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Removing the FID detector from methods and conserving helium.

snorman

We are going to shut the FID off on all of our 5975/6890 GCMS. Is there a way to remove the FID as a detector in the methods?  We have attempted to set everything to zero, but the method requires some flow.  We are hoping to conserve as much helium as possible.

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  • +1

    Hello, all you need to do in the method is to uncheck each of the FID flows, and uncheck the electrometer and uncheck the Flame on.  With everything unchecked for the FID settings the software will ignore your FID.  Under the Signals section you will also want to uncheck Saving the FID signal.

    Setting flows to zero did not work because the GC was trying to maintain a flow rate specified in the method, in this case zero flow.  The system isn't designed to control zero flow, instead we just need to turn them off by unchecking them.

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  • +1

    Hello, all you need to do in the method is to uncheck each of the FID flows, and uncheck the electrometer and uncheck the Flame on.  With everything unchecked for the FID settings the software will ignore your FID.  Under the Signals section you will also want to uncheck Saving the FID signal.

    Setting flows to zero did not work because the GC was trying to maintain a flow rate specified in the method, in this case zero flow.  The system isn't designed to control zero flow, instead we just need to turn them off by unchecking them.

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