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The common method for detecting cable warning tape is electromagnetic method. The induced current of the metal foil carried in the cable warning belt under the action of electromagnetic field will produce a secondary field. It can be detected on the ground with a detection instrument to determine the position of the cable warning tape. For example, the active source method of electromagnetic method has strong signal, high accuracy of positioning and depth determination, and is not interfered by other nearby pipelines (the detected cable warning tape needs to be exposed). When in use, one end of the transmitter is connected to the detected track band, and the other end is grounded or connected to the other end of the track band. The detector determines the spatial position of the track belt by detecting the change of magnetic induction intensity generated by the track belt.

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Structure of cable warning tape

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The bottom film and facial mask, and the bottom film and aluminum foil are firmly combined and knurled as a whole. The cable warning tape shall be printed with eye-catching and permanent warning words, which shall not fade or fade.

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Physical properties of cable warning tape

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(1) There is no joint in each roll of cable warning tape.

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(2) The peel strength of the two layers of plastic film of the cable warning tape shall be greater than 0.10N/mm (tensile speed 25mm/min).

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(3) Each reel of cable warning tape shall be powered on and the resistance shall be less than 20 Ω/100m (measured with ohmmeter).

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(4) The elongation of cable warning tape is ≥ 25%.

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The structure and physical performance of the cable warning tape will be explained here. If you have any doubts or needs about it, please come to our website at any time Consultation or telephone contact in the message!