A plumbing part in the form of a water delivery device is comprised of a protective liner through which potable water can flow. The configuration database further indicates an association between the Dial instance and the hardware latch. The stator includes an internal cavity having one or more lobes. Degradation of the NOx concentration signal is determined when the first output signal has degraded. The extent to which the auxiliary data is detected forms a detection metric used in combination with one or more other metrics to differentiate copies from originals.