GE Analytical Instruments ©2009 120 of 236 DLM 90488-01 Rev. A
The IOS System
The Integrated On-Line Sampling (IOS) System (see Figure 20) provides a convenient sample inlet for
on-line sample sources and standards in 40 mL vials. When the IOS System is being used, the
stainless steel tubing must connect the IOS System to the Sample Inlet port.
When the Analyzer is configured in an on-line configuration, you do not need to change the
configuration to analyze a standard with the IOS System. Simply stop analysis, slide the IOS System
door open, wait 30 seconds for sample to drain from the IOS System, and then insert the 40-mL vial
containing the standard.
After water flow to the IOS System has been established, the flow rate should be adjusted so that
flow out of the waste line is between 30 - 300 mL/min. The flow rate is controlled by a needle valve,
which is adjusted by the screw on the IOS. Turn the screw clockwise to decrease flow, and turn the
screw counter-clockwise to increase flow.
Figure 20: The IOS System
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