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- Posts: 25
- Joined: Mon Dec 12, 2016 7:24 am
The carrier supply is fine and I am able to flow helium without a problem to the FID for the makeup flow. I have changed out the septum and checked extensively for leaks and found nothing. I swapped out the EPC (per Agilent's recommendation) and still have the exact same problem.
The weird thing is that the pressure is never able to get anywhere near the setpoint (it remains under 0.5psi) but sometimes when we set the flow it increases to the setpoint and holds for about a minute before going back down to a low flow.
Any recommendations would be greatly appreciated! I have never encountered as GC problem as mysterious as this one