Analysis Subsystem 3Flex Service Manual
2-8 Aug 2013
Analysis Subsystem
The analysis subsystem includes the analysis manifold, the sample ports, the P
0
port, and the vacuum
gauge. All, except the vacuum gauge, are located in the heated, insulated portion of the upper cabinet
and mounted on a 1 and 1/4-in. aluminum plate. The vacuum gauge is located below the plate in the
unheated portion of the cabinet (see Vacuum Gauge
on page 2-11). Pneumatically actuated, hard-seal
valves and VCR connections are used to provide enhanced vacuum integrity.
There are four RTDs located in the analysis subsystem:
• Ambient temperature RTD: stainless steel, located outside the cabinet to the right and 1 inch
forward of the right front panel
• Dosing Manifold Temperature RTD: in a centrally located block connected to the analysis
manifold plumbing
• Port RTD: located in the sample port mounting block on the top of the base plate
• Heater RTD: attached to the resistive heater element
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