e-Vision and e-Vision+ LP101013.100 – 01 January 2004
MKS Instruments, Spectra Products
19
4.5 Mounting the analyser
The standard 2 ¾ " Conflat® flange on the analyser can be sealed to the vacuum
chamber with either a copper gasket, or a Viton® gasket with a square cross
section. Which one you choose depends on the ultimate pressure you expect in
your system and whether you intend to bake the system.
If it is not already clean then clean the gasket with suitable solvent and dry it.
Remove the analyser from its shipping envelope, slip the gasket over the
quadrupole structure and set it in the grooves of the flange surface.
Carefully insert the analyser into the vacuum chamber ensuring that you do not
allow the leads to touch the walls of the vacuum chamber. Make sure the gasket
does not slip part way out of its slot as you push the two flanges together.
Rotate the flange until the locating key on the feedthrough housing tube is as close
to 11 o'clock as the bolt holes will allow. This will ensure that the e-Vision
is in its
preferred position, although it can be mounted in any orientation.
Bolt the feedthrough flange to the vacuum chamber flange using the torque
appropriate for the gasket material used.
Do not discard the plastic shipping envelope or the two-piece foam
packing surrounding it.
If in the future you need to return the analyser for service, it should
returned in its original packaging to avoid expensive damage.
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