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Step 4: Mark where the strongest signal appears.
Note:
1. AC Scan will only detect live (hot) unshielded AC wiring.
2. Factors like humidity, temperature, and even the minor electric
readings from your hand, which all have an impact on the readings from
the wall.
SCANNING DIFFERENT SURFACES
Press MODE button switch to the desired mode: Stud mode for finding
wood or metal studs for 3/4 in.(19mm); Deep Mode for scanning walls for
3/2 in. (38 mm) thick; Metal Scan for locating metal; or AC Scan for
locating live AC wiring.Unit will remain off if Power button is not pressed.
Wallpaper: TH250 that functions normally on walls covered with
wallpaper or fabric, unless the materials are metallic foil, contain metallic
fibers, or are still wet after application. Wallpaper may need to dry for
several weeks after application.
Freshly painted walls: May take one week or longer to dry after
application.
Lath & plaster: Due to irregularities in plaster thickness, it is difficult for
MultiScannerTH250 to locate studs in Stud modes. Change to Metal
Scan mode to locate the nail heads holding wood lath to the studs. If the
plaster has metal mesh reinforcement, TH250 may be unable to detect
through that material.
Extremely textured walls or acoustic ceilings:
When scanning a ceiling or wall with an uneven surface, place thin
cardboard on the surface to be scanned and scan over the cardboard in
Deep mode. If irregular scanning results are received, switch to Metal
Scan mode to locate nails or drywall screws that line up vertically where a
stud or joist is positioned.
Extremely textured walls or acoustic ceilings:
When scanning a ceiling or wall with an uneven surface, place thin
cardboard on the surface to be scanned and scan over the cardboard in
Deep mode. If irregular scanning results are received, switch to Metal
Scan mode to locate nails or drywall screws that line up vertically where a
stud or joist is positioned.
Wood flooring, subflooring, or gypsum drywall over plywood
sheathing: Use Deep mode and move the tool slowly. The Signal
Strength Indicator may only display 1 or 2 bars when the tool locates a
stud through thick surfaces.
TH250 cannot scan for wood studs and joists through concrete or
carpet and padding. In problematic situations, try using Metal Scan to
locate nails or screws that may line up vertically where a stud or joist is
positioned.
Note: Sensing depth and accuracy can vary due to moisture, content of
materials, wall texture, and paint.
WARNING
1. Electrical field locators may not detect live AC wires if wires are more
than 2 in. (51 mm) from the scanned surface, in concrete, encased in
conduit, present behind a plywood shear wall or metallic wall covering, or
if moisture is present in the environment or scanned surface.Always turn
off power when working near electrical wires.
2. Do not assume there are no live electrical wires in the wall. do not take
actions that could be dangerous if the wall contains a live electrical wire.
always turn off the electrical power, gas, and water supplies before
penetrating a surface. failure to follow these instructions may result in
electric shock, fire, and/or serious injury or property damage.always turn
off power when working near electrical wires.
3. Do not rely exclusively on the detector to locate items behind the
scanned surface. Use other information sources to help locate items
before penetrating the surface. Such additional sources include
construction plans, visible points of entry of pipes and wiring into walls,
such as in a basement, and in standard 16 and 24 in. (41 and 61 cm) stud
spacing practices.
If you have any problems, please feel free to contact us at
support@tavool.com
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