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toward the ground in the direction of the cable and listen for the
beeping signal.
Additionally, the feedback of your locate is given in 3 manners;
audible external speaker, headset, or analog meter. Any of these
three options indicate signal strength that is being received by the
Pro800D.
Finding Faults –
Breaks or severe wire damage can be found
with the Pro800D. The setup of the unit is the same as when
tracing wire. The difference comes in the reception. Whereas the
traced wire continues to emit a signal along the path of the cable,
a break will cause the signal to stop at the point of the break. A
nick or damage will cause the signal drop to a lower level but not
necessarily end. Either the speaker or the analog meter on the
receiver will indicate this drop.
Be sure the cable or wire you are tracking is grounded. To trace a
cable, it must be grounded, either mechanically or capacitively.
Mechanical means a direct physical ground. Capacitively
generally means non-ducted cable. The signal needs a path to
return to the ground stake and without it, you will not get a good
locate. A bad ground is indicated on the transmitter analog meter
when the needle cannot achieve a 4 or better even at full power.
In many cases, a direct buried cable fault will provide this
grounding and allow for a cable to be located. When no current is
flowing and the transmitter is on, the analog meter will show 2.
Do not let the receiver level go above 10. You are looking for a
drop in signal and you may not see it if the analog meter is
pegged to the right.
A general rule is the greater the damage to a cable, the greater
the drop off in signal at the point of damage. Conversely, minimal
damage or weak grounding will show little change. This is an art
and small faults are sometimes difficult to locate. Practice and
experience will help immensely in this task.
Finding Solenoids and Valves –
There are generally 2
accepted methods to find a lost solenoid/valve.
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