Tracer wire method is a common method to solve the problem of PE pipeline positioning and detection, which can be discussed from the aspects of material selection, construction technology, detection technology and on-site actual use of the tracer wire. The following manufacturers of buried trace wires will explain the detection technology when they are used.

1. The direct connection method is used to detect the trace line, which has high signal-to-noise ratio, less interference, easy detection, and accurate and reliable detection results.

2. The tracer wire of PE pipeline in urban area should not be detected by induction method. The pipelines in urban areas are dense, while the trace lines are relatively small, and the resistance of the grounding circuit is generally much larger than that of other pipelines, so the induced current signal generated is often much weaker than that of non target pipelines, and the trace line signal is easy to be covered up, causing false measurement.

3. When detecting the trace line of short branch pipeline, the end of the branch trace line (i.e. the test pile) should be selected as the signal application point, so that the signal strength on the branch trace line will not miss the branch point.

4. When using the direct connection method to detect the trace line, try to select a lower working frequency, and try not to cross connect the ground wire of the transmitter to other pipelines to reduce signal induction or crosstalk to other pipelines.

5. During the detection, the power supply point shall be changed according to the actual situation and then the detection shall be repeated to check the coincidence of the two detection results, so as to improve the accuracy and precision of the detection.

6. For the PE pipeline laid by directional drilling, because the buried depth of the tracer wire is large (may be greater than 5m), in addition to selecting a lower working frequency to reduce electromagnetic field induction to other pipelines, try to improve the grounding conditions, increase the power supply current on the tracer wire, and improve the signal-to-noise ratio, so as to obtain better detection effect.

This is the end of the relevant content of the detection technology analysis when the buried tracer wire is used. You can come to our website anytime you have any ideas about it http://webtest2.daoshangbao.cn Consult!