Inductive Connection; Blind Search - SubSurface Instruments PL-VF Series User Manual

This method is convenient to use, and services are not interrupted. No test cords or connections are
needed. The cable or pipe must have good insulation or non-conductive coating, or the operating
range will be short.
Turn the t
through 478 kHz. Place t
Align the
T
ransmiTTer
the cable.
Start tracing the path with the r
shown above. Locate the cable or pipe, and follow the path. If the signal becomes weak, move the
t
ransmItter
The Blind Search locating techniques is used if the operator is not aware if a buried utility exists. Two
people are needed for this technique. The t
each other. Each operator walks at the same speed keeping a distance of 25 feet from each other.
When the receiver gives an audio response, then a buried utility is present between the r
the t
ransmItter
www.ssilocators.com
i
nduCtive
on. This method of signal application only works on frequencies from 33kHz
ransmItter
ransmItter on iTs side
on the side of the
arrows
Null, then move toward the expected cable path while looking for the signal carried by
to a point 25 feet behind the last strong signal, and continue searching.
.
25 Feet (7.5 Meters) Between Transmitter and Reciever
C
onneCtion
as close as possible to the path of the cable or pipe.
in line with the cable or pipe. First, locate the broad
transmItter
25 feet from the t
eceiver
DFF
F.1
F.2
kHz
mA
v
kM
SERIES
b s
lind earCh
and the r
ransmItter
TRANSMITTER
DFF
F.1
F.2
kHz
mA
v
kM
SERIES
RECEIVER
. Search in the 90º zone as
ransmItter
are Held 25 feet away from
eceIver
and
eceIver
09
SERIES