FIELD: the invention is designed for measuring of the environmental flow rate.
SUBSTANCE: the rotameter has a conical tube with a scale, a non-magnetic float of the plate or of the disk type with constant magnet. The float has possibility to travel along the central guide in the shape of a thin wall ferromagnetic tube. Inside it there is a current distributor connected to the current impulses excitation generator. The ends of the ferromagnetic tubes are located in absorbers, the upper one of them is fixed on the body of the rotameter. From the side of the lower absorber left free and provided with a load a reading element in the shape of a magnetic field transformer( for example in the shape of an induction coil) is located near the central guide. The reading element is connected through a processing amplifier to the first input of a time interval separator block to whose second input an output of the impulse generator is connected.
EFFECT: increases accuracy of measuring at changing the temperature of the flow.
3 cl, 1 dwg
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