MKS Instruments UK Ltd
Microvision2 Hardware Manual – SP101015.102 August 2010
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5.5 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 9 o'clock as the bolt
holes will allow. This will ensure that the Microvision2 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 be returned in its original packaging to
avoid expensive damage.