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1.7
Sample inlet
Either of two methods delivers solvent and sample to the installed probe:
•
An LC system (ACQUITY UPLC IVD or ACQUITY UPLC I-Class IVD), which delivers the
eluent from an LC analysis.
•
IntelliStart fluidics system, which uses onboard solutions to automate instrument
optimization delivering onboard solutions by direct or combined infusion.
1.8
Leak sensors
Leak sensors in the Xevo TQD IVD, and in the drip trays of the ACQUITY UPLC IVD system and
the ACQUITY UPLC I-Class IVD system, continuously monitor system components for leaks. A
leak sensor stops system flow when its optical sensor detects about 1.5 mL of accumulated,
leaked liquid in its surrounding reservoir. At the same time, the ACQUITY UPLC Console displays
an error message alerting you that a leak has developed.
See Waters ACQUITY UPLC Leak Sensor Maintenance Instructions, available on the Waters Web
site's Support page, for complete details.
1.9
Vacuum system
An external roughing pump and an internal split-flow turbomolecular pump combine to create the
source vacuum. The turbomolecular pump evacuates the analyzer and ion transfer region.
Vacuum leaks and electrical or vacuum pump failures cause vacuum loss, the damage from which
is prevented by protective interlocks. The system monitors turbomolecular pump speed and
continuously measures vacuum pressure with a built-in Pirani gauge. The gauge also serves as a
switch, stopping operation when it senses vacuum loss.
A vacuum isolation valve isolates the source from the analyzer region, allowing routine source
maintenance without venting.
September 7, 2016, 715003560IVD Rev. C
Page 29
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