2.
Both persons:
Start walking parallel to each other.
☞
The tracing signal is induced
directly onto the utility and
indicated on the locator.
0016801_001
3.
In the presence of a detectable utility,
the locator emits a tone and the signal
strength indicators rise and fall as you
pass over the utility.
Return to the position where the Locate
screen shows a peak reading. Mark the
position of a utility with marker paint,
pegs, flags or something similar.
☞
Never drive pegs into the
ground over the utility!
☞
To trace a specific utility, use
the pinpointing and tracing
methods. Refer to "5.1 How
to Pinpoint a Utility" and "5.2
500
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4.
Turn through 90 ° and repeat the proc-
ess.
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☞
Pinpoint and trace utilities until you are satisfied that the area has
been adequately tested.
5.4.4
Induction Mode: Radial-Sweep Method
Use the Radial-Sweep method to discover utilities coming from a known point
such as a telecommunications chamber.
☞
Two people are required for this process: one for operating the loca-
tor and one for operating the transmitter.
☞
Set the transmitter and locator to 33 kHz.
1.
Person operating the transmitter:
Hold the transmitter close to the ground
with the arrows on the lid vertical and
with the lid facing the person who oper-
ates the locator.
Person operating the locator:
Position the locator at a minimum dis-
tance of 10 m/33 ft away from the trans-
mitter.
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Radial-Sweep method
32
Applications
