TM
21
Works to a depth of 2m (6’6”)
Locating the Ferret from above ground
5.4 Using the Sonde
Move receiver along line
of pipe, not across
Connect a 33kHz signal generator
using the trace lead supplied with
the Ferret Leak Locator.
Null
Small Peak
Small Peak
Large Peak
Dig depth is three quarters
of distance
d
between the
two nulls.
d
Null
33kHz receiver