high pressure differential capability, and long life integrity. Fitted with the electronic actuator and integrated temperature sensor, the system delivers high performance stand-alone closed ...

He built this set of no-contact limit switches using a hall effect sensor. The small black package sticking out past the end of the protoboard is the sensor. It is used to detect a magnetic field.

Description: The Pointek ULS200 uses an ultrasonic non-contacting switch to detect solids, liquids, and slurries. Particularly adept at measuring sticky materials, it’s usable across many industries.