Dionex CD20/CD25/CD25A, ED40/ED50/ED50A, and IC20/IC25/IC25A Electrochemical DetectorsDionex Detectors
Dionex CD20/CD25/CD25A, ED40/ED50/ED50A, and IC20/IC25/IC25A Electrochemical Detectors
In addition to the standard commands available for all detectors (see 
Dionex Detectors), Dionex electrochemical detectors provide special commands (see the table below; please note that the display Filter level determines which commands are displayed). The Data_Collection_Rate command and the analog output commands are available for all Dionex electrochemical detectors in any operating mode. The Mode command is available only for the ED40/ED50/ED50A detectors. Other special commands depend on the selected operating mode.
|
Command |
Description |
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Sets the rate at which Chromeleon collects digital data points from the detector. |
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Mode |
(Available only for the ED40/ED50/ED50A) Select the operating mode: conductivity, integrated amperometry, or DC amperometry. |
Analog Output Commands (All Modes)
|
Command |
Description |
|
Sets the full-scale analog out voltage. |
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Sends a positive pulse to the detector’s analog output as an event marker. |
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Sets the offset for the analog output signal. |
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Switches the analog output polarity (+/-). |
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Sets the range of a full-scale recorder response. |
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Sets how quickly the detector responds to a change in signal. |
Special Commands (Conductivity Mode)
The following commands are available for conductivity detectors (CD20/CD25/CD25A, ED40/ED50/ED50A, or IC20/IC25/IC25A):
|
Command |
Description |
|
DS3_Temperature |
Sets the DS3 temperature. |
|
SRS_Current |
For CD20/CD25, ED40/ED50, IC20/IC25 only: Sets the current supplied to the SRS. |
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Suppressor_Current |
For CD25A, ED50A, and IC25A only: Sets the current supplied to the suppressor. |
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Suppressor_Type |
For CD25A, ED50A, and IC25A only: Sets the installed Suppressor. |
|
Sets the temperature compensation factor, which is used to stabilize conductivity readings. |
Special Commands (DC Amperometry Mode)
The following commands are available for the ED40/ED50/ED50A detectors in DC amperometry mode:
|
Command |
Description |
|
Cell |
Turns the cell on and off. |
|
DC_Voltage |
Sets the fixed potential applied to the working electrode, in the range of -2.04V to +2.04V. |
|
Electrode |
Select the type of electrode installed. |
Special Commands (Integrated Amperometry Mode)
The following commands are available for the ED40/ED50/ED50A detectors in integrated amperometry mode:
|
Command |
Description |
|
Cell |
Turns the cell on and off. |
|
Electrode |
Select the reference electrode type. |
|
Define a waveform (a plot of potential vs. time). |
Calibration Commands (For CD25A, ED50A, and IC25A Only)
|
Command |
Description |
|
LeakDet |
Performs the leak detector calibration. |
|
CondCell |
Performs the conductivity cell calibration |
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DownloadCalibration |
Downloads the selected set of calibration values to the detector. |
|
DownloadCalibration Parameter |
Selects the set of calibration values (Current, Previous, or Factory) to be downloaded. |
Diagnostic Commands (For CD25A, ED50A, and IC25A Only)
|
Command |
Description |
|
LeakDetTest |
Performs a test of the leak detector. |
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LeakDetTestDate |
Reports the date of the leak detector test. |
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LeakDetTestResult |
Reports the result (pass or fail) of the leak detector test. |