Method and apparatus for measuring the liquid level in tanks sub

Details Method and apparatus for measuring the liquid level in tanks sub Method and apparatus for measuring the liquid level in tanks sub

1986-11-13

1988-09-06

Cuchlinski, Jr., William A.

Measuring and testing

Liquid level or depth gauge

Float

73308, 340618, 340529, 340 59, G01F 2336, G08B 2300

Patent

active

047683775

ABSTRACT:
It will thus be seen that the method for measuring the level of a liquid contained in a reservoir which is subjected to varying accelerations is carried out by means of a level sensor which signals when the level of the liquid drops below a predetermined level, and a warning device which is activated if the sensor signal is applied thereto uninterruptedly for a predetermined minimum period of time and results in maximizing functional reliability of the warning signal issuing means during all types of movement situations of the reservoir, while false alarms are virtually eliminated. This is accomlished in that each occurrence involving the uninterrupted application of a sensor signal for a period which is longer than the predetermined time period (t.sub.1) is registered as an event, and in that the warning device is activated after a predetermined number (n) of events have been registered within a predetermined period of time (m). The apparatus used to implement this method is comprised of a reservoir, a level sensor fixedly mounted therein for signaling when the liquid drops below a predetermined minimum level, a warning device which is activated by the level sensor after a sensor signal has been applied thereto uninterruptedly for a predetermined minimum period of time, and a warning signal indicating device as well as an event storage device for storing each activating event and for actuating the warning signal issuing device at the end of a preset event storage phase.

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