Thermo Scientific TSQ Quantum GC, User Manual

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2
Functional Description
Mass Spectrometer
22 TSQ Quantum XLS and TSQ Quantum GC User Guide Thermo Scientific
• Ion Detection System
• Vacuum System and Inlet Gasses Hardware
• Electronic Assemblies
• Data System
Controls and Indicators
Five light-emitting diodes (LEDs) are located at the upper right side of the front panel of the
mass spectrometer. See
Figure 9 .
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%
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 9. Front panel LEDs of the mass spectrometer
The Communication LED illuminates yellow when the mass spectrometer and the data
system are trying to establish a communication link. The Communication LED illuminates
green when the Ethernet communication link between the mass spectrometer and the data
system has been made.
Table 2. Maximum allowed pressure to turn on high voltages
Carrier gas Ar collision gas Maximum pressure (Torr)
He Off 6
×
10
-6
He On 5
×
10
-5
H
2
Off
5
×
10
-5
H
2
On 1
×
10
-4
Communication
Vacuum Power
System Scan