It may be that the detector is installed correctly, but one or more of the
connecting wires could be touching the side of the chamber, causing a
short. I had this problem when I last replaced my PQExcell detector. Just
remove the detector assembly and make sure those wires are only as long as
necessary. Hope this helps.
James W. Fuhs
Microcoating Technologies, Inc.
5315 Peachtree Industrial Blvd.
Atlanta, GA 30341
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From: Lev, Steven [mailto:[log in to unmask]]
Sent: Monday, April 07, 2003 9:35 AM
To: [log in to unmask]
Subject: New Detector Problems...
List: We have a PQExcell and just meticulously installed the first
replacement detector. Visually all seems correct and we have a good vacuum
but, we are getting no indication of a signal at all. We are not just
getting background or even zeroes but a blank under our ICPS column in our
tuning panel and in other locations where we can monitor a signal. We are
reasonably confident that the detector has been installed correctly but we
are obviously experiencing a serious problem. Any suggestions especially
from other PQExcell labs would be appreciated.
Thanks in advance
Steven M. Lev, Ph.D.
Dept. of Physics, Astronomy, and Geosciences