FIELD: pipe line transport; check of motion of cleaning and diagnostic objects in pipe line in flow of product being transferred, for example, scrapers, separators, containers, flaw detectors, etc. SUBSTANCE: device includes receiving converter, amplifier, high-pass filter and actuating element. Device is also provided with low-pass filter whose input is connected with output of amplifier and output is connected with input of adder through additional amplifier; second input of adder is connected with output of high-pass filter and out-put is connected with actuating element. EFFECT: extended functional capabilities. 1 dwg
