PASSIVE MARKER with an increase in detection range

摘要

The invention relates to a device for the search of underground utilities and can be used in the construction and operation of the service lines:. General use, CCTV, pipeline connections, waste water and sewerage, water, power, etc. The marker comprises a hollow spherical body, partially filled with an electrically insulating liquid dielectric, LC-circuit tuned to a resonant frequency, loop coil, formed frameless sintered from wires with plastic insulation, the float has a diameter n greater than the diameter of the coil LC-circuit is formed of a material with a closed cell structure, for example of foamed plastic, with a groove for accommodation of electronic components.