IM 12B6B3-E-H
4-2 Operation
Figure 4-1. PH402 operator interface
4-2. Explanation of operating keys
MODE key This key toggles between the measuring and maintenance modes. Press once to obtain
access to the maintenance function menu.
AUTO CAL
MAN CAL
DISPLAY
SETPOINT
WASH
MAN.IMP
TEMPERATURE
HOLD
Press again to return to the measuring mode (press twice when hold is activated).
YES/NO keys These are used to select choices from the menu.
YES is used to accept a menu selection.
NO is used to reject a selection, or to move ahead to the next option.
DATA ENTRY keys ( ENT)
is used as a “cursor” key. Each press on this key moves the cursor or flashing digit
one place to the right. This is used to select the digit to be changed when entering
numerical data.
is used to change the value of a selected digit. Each press on this key increases the
value by one unit. The value can not be decreased, so in order to obtain a lower
value, increase past nine to zero, then increase to the required number.
ENT When the required value has been set using the > & ^ keys, press ENT to confirm the
data entry. Please note that the EXA 402 does not register any change of data until
the ENT key is pressed.
*
key This is the commissioning mode key. It is used to obtain access to the commissioning
menu. This can only be done with the cover removed or opened. Once this button has
been used to initiate the commissioning menu, follow the prompts and use the other keys
as described above.
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