6 Commissioning, operation
WIKA Operating Instruction, Model CPH7600 21
14051628.
01
07/
2012
G
B/
D
6.1.2.3 Accessing other menus
In order to access further menus, select the "
MORE
" option in the main menu.
6.2 Using the backlighting
The backlight is controlled by the "
LIGHT
" button.
6.3 Using the "ZERO" function
When the
ZERO
key is pressed, the calibrator will zero the active display, as long as a pressure
mode is selected and the pressure is within the zero limit. The zero limits are within 5 % of the full
scale range of the selected sensor. If the display indicates "OL" the zero function will not operate.
The
ZERO
key is only used for pressure.
6.3.1 External pressure module (not absolute)
When a pressure module is selected in the active display and the
ZERO
key is pressed, the
calibrator subtracts the current displayed reading from the output value. The zero limits are within
10 % of the full scale range of the selected sensor. If the display indicates "OL" the zero function
will not operate.
6.3.2 External pressure module (absolute)
When an external absolute pressure module is selected in the active display and the
ZERO
key is
pressed, the calibrator prompts the user to enter the barometric reference pressure. For this the
arrow keys can be used. The sensor port should be opened (vented) to atmosphere while
performing this procedure.
6.4 Other menu controlled functions
There are sub-menus that can be accessed through the "
MORE
" option of the main
menu. A sub-menu contains three options. The first option is unique to this function. The
second and third options of a sub-menu are always the same. The "
NEXT
" option leads
to the next sub-menu and the "
DONE
" option returns to home.
For the last sub-menu the "
NEXT
" option wraps around to home.
Note on naming:
If a 'sub-menu' has further subdivisions, from now on it will be referred to as {function} main menu.
The "
CONTRAST
" sub-menu for example will be referred to as the "
CONTRAST
" main menu.
Otherwise it will be referred to as the {function} menu.
GB