10
7.1 Typical Signal Responses
The metal handles on the
septic tank cover will provide
a usable signal to determine
the location of the actual cover
(
Fig. 6
).
Large metal objects may
cause double signals as
indicated (
Fig. 7
).
The center of the cover is
found by sweeping the locator
back and forth to create a ring
pattern response. The center
null will designate the cover’s
center.
The joints, elbows and ends
of iron pipes will create the
strongest signals (
Fig. 8
).
Hold the locator in a vertical
position while searching to produce the
best results.
Sewer Cover
Signal Response
Signal Response
Signal Response
Signal Response
