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Dionex ED50A Electrochemical Detector
value first observed, check the reference electrode by following the
instructions in Section 4.12.
You can also monitor the pH reading from Chromeleon 6.8. The value is
displayed on the control panel, and you can set upper and lower pH limits
in the Program Wizard. An alarm is displayed if the limits are exceeded.
2.5
Functional Description
2.5.1
Operating and Control Modes
The operating mode determines how the Dionex ED50A receives
operating commands:
•
•
The control mode determines when operating commands are executed:
•
•
The table below summarizes the various operating and control mode
configurations. Select the modes from the front panel
DETAIL
Operating/Control Mode
Local/Direct Control
Local/Method
Locked Remote/Direct
Control
2-14
In Local mode, the Dionex ED50A receives commands from the front
control panel buttons and screens.
In Locked Remote mode, Chromeleon 6.8 software sends commands
from the host computer via the DX-LAN interface.
In Direct control, the Dionex ED50A executes commands
immediately.
In Method control, the Dionex ED50A executes commands according
to the timed steps in a method. The method is programmed from the
Dionex ED50A front panel.
screen, or from the chromatography software.
Detector Operation
Commands are entered from the Dionex ED50A front
control panel and executed immediately after being
entered.
Commands are entered from the Dionex ED50A front
control panel and executed by running a method
programmed from the front panel.
Commands are sent from Chromeleon 6.8 and executed
immediately when received.
screen or
MAIN
Doc. 065551-01 6/13
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