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The cable warning tape is firmly combined by the bottom film and facial mask, and the bottom film and aluminum foil, and is knurled as a whole. The track cable warning tape is printed with striking warning words, which will not fade or fade. Now let's understand the physical properties and detection items of the cable warning tape.

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Physical properties of cable warning tape

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

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

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(3) Each roll of track cable warning tape shall be powered on and the resistance shall be less than 20 Ω/100m (detected by ohmmeter).

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

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Detection of cable warning tape

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The common method for detecting the cable warning tape is electromagnetic method. The induced current of the metal foil carried in the warning belt of the trace cable under the action of the electromagnetic field will produce a secondary field. It can be detected on the ground with a detection instrument to determine the location 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).

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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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In addition, warning tapes shall be laid continuously along the buried gas pipeline. Before laying the warning tapes, the laying surface shall be compacted and laid flat above the pipeline. The distance from the pipe location should be 0.3~0.5m, but it shall not be laid in the subgrade and pavement. Please visit our website for more precautions Ask!