Metrohm 781 pH/Ion Meter - Manual (Page 42)

4.2 Operating concept
32
780/781 pH/Ion Meter, Manual
4.2 Operating concept
The pH/Ion Meter provides two types of display:
1.
The measured value display.
This is the normal instrument display.
2. The menu display
This is used for editing various settings.
In the directly measuring working modes the current measured value is
shown together with the date and time in the measured value display. In
the Conc mode the method name and the type of ion selected are also
shown. If the result is to be printed out, or if a stirring sequence or the
entry of sample identifications (Id) are intended for recording a meas-
ured value, then this is started with <MEAS/PRINT>. In the Conc mode
with standard or sample addition or subtraction the last result to be de-
termined is always shown. In this case a measuring sequence is started
with <ENTER>. The measured value display changes when the operat-
ing mode of the pH/Ion Meter is changed with <MODE>. You can
easily see which mode is set from the measuring unit or the prefix 'pH'
shown in the display.
In each operating mode you can switch from the measured value dis-
play to the menu display with <CONFIG> or <PARAM>. This allows
the instrument configuration and the method parameters to be edited.
In the direct measuring modes measurement recording and evaluation
(e.g. automatic printing and limit monitoring) continues in the back-
ground. In the menu display it is also possible to change directly from
the configuration to parameter input with <PARAM> and vice versa
with <CONFIG>.