| 摘要 |
Device for avoiding fluid delivery errors, comprising a primary coil ( 6 ), placed in a container ( 1 ) in the vicinity of a fluid delivery orifice ( 2 ) of the container, a control and measurement electric circuit ( 7 ) supplying power to the primary coil ( 6 ) to generate electromagnetic waves in the fluid delivery orifice ( 2 ), detector means ( 7, 8 ) sensitive to the waveform of the currents or voltages that appear in the primary coil ( 6 ) and that distinguish the presence and the type of fluid delivery nozzle ( 4 ) as a function of said waveform of the currents or voltages in the primary coil ( 6 ). Comparator means ( 11 ) determine if the measured oscillation frequency (f<SUB>m</SUB>) is different from a reference oscillation frequency (f<SUB>r</SUB>). If necessary, the user is warned, by alarm means ( 12 ), that he is about to fill his container ( 1 ) with the wrong type of fluid.
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