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- Posts: 7
- Joined: Fri Mar 24, 2017 1:27 am
I´ve already changed the jet just in case, checked the H2 cylinder, changed for a new one, even changed the bead.
When I begin the conditioning of both detectors ( It´s a 6890 GC with uECD and NPD with a bifurcation before both detectors) the uECD shows no issues and the NPD starts to gain temperature and both the air flow set to 60 ml/min and the H2 set to 3 ml/min get to it. When the temperature of the NPD reaches 300 give or take the H2 begins to drop slowly, and show the message above.
Any ideas ????
https://imgur.com/Y00G52h
https://i.imgur.com/Y00G52h.jpg