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1.3 Radio frequency detection mode:
It is mainly used to detect the metal pipeline that
is sensitive to the radio frequency.
2.Active mode
The active source operates by applying a signal of the specific frequency from the
transmitter to the pipeline, and then positioning and tracking the pipeline with the receiver.
Using the active mode can not only locate the pipelineaccurately, track the pipeline and
measure the depth, but also detect the coating damage pointson the underground
pipeline accurately and determine the size of the damage point of the coating.
Two methods: direct connection and inductiveconnection. Direct connection is the
ideal way to track the pipeline while the inductive connectionis the most convenient way
to find the underground pipeline in the region.
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1
）
Direct Method
The transmitter is connected directly with the pipeline and produces the strongest
signal in the pipeline. This method should be the priority in the probing pipeline. It is
suitable for continuous tracking and positioning of various underground pipelines,
positioning and depth measuring with high precision.
1)Connection
Turn off the transmitter and insert the connecting wire into the transmitter output jack.
The red wire is connected to the target line (if it is a power cable, the power must be shut
off). If it cannot be connected directly, connect the magnet to the pipe and then clamp the
magnet, if necessary, clear the corrosive joints to ensure a good electrical connection.
The other black wire is connected to the ground, which should be far away from the target
line and at right angles to the possible direction of the target pipeline. Be careful not to
route the ground wire across other underground pipelines to prevent signals from being
affected on non-target pipelines. If there is no available grounding point, you can use the
grounding rod into the ground; the black wire is connected to the grounding rod. If the
ground connection is too dry, some water can be put here to improve the grounding effect.
If possible, the grounding point should not be less than 5 meters from the transmitter.
Содержание HZ-5000
Страница 1: ...HZ 5000 Underground Cable Detector User Manual Huazheng Electric Manufacturing Baoding Co Ltd...
Страница 35: ...33 Figure a Illustration of Deeper Pipes Figure b Illustration of T Branch Pipe...
Страница 36: ...34 Figure c Illustration of the Pipe that Changes Directions Figure D Illustration of Detection of Pipe Ends...
Страница 37: ...35 Figure e Illustration of Detection under Steel Mesh Net Illustration of Depth Measurement...
