The OPW model 8030 Ground Verification Monitor is compatible with today's transport ground systems. The monitor has a 5 amperage, 240 volt relay output for control of terminal automation systems (TAS) or pump control devices when used as a stand-alone system. The monitor is equipped to provide a permissive signal to allow load rack operation and, if ground is lost, to indicate a non-permissive signal and shut down the loading operation.