UNIVERSAL BALL FLOW METER OF CONDUCTIVE LIQUID Russian patent published in 2025 - IPC G01F1/05 

FIELD: measuring.

SUBSTANCE: invention relates to the measuring equipment and can be used in the conductive liquid flow metering in the chemical, food and pharmaceutical industry, in the electric and heat power engineering, in the housing and communal services and the social sphere of the economy, where it is required to measure the extremely low flow rates of the liquid in a very wide dynamic range (Q_MAX/Q_MIN) with the required accuracy. Conductive liquid ball flow meter consists of a housing, a jet-directing device, a ball made of a dielectric material with zero buoyancy in the liquid, which can freely rotate in annular channel formed between housing and jet-directing device, two electrodes arranged in annular channel, one of which is signal, and electronic transducer connected by means of electrodes with annular channel. Through the resistor, the signal electrode is connected to the stabilized supply voltage positive bus and through the separating capacitor to the gate of the field-effect transistor with an insulated gate, which drain is connected through the separating capacitor to the integrated analogue timer input, wherein resistive dividers of stabilized supply voltage are connected to field-effect transistor gate and timer input.

EFFECT: ensuring independence of metrological characteristics of a ball-type flowmeter of an electroconductive liquid from the type, electrical conductivity and temperature of the liquid, from electrical and electromagnetic interference, from the frequency of rotation of the ball in the annular channel, as well as increasing its load-carrying capacity.

1 cl, 3 dwg