Huazheng HZ-5000, Руководство пользователя

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Illustration of Induction Search
By means of induction search, you can detect the missed pipeline of the passive search
and other pipelines that do not sense the 50Hz signal.
Technique:
Keep the distance between the receiver and the transmitter. In the inductive connection
mode, the transmitter emits signals to the target pipeline and also sends signals into the
air, which may cause interference in the detection work near the transmitter. The
inspector needs to check that the receiver is detecting the signal in the pipeline instead of
the signal directly from the transmitter. Move the transmitter a meter or two. If the signal
from the pipeline also moves along with it, this indicates that the receiver is too close to
the transmitter. Another way to check whether a receiver receives a transmitter signal is
to point the receiver tothe transmitter. If the signal strength does not change or increase,
it means that the receiver received the signal directly from the transmitter. In this case,
reduce the transmitter output power and the receiver sensitivity. The receiver may also
have to leave the transmitter 25 to 30 meters away. Do not place the transmitter on the
manhole cover as this will prevent the signal from being applied to the target pipeline.
2.Pipeline Tracking, Positioning and Depth Measurement
Apply the transmitter signal to an accessible location on a buried pipe or cable such as
containers, valves, street lamps, etc., track the area outside of the pipeline and make a
mark.
For those Pipelines that need to be detected, they can be traced till they reach covers,