Hello, FID Signal output is showing 576675 in 7890b gc..Even after removing FID Block assy, same signal is showing..It is not zeroing...What could be reason of this problem?
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Hello, FID Signal output is showing 576675 in 7890b gc..Even after removing FID Block assy, same signal is showing..It is not zeroing...What could be reason of this problem?
Hi
Another reason for this problem could be because the detector temperature was too low and water condensed inside the detector and shorted it. You should clean the detector and checking for the presence of water. This water comes from condensation from the hydrogen flame in FID.
Regards
Dheya
Thank you for reply...May i know that electrometer of 6890N and 7890B is same or not...
Thank you for reply...May i know that electrometer of 6890N and 7890B is same or not...
OR FID signal interconnect assembly of 6890n and 7890b is same or not...
7890B
FID electrometer G3431-61815
6890N
FID signal board G1531-60010
electrometer of 6890N and 7890B is not same
Problem solved after changing interconnect spring of electrometer. Thank you PWD, Dheyaaldeen and Krishna for advice and comments.
Did you change the full interconnect spring assembly or just the spring at the interconnect spring rod?
Thank you in advance!
BR
Lars
Hi
Interconnect spring replaced and problem solved.
In picture, you can see.Remove spring with rod and install new interconnect spring rod in electrometer...