrasonic waves from a transmitter there are provided pulse counters for registering any pulse constituting the video signal received by said counters which are preset to different actuation thresholds corresponding to different amplitude levels of the signals owing to the faults, said counters being subjected to a frequency divider and a time selector for avoiding counting the same fault several times and for authorizing counting during a time corresponding to the depth of the desired probing.

REFERENCES:
patent: 3287963 (1966-11-01), Stanya et al.
patent: 3416364 (1968-12-01), Wycherly et al.
patent: 3555889 (1971-01-01), Weighart
patent: 3677073 (1972-07-01), Morgan

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