TIANJIN GREWIN TECHNOLOGY CO.,LTD.
Web:www.grewin-tech.com Wh86-13072088960
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TIANJIN GREWIN TECHNOLOGY CO.,LTD.
Address:
2# MeiNian Plaza No.16 DongTing Road,Hexi Distr,300222,Tianjin China
.
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Illustration of Positioning Fault Point using A Frame
If the position of the pipeline cannot be
determined during the fault point
search, the mode key needs to be
pressed at this time and the working
mode need to be switched to the single
horizontal coil, double horizontal coil or
vertical coil to accurately position the
target pipeline. After the positioning is
completed, press the mode button
again to select the external signal
working mode and continue the fault
point search.
It can be seen from the above figure
that when the A-frame approaches the fault
point, the receiver's horizontal signal will gradually increase (the readings in the figure are only
diagrams, indicating that the signal size changes with the detection position).
When it is necessary to accurately locate the fault point, the accurate position of the fault
point can be found when the A-frame is turned to be perpendicular to the cable. At this time, the
location of the A-frame is directly above the point of failure.
If the cable is under the cement and asphalt pavement, special signal pick-up probes can be
used, which can effectively solve the problem that other instruments cannot be tested on cement
and asphalt pavement. If necessary, you can use water to wet the road. This will be better.
Illustration of A Frame reading
