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Metrotech's small sondes
trace to a depth of 8 feet in air, have a diameter of .875" and are 4.5"
long. The large sondes trace to a depth from 15 to 30 feet in air and
has a diameter of 2" and is 6.5" long. They are available indifferent
frequencies 982Hz (Cast iron pipe), 9.82kHz (Cable ducts, Plastic, Clay
pipe), 82kHz (Clay, Concrete, Plastic pipe), 83kHz (Clay, Concrete,
Plastic pipe). |
