Menu Structure - In-situ ChemScan mini UV254 Installation, Operation And Maintenance Manual

Menu Structure

The analyzer is equipped with an operator interface consisting of a display and keypad. The
operational parameters can be adjusted through the operator interface. NOTE: Whenever a
"+" is displayed in the lower right of the display, use the [+] key to display more menu choices.
A complete menu structure table can be found at the end of this section.
The keypad is used to enter numerical values and to select menu choices for the analyzer. There
are four main menu paths:
1) ONLINE
2) ZERO
3) CLEAN
4) SETUP
NOTE: Data from the analyzer is frequently used by process control algorithms. Incorrect
analyzer readings due to calibration, testing, or monitoring activities could severely disrupt these
control loops. For this reason, the analyzer 4-20 ma communication outputs remain frozen at the
most recent ONLINE data in all but the force-output modes when the analyzer is taken offline.
ONLINE selection
Pressing [1] from the MAIN MENU screen places the analyzer in the ON-LINE mode. The flowing
sample is continuously analyzed, and the resulting readings are displayed on the front panel.
Simultaneously, the same data is sent to the 4-20mA-output channel and to the serial port.
Pressing the [MAIN MENU] key will return to the [MAIN MENU]; if a security code is set, the
operator will be prompted to enter the code (default is "0") before the analyzer will exit the
ONLINE mode. Upon leaving the ONLINE mode, the 4-20 outputs will be frozen at the last
measured value and the serial output will stop updating.
ZERO menu
Pressing [2] opens a menu, which offers the option of manual zeroing or triggering the automatic
clean/zero cycle. Pressing the [MAIN MENU] key will return to the MAIN MENU screen.
CLEAN menu
Pressing [3] opens another menu layer where the cleaning and zeroing solutions can be
manually pumped into the instrument. Select either, then press [+] to start the flow and [–] to
stop the flow. Pressing the [MAIN MENU] key will return to the MAIN MENU.
SETUP menu
Provides options for configuration of the analyzer and the various output channels.
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