Flow detector

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G - Physics

01

F

G01F 3/00 (2006.01) A61M 5/168 (2006.01) G01F 1/66 (2006.01) G01F 1/708 (2006.01) G01P 5/18 (2006.01)

Patent

CA 2098997

2098997 9309406 PCTABS00022 A flow detector (1) for a liquid flowing from a nozzle (20) disposed at the apex of a transparent tubular container (15) and being discharged from the base of this container. The detector comprises a probe (4) coupled to the container (15) and provided with an optoelectronic transducer (40) which comprises a photoemitter (41) and a photodetector (42) and has its optical path (45) disposed through the container and intersecting a path (30) along which the liquid flow takes place. The detector (1) further comprises an electronic unit (12) provided with a processing circuit (57) receiving as input the signal generated by the photodetector (42) in order to generate as output a control signal which is a function of the variability over time of the input signal. This control signal is compared with a reference level in order to generate an alarm signal which indicates the absence of liquid flow.

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