Abstract: In a device and method for measuring a mass flow rate of a fluid, a housing has two hollow pipes communicating with one another and having a fluid inlet and a fluid outlet, an electromagnetic excitation unit excites vibrations in the hollow pipes, two electromagnetic adapters are associated correspondingly with the two pipes and provides signals which are proportional to a speed of vibrations of the pipes of said housing, and an electronic block connected with the electromagnetic excitation unit and with the electromagnetic adapters determines a mass flow rate of a fluid, a correction associated with inclusions in the fluid and constituted by a ratio of a voltage amplitude of the adapters and a voltage amplitude of excitation of vibrations by the electromagnetic excitation unit, and a corrected mass flow rate of the fluid based on the determined mass flow and the determined correction.

Abstract: For measuring a quantity of water on oil and oil products, a hollow coaxial resonator unit is provided, through which oil or oil product is supplied to pass through, an electrical measuring bridge composed of electrical resistances is arranged so that the resonator is connected with the electrical measuring bridge; changes in a frequency characteristic of the resonator are measured when oil or oil product passes through it, and a quantity of water in the oil or oil product is determined based on the measured changes in the frequency characteristic of the resonator.

Abstract: A device for separating air and vapor from liquids has a hollow substantially vertical housing, an inlet provided in the housing for introducing a liquid which contains air and vapor, first outlet for withdrawing from the housing the liquid after separation of air and vapor therefrom and located in a lower area of the housing, a second outlet for withdrawing from the housing the air and vapor separated from the liquid and located in an upper area of the housing, and a separating grate located above the first outlet and intensifying the separation of the air and vapor from the liquid.

Abstract: An apparatus for measurement of liquid oil products has a local control unit; a grounding element; an electric pump aggregate; a filter; a gas separator; an electromagnetically operated valve; an indication and control unit; a sensor for sensing temperature of liquid oil product; a mass flow meter located between an outlet of the gas separator and an input of the electromagnetically operated valve and connected with the indication and control block; and a device for determining a water quantity in the oil product connected with the indication and control block.

Abstract: A fuel dispensing apparatus has an electronic counting unit; a hydraulic device including a filter, a mass flow meter, a valve for changing a flow provided with an electromagnetic control, a pumping hose, a gas indicator, a dispensing faucet, and an electrically-operated pump; and a fuel reservoir, with the electrically-operated pump arranged in the fuel reservoir immersed in fuel and connected by a pipeline through the filter with the mass flow meter having an outlet connected with the valve for changing a flow rate with the electromagnetic control, an outlet of the valve is connected with the pumping hose, the gas indicator, and the dispensing faucet, and a temperature sensor which determines a temperature of fuel and provide information for dispensing an accurate does requested by a user regardless of fluctuations of the fuel temperature.