BTI Profiline Multi Finder Operating Instructions Manual page 12

For steel wire mesh and reinforcements in the scanned structural mate-
rial, an amplitude of the measuring indicator f is displayed over the com-
plete surface. In this case, always use the "Zoom" function for the scan.
For steel wire mesh, it is typical that the indicator for magnetic metals i
is displayed directly above the rebar; the indicator for non-magnetic met-
als j is displayed between the rebars.
Detecting Wooden Objects
When scanning for wooden objects, press the wood-detection button 5.
The wood detection indicator symbol b and the "Zoom" function indica-
tor d are indicated in the display and the arrow below the "Zoom" func-
tion indicator d flashes. The "AutoCal" calibration indicator g and the
illuminated ring 1 go out.
Position the measuring tool onto the surface being scanned. Then press
the "ZOOM" button 4 and keep it pressed. Now the illuminated ring 1
lights up green, the "AutoCal" calibration indicator g is displayed again,
the "Zoom" function indicator d as well as the arrow below it go out.
With the "ZOOM" button 4 pressed, move the measur-
ing tool uniformly above the structure without lifting it off
or changing the applied pressure. During the scan, the
felt pads 8 must always have contact with the structure.
When a wooden object is detected, an amplitude is dis-
played in the measuring indicator f. Move the measuring
tool over the surface repeatedly to localise the wooden
object more precisely. After moving over the same area
several times, the wooden object can be indicated quite accurately: The
illuminated ring 1 lights up red and a steady tone sounds as long as the
measuring tool is over the wooden object. The measuring indicator f has
the greatest amplitude over the centre of the wooden object. The
"Zoom" measuring indicator e is inactive when scanning for wooden
objects.
Caution: When having placed the measuring tool onto the surface to
be scanned under which a wooden object is coincidentally located, and
having moved it over the surface, the measuring indicator f, the arrow
below the "Zoom" function indicator d and the illuminated ring 1 flash
red. In this case, start the scan again by repositioning the measuring tool
somewhat offset onto the structure and pressing the "ZOOM" button 4
again.
When scanning for wooden objects, metal objects are sometimes also
indicated as objects found at depths between 20–50 mm. To distin-
guish between wooden and metal objects, switch to the detecting-metal
function (see Detecting Metal Objects). When an object is indicated at
the same location in this function, then it is clearly a metal object and not
a wooden object. To continue searching for wooden objects, switch
back to the detecting-wood function.
When scanning for deeply embedded wooden objects, you can
increase the sensitivity of the measuring tool. For this, press the wood-
detection button 5 for 2 seconds. The indication "DeepScan" h
appears in the display. Then carry on as usual with the wood scan. Due
to the higher sensitivity of the measuring tool in this function, the display
also reacts more sensitive. Therefore, move the measuring tool particu-
larly calm and evenly over the structure. To switch off the "DeepScan"
function, press the wood-detection button 5 again for 2 seconds.
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