9
Sewer Cover
Signal Response
Signal Response
Signal Response
6.1 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.
Fig. 6
Fig. 7
Fig. 8
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