Thermo Scientific
TSQ Altis, Quantis, and Fortis Hardware Manual
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Vacuum System
The TSQ Altis, TSQ Quantis, and TSQ Fortis MSs require either one or two external
forepumps, depending on the model. The forepumps create the vacuum necessary for the
to operate.
Vacuum Pumps
Forepump: Creates the vacuum necessary to properly operate the turbomolecular pump. It
also evacuates the ion transfer tube region of the vacuum manifold.
• The TSQ Fortis MS and the TSQ Quantis MS each need one external foreline
pump.
• The TSQ Altis MS needs two external forepumps.
Turbomolecular pump: Controls the vacuum for the vacuum regions. It also sends status
information, such as temperature or rotational speed, to the data system computer.