USER MANUAL | ICOS | INSTRUCTIONS | UM/ICOS-EN REV. B.2
Optional External Throttle Valve
An optional external throttle valve (Figure 97) lets you adjust the gas flow to the analyzer.
Use the throttle valve to restrict the:
Total flow into the analyzer to less than 200 SCCM
Source gas to less than 180 SCCM for proper dynamic dilution control
The flow rate can be measured at the inlet if necessary.
Figure 97: External Throttle Valve
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