PCB Piezotronics has announced that its 686B01 series vibration switch has been ATEX approved for use in hazardous environments.

The EX686B01 is well suited for 24/7 continuous protection of cooling tower fans and gearboxes, fin fans, motors and pumps, HVAC systems, wind turbines and other critical machinery operated in hazardous areas. Meeting ATEX Ex nL IIC T3 approval requirements for use in hazardous environments, the EX686B01 is hermetically sealed and mounts with a single stud.

This smart vibration switch includes an embedded piezoelectric accelerometer for accurate measurement and monitors vibration velocity for more consistent results. The EX686B01 also offers a remote reset capability and USB programmable alarm threshold and time delays to avoid false trips.

The EX686B01 is fully user programmable via USB and is a drop-in replacement for most popular mechanical vibration switches as it only requires two wires and can replace legacy switches without additional cable runs. As it requires only single relay operation, the EX686B01 is also a lower cost alternative for many electronic vibration switch applications.