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Graphics Interchange Format  |  1996-01-05  |  91.3 KB  |  499x422  |  8-bit (140 colors)
   ocr: Telewintows Column diagnostics basedon pressure vanation: Faults: X Low sorbant porosity Run batch pressure bias -150.0 150.0 -3.0 Unmodeled Pressure (Based on sensor vaidation model) Varation Fuzzy Evidence Protcin Combination Column sorbent problem Rcsolution x2.0 1.00 Variation High pressure- 1035 unknown cause Hi Pressure D - - Plugged column inlet Pressure =A - Operator Query - A - 500 a Severe Hi Pressure Sensor biased high Bypass Column Stop Pump EMERGENCY SHUTDOWN Figure 9. Fuzzy logic network for root-cause diagnosis ofh high col- umn pressure.