Procedure
Connect the Signal Clamp to the Transmitter.
Place the Signal Clamp around the pipe or cable, ensuring the jaws are
closed. Switch on the Transmitter.
Note that unless a disconnected pipe or cable is grounded, it cannot
generally be located using a Signal Clamp.
Locating a Sonde
The SuperC.A.T is capable of locating a Radiodetection Sonde. Before
attempting to locate a Sonde ensure that the Sonde’s batteries are fully
charged. Radiodetection recommends using new or fully recharged
batteries at the beginning of each day and preferably at the start of each
job. Also check that the Sonde and Receiver are operating at the same
frequency and are working correctly.
To test the Sonde and Receiver, position the Sonde at a distance equal
to its rated depth range from the Receiver. Point the Receiver at the
Sonde with its blade parallel to the direction the Sonde is travelling.
Check that the bar graph shows more than 50
%
at high sensitivity
Note: the blade of the new Receiver must be in line with the Sonde; this
is the opposite to Line locate method.
Procedure
Attach the Sonde to the rod and insert it into the Drain or Duct to be
mapped. Keep the Sonde just in view.
Hold the Receiver vertically directly over the Sonde with the blade in
line with the Sonde’s orientation.
Adjust the sensitivity of the Receiver to give a bar graph reading
between 60-80%.
A Sonde radiates a peak field from the center of its axis with ghost
signals at each side of the peak. Move the Receiver to one side and
then along the axis of the Sonde forwards and backwards to detect the
ghost signals.
Radiodetection recommends locating the ghost signals as finding them
confirms the position of the main peak. To lose the ghost signals, reduce
the sensitivity of the Receiver; this should
leave only the main peak signal detectable.
With the Receiver sensitivity set as desired,
propel the Sonde along three or four meters
and stop. Place the Receiver over the
estimated position of the Sonde and:
Move the Receiver backwards and
forwards with the blade’s orientation
parallel to the Sonde.
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