Thermo Scientific TSQ Quantum XLS, User Manual

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2
Functional Description
Mass Spectrometer
22 TSQ Quantum XLS Series User Guide Thermo Scientific
• Mass Analyzer
• Ion Detection System
• Vacuum System and Inlet Gasses Hardware
• Electronic Assemblies
• Data System
Controls and Indicators
Five light-emitting diodes (LEDs) are located in the upper right of the front panel of the mass
spectrometer. See
Figure 10 and Figure 11 .
The Power LED illuminates green whenever power is supplied to the vacuum system and
electronic assemblies of the mass spectrometer.
The Vacuum LED illuminates yellow when the turbomolecular pump is nearly at speed
(80 percent of its operating speed of 750 MHz), and it is safe to turn on the ion gauge. The
Vacuum LED is off if the turbomolecular pump is not at speed. The Vacuum LED
illuminates green whenever the pressure in the analyzer chamber, as measured by the ion
gauge, is at or below the value required to enable high voltages to the mass analyzer.
See
Table 2 .
Figure 10. Front panel LEDs of the TSQ Quantum XLS Ultra mass spectrometer
Figure 11. Front panel LEDs of the TSQ Quantum XLS mass spectrometer
Table 2. Maximum allowed pressure to turn on high voltages
Carrier gas Ar collision gas Maximum pressure (Torr)
He Off 8 × 10
–
6
He On 5 × 10
–
5
Power Vacuum Communication
System Scan
Communication Vacuum
Power
System
Scan