14
15
Locating the Pipe or cable
Having chosen the method of applying the transmitter signal to the pipe or cable, the
locator is now ready to use.
Note: When the locator is positioned at a specific distance from the target line,
the depth and current values will automatically display, although these values
will not be accurate until the locator is directly over the target line and correctly
orientated.
When directly over the target line, both depth and current readings will be at their
minimum. This can be a very useful feature when attempting to pinpoint the target line.
Note: To display depth and current readings, the locator must be orientated in line
with the target by using the compass and left / right arrows. The compass feature
and left / right arrows in Figure 2 show the locator directly in line with the target.
Figure 1:
Figure 1 shows the locator in Guidance
Mode with the locator positioned to the
left of the target line.
In this position the Proportional Left
arrow is displayed, indicating the direction
in which the locator should be moved
towards the target line. The target position
indicator indicates the target positioned
to the right of the locator and can be used
to guide the locator towards the target
line. The signal strength value will be displayed, indicating the strength of the signal
from the target line. In this position the tone from the speaker of the locator will be
continuous.
With the aid of the compass, the locator can be positioned in line with the target line
enabling both depth and current readings to be displayed.
As the locator is moved towards the right, the tail on the proportional left arrow will
reduce, the target position indicator will move from the right, towards the centre, the
speaker tone will reduce and the numerical signal strength value will increase.
Use the proportional arrows, target position indicator and signal strength value to guide
the locator directly over the target line.
Figure 2
Figure 2 shows the locator in Guidance
Mode and directly over the target line. In
this position the left and right arrow heads
will be displayed simultaneously, target
position indicator in the centre, the signal
strength value at its maximum, speaker
tone silent and both depth and current
readings at their minimum.
Figure 3:
Figure 3 shows the locator in Guidance
Mode and positioned to the right of the
target line. In this position the Proportional
Right arrow is displayed, indicating the
direction in which the locator should be
moved towards the target line. The target
position indicator indicates the target
positioned to the left of the locator and
can be used to guide the locator towards
the target line. The signal strength value
will be displayed, indicating the strength of the signal from the target line. In this
position the tone from the speaker of the locator will be pulsed.
With the aid of the compass, the locator can be positioned in line with the target line
enabling both depth and current readings to be displayed.
As the locator is moved towards the left, the tail on the proportional right arrow will
reduce, the target position indicator will move from the left, towards the centre, the
pulsing tone from the speaker will reduce and the numerical signal strength value will
increase.
Use the proportional arrows, target position indicator and signal strength value to guide
the locator directly over the target line.
Figure 4:
With the locator powered up in guidance
mode, a momentary press of the mode
key will change the mode of operation to
power mode. In this mode, the bar graph
signal strength indicator, numerical signal
strength (%), numerical gain setting
and depth (m / ft) are available. The
proportional left/right arrows and target
position indicator will not be available
(Refer to Figure 4).
