Abstract: A system for ascertaining operational status of an electrically-actuated valve comprises a valve-diagnostic device, which comprises: a mechanical sensor for detecting movement of a movable part of the electrically-actuated valve relative to a stationary part and outputting a mechanical sensor signal; and an electrical sensor for detecting an electrical characteristic associated with the operation of the electrically-actuated valve and outputting an electrical sensor signal. The system also comprises a data analyzer connected to the valve-diagnostic device to receive the mechanical sensor signal and the electrical sensor signal, and configured to display a corresponding output.