I use a multimeter from Radioshack (catalog number 22-812) that can
record this data on a PC via a serial connection. Presumably by now
there is a similar device with a USB connection. Publishing the
resulting text file on the web would be effortless on a *nix
machine, but I'm not sure how to do
hi ...
there is very likely a correlation between quality of the vacuum and
filament lifetime.
it had been recommended to us to monitor the vacuum continuously on the
rigaku ru300 (?) generators we had at the time. this was fairly easy by
just plugging a left over plotter from an old chromatograp
Dear Pat and friends,
Our lab has a ultraX18 5.4kw x-ray generator, and the lifetime of the
filament is more than 1000 hours before rigaku recalled and changed the
vacuum pump. I noticed that the lifetime is really related with the the
vacuum. Ideally it is below 0.1mpa and the lifetime can be lon
Dear Pat,
I too am shocked by the extra-long lifetimes the current batch of MM
filaments have. I've had filaments in both our instruments (a M007 and
an M007 hf) since August and they are still going strong.
Not long ago I would replace a filament before it blew if I knew there
was an importan
Dear Colleagues,
During more than three years of operation, I have recorded considerable
difference in filament lifetimes on my Micromax007: roughly in the range
500-2000hrs. Some of this may be accounted for by poor manufacture and Rigaku
have, in the past, noticed this problem and replaced so
