This Information Applies To: Agilent GC/MSD systems with EI sources controlled by OpenLab CDS software
Switching filaments in the GC/MSD if a filament is burnt out or similar issue.
In Electron Ionization (EI) sources, filaments provide a stream of electrons that ionize compounds as they enter the source. Filaments are consumable items, so Agilent Electron Ionization (EI) sources have a second spare filament that the user can switch to via software without having to vent and open the analyzer chamber.
Steps to Follow
Tips: To perform this procedure from the instrument status dashboard, the instrument must not be locked for tune control.
Caution: For optimum instrument performance, Agilent recommends always running an autotune after switching filaments. Running an autotune also ensures that a complete PDF tune report will accompany subsequent data acquisition files instead of a report that only shows the tune parameters.
Tips: Once saved, all methods that use this tune file will now use the working filament. If other methods specify different tune files that still use the bad filament, those tune files must also be updated to use the correct filament, as described above.
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