4 Instrument
4.1
Fig. 4 - 1
A ... LC display
B ... Viewing window for the measuring cell
C ... Soft keys
D ... "UP" and "DOWN" keys
E ... "↵" key
F
G ... "LIGHT" key for lighting up the display
H ... "HELP" key
I
XDLIB28
Front View
A
C
Front view and keypad
For inspecting the filling of the measuring cell (air bubbles).
For selecting displayed menu items on the screen (see Chapter 4.3).
Buttons for moving the cursor on the screen for selecting submenus
To confirm the entry or to toggle between the options.
... "PUMP" key for switching on the air pump to dry the measuring cell
... Green light indicates power-on
B
D
E
F
G
E N
4 Instrument
H
I
9