USER MANUAL | ICOS | INSTRUCTIONS | UM/ICOS-EN REV. B.2
Appendix G: Fast-Flow Operation for the
GLA351-N2OCM and GLA351-N2OM1
Analyzers with the Fast-flow feature:
Measure data at a higher flow rate than a standard analyzer.
Use an external pump to increase the flow rate of gas during measurement.
Use a throttle valve to adjust the pressure inside the analyzer.
Figure 100 shows a plumbing diagram of an analyzer with the Fast-Flow option.
Figure 100: Plumbing Diagram for Fast-flow Mode
During high-flow mode, the External Pump is on and the Internal Pump is off. The high flow
solenoid valve opens, and the inlet gas flows through both of the inlet paths. The External
Throttle Valve (Figure 101) is used in conjunction with the electronic pressure controller to
adjust the flow through the analyzer.