FID Ignition problem

HI dheyaaldeen 

I had this problem when I was working with GC2014  SHimadzu  and my advisoer said that this problems 

because of some Moisture on the FID Jet , especially in winter time

REAGARD 

Abtisam 

Hi Abtisam

thanks for your reply

Other GC have same a problem to day  it was found that there was water collected at the FID collector.

because high Humidity on lab.    

Reagards

Dheya

If the FID is hot this shouldn't be an issue. The 6890 and later models do not allow FID ignition below 150c. The flame does produce moisture due to the burning of hydrogen and oxygen and this produces some moisture that is released as vapor but will never stick in the collector due to the temperature. The only was I could see this happening is if you have wet carrier gas and the detector is cool and the flame is not lit. Even with wet gas I hesitate to think that a 1 to 2 ml/min would allow any moisture to collect.

Regards

James 

Tip for other users that may encounter an FID Ignition problem: try blowing on the FID when it is trying to light.  If the FID lights - there is an issue with the gas flows. It is best to use a flow meter like the ADM Flow Meter for gas chromatography to verify the gas flow rates.

For more information, check out this article in the Knowledge Portal: Troubleshooting an FID not Igniting