fpd vs fid

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fpd vs fid

: junior.analyzer

: Posts: 10; Joined: Wed Oct 13, 2010 3:17 pm

by junior.analyzer » Tue Apr 19, 2011 10:33 am

i have siemens maxum gc

why the fpd is very hard to ignite comapare to fid?

Enthusiastic

Re: fpd vs fid

: DSP007

: Posts: 325; Joined: Fri Apr 08, 2011 6:15 am

by DSP007 » Tue Apr 19, 2011 12:40 pm

Because he has another job ratio of hydrogen and air, not equimolar 1 to 10, but about 1 to 1, to enhance the light emission of carbon (soot) , phosphorous oxide and sulfur oxide.

Re: fpd vs fid

: Peter Apps

: Posts: 5433; Joined: Thu Oct 13, 2005 2:29 pm

by Peter Apps » Tue Apr 19, 2011 1:40 pm

If all your flame gasses are at the correct flows (as given in the instrument manual) then the FPD should light as easily as an FID, but an FPD's detection performance is much more sensitive to small changes in gas flow than an FID's.

Peter

Peter Apps

Re: fpd vs fid

: junior.analyzer

: Posts: 10; Joined: Wed Oct 13, 2010 3:17 pm

by junior.analyzer » Wed Apr 20, 2011 9:37 am

DSP007 and Peter Apps Thanks guys!

Enthusiastic

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