The article presents the results of studies of a jet multivibrator for measuring the parameters of technological processes such as: the speed of moving objects, the flow of liquids. The novelty of the proposed method is the repeated measurement of the current parameter per second with the averaging of the obtained values in the form of the oscillation frequency of the pressure signals of the working medium of the multivibrator. The advantages of measuring the parameters of technological processes by jet multivibrators from several jet amplifiers connected by a ring circuit are substantiated. The values of the measured parameters are represented by the proportional frequency of the pressure signals, converted into electrical signals of the same frequency and recorded by secondary equipment. Examples of calculations and experimental test data of an aircraft airspeed receiver and a flow meter of fluid products.