Endress+Hauser SpectraSensors SS2100i-1, Обзорное руководство

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SS2100i-1 and SS2100i-2 Analyzer
3
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10 4900002288 rev. B 1-13-21
Shutting Down the SCS
Situations may occur that require the shutdown of some or all of the SCS.
These circumstances may include short-term shutdown for repairs or parts
replacements, for example, or a long-term shutdown of the system for packing
and storing.
To isolate the measurement sample cell for short‐term shutdown
The analyzer can be isolated from the primary sample bypass section for short-
term shutdown or maintenance of the analyzer while allowing the sample
bypass flow to continue in a steady-state mode.
1. Close the sample flow meter control valve(s) (adjustment knob
turned clockwise) for the measurement channel. Do not over-tighten
the control valve(s) or damage could occur.
2. Close the cell supply and cell return shut-off valves. Refer to the
analyzer system drawings.
3. Allow any residual gas to flow out of the measurement cells.
The process sample at the sample tap is at a high pressure. A
pressure reducing regulator is located at the sample tap to reduce
the sample pressure and enable operation of the SCS at a low
pressure. Use extreme caution when operating the sample probe
isolation valve and field pressure reducing regulator.
All valves, regulators, switches, etc. should be operated in
accordance with site lock-out/tag-out procedures.
Due to the high pressure of the process sample, it is advisable to
allow the sample bypass flow to continue during short-term
isolation of the analyzer. Continuing sample bypass flow allows
the field pressure regulator to continue normal operation without
possible overpressure and activation of the relief valve in the
event the pressure regulator leaks when the downstream flow is
discontinued.
Never purge the analyzer with air or nitrogen while the system is
powered up.