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flame problem

clem.lema

Hello,

The flame goes out as soon as the detector stabilizes at 2 pA, and it turns on again and then re-opens with my GC8860. I think the problem comes from the LIT offset  value, however impossible to change this value with my interface. I have to choose [Settings]> [Configuration]> [Detector] but I don't have the [Configuration] tab (from the device's IP address).

Thanks for your help

CL

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  • 0

    Hi,

    Can you share flow of air, makeup and hydrogen?

    Generally it is keep 2pA in lit offset in software..You can see this in software under detector in method.

    Try ignite FID by keeping make up off and then let it stablize.after 5 minute you can turn on ur makeup flow.

    Generally hydrogrn and air flow keeps in 1:10 ratio, like 30 hydrogen then 300 air.

    And last Need to check quality of Air means moisture etc.

    If using Air cylinder then change and then check..

Reply
  • 0

    Hi,

    Can you share flow of air, makeup and hydrogen?

    Generally it is keep 2pA in lit offset in software..You can see this in software under detector in method.

    Try ignite FID by keeping make up off and then let it stablize.after 5 minute you can turn on ur makeup flow.

    Generally hydrogrn and air flow keeps in 1:10 ratio, like 30 hydrogen then 300 air.

    And last Need to check quality of Air means moisture etc.

    If using Air cylinder then change and then check..

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