Recycle Valve; Insulated Sample Inlet Tubing - Waters ACQUITY Refractive Index Detector Overview And Maintenance Manual

withstand, thus protecting the flow cell from exceeding the maximum
pressure rating. The pressure rating of the relief valve is 206.8 kPa (2 bar, 30
psi).
During purging, fluid moving through the sample and reference sides of the
flow cell exits through the pressure relief valve and then to the waste
reservoir. The figures on
and sample in the detector during normal operation and during a purge,
respectively. The following table provides the inner diameters of the sample
and fluid lines.
Fluid line diameters:
Fluid line
Sample in
Sample out
Reference in
Reference out
Recycle in
Recycle out

Recycle valve

During normal operation, the recycle valve remains closed. It opens only when
you specify recycling from the console, control panel, or by running a method
with the recycle valve parameter or timed events enabled. A closed valve
diverts solvent to the second port, to which you can plumb fluid lines and thus
return mobile phase to the main solvent reservoir during equilibration.

Insulated sample inlet tubing

To ensure good thermal isolation, and reduce baseline instability, use
insulated tubing to connect the temperature-controlled column to the
detector's sample inlet.
The sample inlet tubing provided in the startup kit has Teflon
Note:
insulation.
page 26 and page 28
Inner diameter (inches)
0.005
0.040
0.020
0.020
0.040
0.040
October 13, 2014, 715003547 Rev. C
indicate the paths of solvent
Features
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