User name R. Michaels
Log entry time 02:32:34 on May 4,2002
Entry number 2531
keyword=VDC efficiency dropping 3% per day ?I am concerned that maybe the VDC efficiencies are slowly dropping.
Comparing a run tonight (fig 1) with one from last night (fig 2), there
is a degradation of at least 3%. These were runs 1210 and 1171. I checked
some other runs too. Both spectrometers appear to be dropping. Now, I
realize there could be lots of false reasons for this, so maybe I am fooling
myself, but I think it is worth watching. Is there a gas problem ?
FIGURE 1
FIGURE 2
