The elimination of error of measurement of substance flow speed by the accounting of variation of its electrophysical parameters

In a paper the principles of design and work of device for measurement of substance flow speed based on phase method with homodyne frequency conversion is considered. In a paper it is discussed a problem of accounting influence the fluctuations of the substance electrophysical parameters in the flow. Principles of realization of noncontact microwave flowmeter with compensation of fluctuation of the electro-physical parameters in the flow are shown. It is shown the reception part of the device consists of the primary channel which extracts the information about the substance flow speed and reference one which allocates the information about electrophysical parameters of substance in the flow. It is shown the device contains the minimum number of demanded adjustment elements that positively impacts on its reliability and stability in the presence of different external actions. In a paper it is discussed the procedure of calibration of measuring device.