Onboard low frequency transmitter
Included in the in-line tool and designed to indicate its location in the pipeline by means of the emitted low-frequency signal.
Universal recorder
Installed in the control (marker) points of the pipeline route to register the time of passage of the in-line tool by the emission of the low-frequency transmitter and/or magnetic field of the magnetic system.
Universal locator
Serves for monitoring the passage of an in-line tool, searching for and locating an in-line tool by low-frequency transmitter emission and/or the magnetic field of the magnetic system