Set pressure drift can occur due to several reasons:
Material Fatigue: Components of the catalytic system, such as seals and pressure regulators, may degrade over time. Thermal Effects: Repeated heating and cooling cycles can cause expansion and contraction of materials, altering pressure settings. Mechanical Wear: Moving parts within the system can wear out, leading to changes in pressure settings. External Vibrations: External mechanical vibrations can cause components to shift, resulting in drift.