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Dionex ED50A Electrochemical Detector
•
Turn on the pump.
•
Turn on the cell and allow the baseline to stabilize. The detector output
normally drifts downward for about 1 hour as the baseline stabilizes.
DC Amperometry Mode
•
Enter the applied potential on the
on the
METHOD
•
If necessary, calibrate the reference electrode from the
screen (press
•
If necessary, polish the working electrode (see Section 5.2).
•
Verify that the cell is installed and that all tubing has been connected properly.
See Section B.5 for cell installation instructions.
•
Turn on the pump.
•
Turn on the cell and allow the baseline to stabilize.
•
When the working electrode is glassy carbon, the detector output typically
drifts downward for up to one day. Setting up the Dionex ED50A the day
before beginning an analysis allows enough time for the baseline noise to
diminish considerably. To conserve mobile phase during this time, set the
flow rate to 25% of the value required for the analysis. The Dionex ED50A
will stabilize quickly after the flow rate is increased to the proper value.
3.2
Initial Screens
Each time the Dionex ED50A power is turned on, the
displayed. The revision codes on the
and BIOS, in the event that service is ever needed. If the Dionex ED50A is
3-2
MAIN
screen.
,
,
).
Menu
8
0
POWER-UP
or
screen or, if using a method,
DETAIL
pH CALIBRATION
POWER-UP
screen identify the Moduleware
screen is
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