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Functional Description
MS Detector
Thermo Scientific
Surveyor MSQ Plus Hardware Manual
19
MS Detector
The MS detector provides sample ionization and mass analysis of samples injected with an
autosampler or samples infused with the reference inlet system. The Surveyor MSQ Plus MS
detector uses a quadrupole mass analyzer with an API source external to the mass analyzer.
The following components of the Surveyor MSQ Plus MS detector are described in this
section:
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•
Rear Panel Controls and Connections
•
Connection Between LC and MS Detector
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Front Panel Status Indicator
One light-emitting diode (LED) is located at the upper right corner of the front panel of the
Surveyor MSQ Plus MS detector as shown in
.
lists the states of the
Status LED.
Initially, when a Thermo Fisher Scientific service engineer installs the Surveyor MSQ Plus MS
detector turns on the forepump, the status LED is red. As the system pumps down, the LED
flashes yellow. After the vacuum reaches 10
-4
Torr and the turbomolecular pump reaches its
operating speed, the LED turns solid yellow.
If you vent the system for a brief period of less than 2 hour (for example to perform
maintenance on the source block), wait 15 minutes after pumping down the system to place
the MS detector in the Operate mode. If the system has been in a vented state for more than a
brief period, pump the system down, and then wait a minimum of 8 hours before operating
the system.