Product Manual
12
INDUCTIVE TRACING (without handle)
Use Inductive Tracing as a one-man operation when you know a
starting point of the object pipe or conductor. You will maximize
signal strength by having the bottom edge of the Transmitter
directly over and in line with the conductor you’re tracing. Placing
the receiver on its back will give no signal or a “null” directly over
the conductor and a signal on either side.
If you place the transmitter and receiver too close together “direct
air coupling” will result, meaning the transmitter is sending to the
receiver through the air, the electromagnetic eld is simply ignoring
your pipe. If this happens, you can either (1) turn the SENSITIVITY
control down until you lose the air signal, or (2) simply move the
receiver further away until the air signal fades.
NOTE: With the SENSITIVITY knob on full and the Sensitivity Selection
Switch set to NORMAL, the two units should be at least 30 feet
apart to avoid air coupling. With HIGH SENSITIVITY, they must be
even further apart.
13
INDUCTIVE LOCATING WHEN ONLY APPROXIMATE POSITION
OF A LINEAR CONDUCTOR IS KNOWN
Two people most efciently perform this operation. Each holds the
unit with its face towards him and parallel to the other’s instrument.
Standing at least 30 feet apart, they walk parallel to each other
from the curb toward the opposite side of the street. When the
two operators are directly over the pipe, the receiver meter and
speaker will indicate the location. The pipe is directly below the
point at which the maximum signal occurs.
If only one operator is available, he should begin by placing the
transmitter over and in line with an assumed position of the buried
conductor. While maintaining a distance of at least 30 feet from
the transmitter, hold the receiver parallel to the other instrument
and begin to walk forward until the signal reads its maximum
indication. In a one-person search, you may nd it necessary to
move the transmitter several times in order to be precisely over
the buried conductor.
PINPOINTING CENTER OF THE PIPELINE
After determining the position of the pipe, set the transmitter down
on its bottom edge and in line with the indicated position. Then, at
a distance of at least 30 feet, hold the receiver with its backside
down and begin moving the receiver from side to side over the
general location line of the conductor. This back and forth motion
will give a null directly over the position of the buried conductor.
MODES OF OPERATION
MODES OF OPERATION