Fluid Path Components; Flow Path - Waters ACQUITY Refractive Index Detector Overview And Maintenance Manual

Detector features: (Continued)
Feature
Relief valve

Fluid path components

The fluid path of the ACQUITY refractive index detector includes these
components:
• Countercurrent heat exchanger
• End-cap heat exchanger
• Flow cell, with sample and reference sides
• Purge valve
• Pressure relief valve
• Recycle valve
• Inlet and outlet tubing

Flow path

During an analysis, solvent flows as indicated in the following sequence:
1. Enters through the inlet tubing port.
2. Passes through the inlet tube of the countercurrent heat exchanger.
3. Flows through the end-cap heat exchanger.
4. Flows through the sample side of the flow cell.
5. Exits though the outlet tube of the countercurrent heat exchanger.
6. Passes through the purge valve (and, optionally, the recycle valve) to the
waste tubing.
Description
Prevents overpressuring the flow cell and,
consequently, possible flow cell damage.
October 13, 2014, 715003547 Rev. C
Features
25