Measuring and testing – With fluid pressure – Leakage
Patent
1980-11-19
1984-03-20
Karlsen, Ernest F.
Measuring and testing
With fluid pressure
Leakage
340605, G01M 328, G08B 2100
Patent
active
044373368
ABSTRACT:
A leak detection device for integrating a small amount of flow of fluid having a measuring unit capable of generating a series of pulses, a space between the pulses being varied in inverse proportion to the measured flow rate of fluid, a timer arranged to generate periodic timing signals for a deciding unit time interval for taking a measurement, a first integrating unit, a leakage decision unit and a second integrating unit. The first integrating unit is connected to receive and count the series of pulses from the flow measuring unit and to be reset by the respective timing signals from the timer. The leakage decision unit compares the corresponding value of the measured flow rate from the first integrating unit with a predetermined reference value, and the second integrating unit is connected for integrating the corresponding value of the measured flow rate from the first integrating unit in response to the leakage detection signals.
REFERENCES:
patent: 2710397 (1955-06-01), Foster
patent: 3064193 (1962-11-01), Grubb et al.
patent: 3987662 (1976-10-01), Hara et al.
patent: 4090179 (1978-05-01), Hirano
Karlsen Ernest F.
Ricoh Co. Ltd.
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