13.
Operating
AC Power Cable Scanning Mode
This mode will allow you to scan for metal nails, screws, pipes, trunking, etc.
To scan for metal make sure the detector has been set to ‘AC Power’ mode
and calibrated as mentioned on page 7. To achieve a more accurate reading you
will need to scan in two passes or more.
WARNING
Electrical field detection will not work beyond a depth of 2” (51mm) from the
scanned surface. Conduits encased in concrete, behind sheer plywood, metallic
wall coverings or damp wall conditions will cause very limited detection and may
not be detected at all.
• FIRST PASS
As the detector has been calibrated, press and hold the ‘Calibrate’ button on the
side of the detector hand grip and move in the direction you want to scan. When
the scan bar reaches the top, mark the position on the surface using a pencil and
the ‘V’ grove and the top of the detector. Continue scanning across until you get
the indicator drops a little. Move back again until the indicator is as the top and
mark the position as previously done. This is the general area.
• SECOND PASS
Once you have marked the general area, place the detector on one of the marks
and turn it off, then on, select the ‘Metal’ mode and recalibrate. This will increase
the accuracy of the reading. Do a second pass of the area in the same manner
as the first pass, and mark as required. The center point between the two marks
will be the approximate middle. You can do this step multiple times to get an
even more accurate reading.
