By Anonymous on Friday, May 21, 2004 - 12:03 am:
I'm using an Agilent GC 6890 and I've been getting this error msg: "inlet pressure too high" and it will lead to automatic shut down of the whole GC system.
I have tried to lower down the ramming-up temperature from 230 deg.C to 200 deg.C and from 4 mins down to 3 mins. I've been told to also shut down the "gas-saver" feature. The column I'm using can withstand up to 300 deg.C and the oven setting at max. is at 300 deg.C.
Have I ram up the GC to a temperature too high?
By Ingo Christ on Friday, May 21, 2004 - 06:57 am:
You tank pressure is not high enough. Increase it or change to constant pressure mode and it will work.
By Anonymous on Friday, May 21, 2004 - 08:03 pm:
your split value is dirty clean it / or your inlet pressure is to high(total flow)
By Anonymous on Saturday, May 22, 2004 - 11:26 am:
What is your column head pressure,and the column parameters?
By Anonymous on Saturday, May 22, 2004 - 05:58 pm:
Thanks anonymous. I've had my split valve cleaned and septum changed. It is much better.