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flame photometric detector has low signal

Question asked by stevenh12stevenh12 on Oct 14, 2020

I have a 6890N gc with 2 FPD detectors.  One detector has low sesitibity.  Maybe it needs a new O ring for the ignitor?

 

I checked the flows comming out of the derectors.  The make up gas was set to 60 but my flowmeter read 30.

I snooped around with a helium leak detector and found one of the detectors has a leak somewhere inside of it.

 

I swapped the 2 colums ( I use a 2 hole injection port ferrule) and got the same low results on my 2nd FPD so I  think my problem is with the detector.

Maybe I need to use different flow rates?

 

Thanks

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