2323
15. Measure the depth and current of each to identify the target path. The
depth of the target path should be as expected and the relative current
should compare to the relative current of the transmitter.
Note: The current reading will decrease steadily as the locator moves
away from the transmitter. When using higher frequencies, this decline is
more evident.
16. Adjust the gain so that the bar graph responds to the target path (open
when off path, almost completely closed when directly over target).
17. Trace the cable/pipe at a slow walk while moving the receiver in a side-
to-side motion, keeping the receiver perpendicular to the ground.
18. Measure the depth and current occasionally to verify target path.
Note: In order to measure the depth and current accurately, the operator
must pinpoint the target pipe or cable, and the receiver handle should be
in-line with the target path.
* While in DirPk mode, find the highest signal strength [10].
* Lower the tip of the receiver to the ground. Twist the receiver left and
right while watching the signal strength.
* When the highest reading is displayed, the handle of the unit is in line
with the target pipe or cable.
Occasionally, signal will appear on adjacent cables or pipes. Compare
the relative and actual current readings over each path to help determine
the target path. Current readings will be significantly less on the
adjacent cable compared to the target path.
19. As tracing proceeds, remember that the most powerful signal is near the
transmitter. As the receiver gets farther away from the transmitter the
signal strength [10] decreases. It may be necessary to readjust the gain
as needed; to be sure there is adequate signal for the receiver to operate.
Press the Gain up/down [4] when the bar graph is no longer visible (too
little signal) or when the bar graph is closed (too much signal).
20. Trace the path until you reach a logical termination point (i.e.: terminal,
meter, cabinet, etc).
To Next Page
Loading...
Need help?
General
