51
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 Using A-Frame to Accurately Locate Fault Points
Summary of Contents for HZ-5000
Page 1: ...HZ 5000 Underground Cable Detector User Manual Huazheng Electric Manufacturing Baoding Co Ltd...
Page 35: ...33 Figure a Illustration of Deeper Pipes Figure b Illustration of T Branch Pipe...
Page 37: ...35 Figure e Illustration of Detection under Steel Mesh Net Illustration of Depth Measurement...
