ABB PGC5007 - Signal Offset (FPD); Signal Random Baseline Noise (FPD)

PGC5007
PGC5007 Operating Instructions 4 Maintenance information
14 OI/PGC5007-EN, Rev C
SIGNAL
OFFSET (FPD)
Incorrect Temperatures
Electronics Failure
Replace FPD Amplifier
Assembly
The baseline is continually offset to the
positive or negative beyond the background
offset that is normal to the FPD detector.
Column Flooded
Detector Adjustment
Sample Valve Leak
Electrical Noise
Noisy Power
Supply
Faulty FPD
Amplifier
Loose
Connections
Faulty
Coaxial Cable
Replace Power
Supply
Replace FPD
Amplifier Assembly
Tighten cable
connections
Gas/Fuel Contamination
SIGNAL RANDOM
BASELINE
NOISE (FPD)
Contaminated
Regulator
Water in
FPD Vent
Hydrocarbon
Contaminates
The baseline is characterized by random
noise and/or spikes.
Contaminated
Tubing
Replace
Coaxial Cable
Sulfur Addition Module
Leaking or Empty