Heath Consultants Magna-Lock - Manual (Page 8)

8
Erase Button: This is an optional button that is primarily
used in locations where large metal objects normally inter-
fere with the desired operation of magnetic locators. Cyclone
fences, metal buildings, vehicles and other large magnetic
objects can be electronically erased with this button.
The operation of this feature is best defined by explain-
ing the typical locator without this feature. For example, typi-
cal magnetic locators will normally yield a screaming audio
tone when they are being operated in close proximity to a
metal fence. The magnetic field from this fence will usually
override the signal being sought from the buried object in
search of. The only option is to reduce the sensitivity until
the interference from the fence is minimized. However, the
locator’s sensitivity to the buried object is also minimized and
usually undetectable.
The new Magna-Lock and its “Erase” feature solves
this problem by providing an Erase button; simply press this
button when the interference is annoying and the metal struc-
ture is electronically erased. The audio tone returns to the
“no metal” tone; the search continues and the buried object is
located .
This erasing action is functional within a reasonable cir-
MAGNA-LOCK