Electrode degradation
Accumulation of solid mineral deposits at the permeable junction of a reference electrode restricts ion transfer between the internal electrolyte and the external sample solution. Salt bridge fouling disrupts the stable potential of reference electrodes used during aqueous dyeing or finishing process monitoring. This blockage induces significant voltage drift and measurement error in pH sensors.
High concentrations of calcium salts or organic dispersants within the dyebath contribute to this rapid precipitate formation at the ceramic frit.
Transmission blockage
Physical occlusion of the porous membrane prevents the establishment of a steady reference potential. When ionic flow stops, the electrochemical circuit effectively opens, causing the transducer to report erratic data regardless of the actual bath concentration. Regular maintenance of the junction preserves the sensitivity required for precise chemical dosing in continuous finishing ranges.
Corrective maintenance
Mechanical abrasion or ultrasonic cleaning of the porous glass tip removes surface layers that cause impedance increase. Technicians evaluate the electrical resistance across the junction to determine whether the component functions within specifications or requires immediate replacement.
Measurement impact
Unreliable sensor readings lead to incorrect acid or alkali adjustments during textile processing cycles. Faulty reference potentials often drive excessive chemical consumption while producing non-uniform shade results on synthetic fabrics. Accurate monitoring depends upon maintaining an unobstructed ionic path between the electrode and the process stream.
