ABB FEX300 - Limit Values for the Electrode Deposits; Limit Values for the Electrode Impedance; Recommended Settings for the Trend Logger

Extended diagnostic functions
136 FEX300, FEX500 OI/FEX300/FEX500-EN
8.3.2 Limit values for the electrode deposits
"Diagnostics / Diagnosis Control / Coating Detector" menu
• Deposits QE min alarm = 0.5 x deposit value QE
• Deposits QE max alarm = 2.0 x deposit value QE
Important (Notice)
The deposit value QE is the mean value of Startup Fingerprint QE1 and QE2. The value is
determined using the following formula:
QE = (Startup Fingerprint QE1 + Startup Fingerprint QE2) / 2
8.3.3 Limit values for the electrode impedance
"Diagnostics / Diagnosis Control / Cond. Detection" menu
The limit values "Elec. Imp Min Alarm" and "Elec. Imp Max Alarm" depend on the fluid
conductivity and must be determined on site.
8.3.4 Recommended settings for the Trend Logger
"Diagnostics / Trend" menu
• Cycle time = 43,200 minutes