Hello everyone
Does anybody help with ion gauge pressure fluctuations?
I am using GC 5890 and HP 5972A with the foreline pressure reading 37 mtorr with the column flow 1.32 ml/min and He gas flow at 55 psi. Ion gauge pressure showing fluctuation between 2.1*10-5 to 2.4*10-5.
Can anybody suggest the reason of the fluctuation in the pressure?
Thank you.
