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2) Parameter Setting
Turn on the transmitter and the display shows the selected frequency, transmitter
power and output parameters. According to the frequency required for measurement,
select the option with the frequency key. Press the frequency key, the frequency triangle
shape is lighted in the circle of 128Hz, 512Hz, 1KHz, 2KHZ, 8KHz, 33KHz, 65KHz and
83KHz. Select the corresponding frequency of the lighted triangle. The display indicates
the corresponding parameters (including output power, output voltage, output current and
ground resistance) according to the triangle indicator, and the parameter display is
selected with the measuring keys.
3)Grounding resistance check
The transmitter has a multi-meter function that automatically detects the ground
resistance. Select the output parameters to the Ω level, the grounding resistance will be
shownon the display. If the grounding resistance is too big, you must re-select the ground
point or add water at the ground to reduce the grounding resistance. If the grounding
resistance is too big, the power of the instrument cannot be increased.
Note: Be sure to connect the wires before the transmitter is switched on. If
using direct connection method in underground detection, the cable power switch
should be shut off first.
(2)Inductive connection Method
When the operator cannot directly apply the transmitter signal to the target pipeline,
the inductive connection can be used. There is a transmitter coil in the transmitter. When
the transmitter is turned on, the transmitter coil can directly sense the signal to the
pipeline under the transmitter and the receiver can receive the electromagnetic field
generated by the underground pipeline. The method is easy to use and there is no need
to connect the target pipeline, but with the method, the receiver can also sense the
signals from the adjacent non-target pipelines, and a portion of the energy is in loss of
surrounding soil due to the signal attenuates.
The inductive connection cannot apply a signal to a pipe under a metal manhole or a
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...
