Product Manual

20
21
Ground Stake.
Black Cable.
Red Cable.
Longer Distance From Line.
27kHz 8kHz
MIX
0.5kHz
2 43
5
(A)(B)
27kHz is chosen automatically
when the Power Switch is turned on.
"Tick" "Tick"
"Tick"
POOR
(B)
(B)
Poor
Ground
Good
Ground
4. DIRECT CONNECTION MODE
The Direct Mode is usually preferred if
the pipeline or a tting, like a hydrant, is
exposed.
1. Plug the Direct Connection Mode cables
into the Transmitter at the connector on
its side. Connect the clamp of the red
cable to the pipeline at a hydrant bolt, and
connect the black cable to the ground
stake, Locate the ground stake adjacent
to the pipeline, 10-15 feet away.
2. Set the output mode at DIR for Direct Mode.
3. Choose a frequency from among the four
available 27kHz, 8kHz, .5kHz, or “Mix”
(all 3), using these considerations.
• For water pipelines and other
gasketed pipes, choose 27 kHz or
8 kHz. In different systems, one fre-
quency will be better than the other.
• For continuous conductors like cop-
per service lines and steel gas lines,
choose .5 kHz.
• For certain conductors, choose “Mix.”
4. Set up the Power Output Level with the
up/down arrow keys.
5. Check the Transmitter display for good
ground conductivity and good clamp con-
nections on the red cable and the black
cable. If 2 or 3 “ground symbols”
are shown, the current transmitted to the
line is good. If “poor ground” is displayed,
improve the clamp contact at the red
cable or move the black cable and ground
stake to a new location.
Finding the Optimum
Transmitter Location
In the Direct Mode, the location of the
ground stake can be critical to locating the
line accurately.
1. The ground stake should be located to
the side of the pipeline and as far away
from it as possible in order to maximize
the current ow in the line. The ground
stake should not be located past the end
of the line or close to an elbow. If these
are nearby, move the ground stake in the
opposite direction, away from them.
2. Check for multiple lines by moving the
Receiver across the entire area between
the ground stake and the red cable’s
clamp connection to the pipeline. If a
second or third line is detected in the
“straddle area,” move the ground stake to
the opposite side of the primary line to be
located.
3. If multiple lines are present, use as low a
frequency as possible, such as 8 kHz or
.5 kHz, to minimize or eliminate “jumping”
to other conductive lines.
OPERATION IN THE FIELDOPERATION IN THE FIELD