A data integrity module and method for evaluating data in a process information database. The control unit makes the motor winding and the resistive element form a loop circuit when a voltage between the first power supply terminal and the second power supply terminal exceeds a predetermined value. In addition to the foregoing, other aspects are described in the claims, description, and drawings that form this document. A breakaway pull tab having an inner surface with U-shaped ribs, the combination of the surface and ribs being such as to provide a concavity which assists in gripping the tab to pull the strip away.