--- In VacuumX@..., Gomez <gomez@o...> wrote:
On Thursday, October 30, 2003, at 05:13 AM, nano_tronics wrote:
ok now i understand , i tought that to have an UVH in a closed
seal
container it was needed to be pumped as long as it need to be
substained because of constant outgasing of container material
Obviously not, (if everything is done right) since things like
high
vacuum
capacitors and other ultra high vacuum devices work fine for
decades
without
so much as a getter. The tricks are getting everything clean
enough,
using
the right materials, bake-out, and so on.
i understand that the getter play a big roles in stabilyzing the
vacuum
if every proceding step is taken care of for reaching the UVH
barrier
and torr can be translate to hg/mm
Yes. 1000 Torr = 1000 mm/Hg @ 0C. 760 Torr = 1 atmosphere
(standard)
i ask this question because it
gets confusing when looking for spec for VD pumps many of them
are in
mbar some in pascal and other in torr i prefer to work with torr
too
it is less confusing
There are many handy software utilities for most operating
systems
which
will convert any unit of measure into any other (within a
measurement
regime,
such as pressure). In MacOS, I use a tool called
simply, "Convert" -
very
handy, and worth every bit of the $15 shareware fee.
thank you so much for answering my question now i know what can be
done and what cant, it is much clearer for me now :)
and dont worry when ill be able to get all my vacuum pump stuff ill
let you know for sure :)
