Functional Description
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__________________________________________________________________ Syringe Pump
_______________________ Finnigan LTQ Hardware Manual ______________________
2-5
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2.3 Syringe Pump
The LTQ includes an electronically-controlled, integrated, syringe pump. The
syringe pump delivers sample solution from the syringe into the API source.
See Figure 2-2. When the syringe pump is operating, a motor drives a pusher
block that depresses the plunger of the syringe at a rate of 1% of the syringe
volume per minute. Liquid flows out of the syringe needle and into the sample
transfer line as the plunger is depressed. The syringe is held in place by a
syringe holder. Refer to Finnigan LTQ Getting Started for instructions on
setting up the syringe pump.
You can start and stop the syringe pump from the Syringe Pump dialog box,
which can be reached from the Tune Plus window (which is available by
choosing Start > Programs > Xcalibur > LTQ Tune). You can also
specify the Purge mode, in which the flow rate is 5% of the syringe volume
per minute. Refer to the Xcalibur online Help for instructions on operating the
syringe pump from the data system.
The syringe pump LED is illuminated green whenever the syringe pump is
pumping. The LED is off if the syringe pump is at the end of its travel.
Figure 2-2. Syringe pump
LC Union
Needle Syringe
Syringe Holder
Pusher Block
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