| 摘要 |
FIELD: liquid level controlling equipment. ^ SUBSTANCE: apparatus has mechanical vibration system set at predetermined filling level and composed of cylindrical casing 1 closed at its end part with membrane 3. During operation of apparatus, piezoelectric members, which are arranged in column 13, impart vibratory motions to mechanical vibration system. Vibratory motions dependent upon liquid filling level at the given time are perceived by piezoelectric members adapted for conversion and/or processing of vibratory motions. Said members are arranged between first and second pestles 19, 21 adjoining with their end part to column 13 clamped along longitudinal axis of casing 1 between binding screw 24 and membrane. ^ EFFECT: increased efficiency and wider range of usage. ^ 9 cl, 16 dwg |
