Multiplexed Galvanic Corrosion Experimental Sequence

Run the Multiplexed Galvanic Corrosion standard technique is run by selecting Experiment > Multiplexed DC > Mulitplexed Galvanic Corrosion from the Framework™ menu bar. This initiates the following sequence of events:

1. Framework creates a Runner window, and the MUXGCOR.EXP script is run in this window.

2. The script displays a Setup dialog box which becomes the active window. This dialog box allows you to specify the channels to be run, information concerning each channel, and global information about the entire experiment on all channels. Clicking the OK button accepts the parameters and starts the experimental run.

3. The script opens the electrochemical parameters file (SYSTEM.SET) and recovers the electrochemical system characteristics (βs, density, Equiv.Wt.) for each active cell from the file. If the file cannot be opened or the requested Setup Name cannot be found, the script returns you to the Setup dialog box.

4. The script opens the data file associated with the each active multiplexer channel.

5. The script obtains the use of the potentiostat and ECM8 multiplexer specified in the script or in the Setup dialog box. It initializes the multiplexer so that all the selected cells are shorted when inactive. If the potentiostat is in use or the ECM8 cannot be opened, the script returns you to the Setup dialog box.

6. If the elapsed time for this experiment is greater than the total experiment time, the script complains and returns to the Setup dialog box.

7. The script now switches the multiplexer to the first selected channel.

8. The script takes a current and voltage measurement on this cell. The system actually records a short current- and voltage-versus-time curve, and averages the results. At each point the voltage and current measurement ranges are automatically switched to the optimal ranges.

9. Steps 6 and 7 are now repeated for every other active channel.

10. When all the channels have been run, the script checks the repeat cycle time and delays if necessary. After this delay it repeats the cycle though the active channels starting with step 6.