WYLER BlueLEVEL-2D, Руководство пользователя, Страница: 18 / 65

page 18 of 65 pages
3 O
PERATING INSTRUCTIONS
B
LUE
LEVEL-2D
The BlueLEVEL-2D offers a wide range of functions and adjustment possibilities. The list of functions
appears when the key is pressed. With the keys the desired function
can be selected and with it will be started. If during 10 seconds n o further key is
operated, the function list will be left. With the key a function selected can be
abandoned. Already entered changes of parameters will be rejected and the BlueLEVEL -2D will return
to the previously used display mode.
Here after the single functions will be described.
3.1 "ZERO-S
ETTING
" / A
BSOLUTE
ZERO
Absolute ZERO means that the instrument shows the measuring value "0" if the measuring surface of
the instrument is aligned exactly according to gravity (true horizontal or true vertica l).
3.1.1 S
ET ABSOLUTE
ZERO (
WITH A REVERSAL MEASUREMENT
)
The absolute zero is used as the base for absolute inclination measurements. In order to achieve the
best possible precision please observe that the measuring object (support) and the BlueLEVEL -2D
have the same temperature and that the instrument is in operation for several minutes before starting a
measurement.
The surface needs to have a very good flatness .
Mark the precise position and particularly the direction of the BlueLEVEL -2D in order to be able to turn
the instrument by 180 degrees and to put it in opposite direction at the very same spot.
The absolute zero will be determined from a rev ersal
measurement (two measurements in opposite
direction but at the same spot). Use for this pro cedure
an adequate surface (rigid and stable support, as flat
as possible and as horizontal as possible), where you
put the BlueLEVEL-2D. Mark the position and the
direction of the BlueLEVEL-2D precisely and turn it on
the same spot by 180 degrees.
The "ZERO-OFFSET" w ill be stored in the
BlueLEVEL-2D
EXAMPLE:
With the key select the menu item [Abs ZERO] and
confirm this selection with .
In the display the position of the instrument for the first
measurement will be shown.
Put the BlueLEVEL-2D to the first position and press the key
for reading the first measuring value. Alternatively
the first measuring value can also be entered with the zapper.