An important production line has vibration monitoring sensors at various points. When vibration exceeds the preset limit, the monitoring system sends a text message to the area’s maintenance supervisor. Yet when he sends a technician out to investigate with a handheld vibration tester, nobody has ever found anything wrong.
Electrical Troubleshooting Quiz - March 7, 2017
A mechanical alteration or a time-delay in the monitor should end the “ghost” alarms.