Using The Vloc-9800; Using The Receiver; Line Locating; Depth & Current Measurement - Vivax vLoc-9800 User Handbook Manual

8

Using the vLoc-9800

Using the vLoc-9800
8.1

Using the Receiver

8.1.1

Line Locating

Line locating is a term used to describe the action of locating the position of a pipe or cable. When line
locating, the receiver should be held with the display forward, and then swept to the left and right, across the
suspected direction of the buried line. The largest signal will be detected when directly over the line. If the
direction of the line is known it should be possible to trace the route using the Left Right Auto mode. If in
doubt, switch to the manual mode to confirm the position and direction. The Auto and Manual modes are
explained in more detail in Section 3.
The receiver should be kept parallel to the ground – and should not be flipped up at the end of each pass.
See diagram (a).
To establish the direction of the cable – use the "M" pushbutton to select the Manual mode. Pinpoint the line –
by carefully establishing the exact "Peak" position. Then (with the base of the receiver on the ground) rotate
the receiver through 90 degrees, as you do this the signal being received will reduce substantially (possibly
disappear). Then rotate the locator until you find the maximum "Peak". The front of the locator is again facing
in the direction of the buried line. See diagram (b).
8.1.2 Depth & Current Measurement
Pinpoint the exact position of the cables as above:
Once the position and direction of the cable has been established, stand with the base of the locator on the
ground – with the locator in the absolute "Peak" position (over and in line). Then press the "i" information
pushbutton briefly, the current and depth will be displayed.
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