BEHA UNITEST 9038 Mode D'emploi page 15

Operation
Continous AC Voltage Detection:
The UNITEST Wallscanner is designed to detect either
90...230 V AC in a HOT electrical wire.
Once voltage has been detected, the UNITEST Wallcanner
displays a flashing voltage icon (see figure 7). The voltage
detection feature works continuously in all settings for safe-
ty.
A static charge may develop on dry wall which will
spread the voltage detection at least 30 cm from both
sides of the actual electrical wire. To narrow the detec-
tion, hold the UNITEST Wallscanner approximately 2 -
3 cm from the wall, while scanning.
For exact detection of electrical wire we recommend the
UNITEST Cable Locator Cat.-No. 2032.
Voltage detection in conduit, behind metalized wall
covering, and behind plywood sheerwall is NOT guar-
anteed. If the construction situation has plywood or
thick wood backing behind dry wall, use extra caution.
Fig. 7
NORMAL and DEEP-Operation Tips:
The following tips help achieve the best results from the
UNITEST
Wallscanner.
Low Battery and Sensitivity Test: To test the UNITEST
Wallscanner's battery strength and sensitivity, place the
UNITEST Wallscanner in NORMAL mode and hold the
UNITEST Wallscanner away from any surface. Press and
hold the activation „ON / MODE" switch till the bargraph is
in the display. Then lef the activation switch go. Until the
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READY indicator lights. Move the palm of the free hand to-
wards the back of the unit. When the hand is approximate-
ly 5 to 6 cm away from the back of the UNITEST Wallscan-
ner, the LCD bars should begin to move towards the
midpoint of the display. Moving the hand away should cause
the bars to return to the side of the display. If the bars do
not react accordingly, it is time to replace the UNITEST
Wallscanner's battery (see para 5.1).
To avoid interference and loss of accuracy, do not place the
„free" hand within 15 cm of the UNITEST Wallscanner while
calibrating or scanning.
For best results the UNITEST Wallscanner should always be
held parallel to and scanned perpendicular to the object one
is trying to locate. If the user is uncertain which way the ob-
jects run, this can be determined by first scanning in a per-
pendicular direction.
Double Studs and Solid Headers:
These members are usually found around doors and win-
dows. The UNITEST Wallscanner signals a wider-than-nor-
mal measurement when these situations are detected.
Wallpaper:
The UNITEST Wallscanner functions normally on walls cov-
ered with wallpaper or fabric, unless the materials are metal-
lic foil or contain metallic fibers.
Plaster and Lath:
The UNITEST Wallscanner may work well in situations
where lath and plaster are found, providing the lath is wood
and the plaster is not excessively thick.
Acoustic Ceilings:
When scanning a ceiling with an uneven surface, place card-
board on the ceiling and scan over the cardboard. When
using this technique, calibration must be perfomed with the
cardboard in place.
Operation
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