Waters Alliance e2695 - Sample Management System Overview; Flow Path

Sample management system overview
July 29, 2013, 715003794 Rev. B 31
Sample management system overview
The sample management system holds and positions the sample vials and
injects the samples into the solvent flow. The system’s five carousels hold as
many as 24 sample vials for a total of 120 vials. The vials are
industry-standard, 2-mL vials with snap-on, crimp-on, or screw-on caps. A
carrier rotates the carousels to the injection station in the sample
compartment.
Flow path
Four valves in the sample management system control the flow of solvent,
sample, and needle wash solvent. These valves, designated V1 through V4,
are shown in the following figure. You can monitor the position of each valve
in the Status screen. (See the figure “Second page of the Status screen:” on
page 120.)
Flow path through the sample management system:
The flow path through the sample management system changes according to
the function being performed.
Atmosphere
Needle
Wash
valve
(V4)
Waste
Inlet from
solvent
management
System
Waste
valve
(V3)
Syringe
valve (V2)
Sample loop pressure
transducer
Sample loop
Needle in
seal pack
Needle wash
outlet
Outlet to
column
Needle wash
reservoir
Needle
wash
pump
Restrictor
Syringe
Sample inlet
valve (V1)
Sample vial