Recently I came across some non-contact liquid level sensors and gathered them out of curiosity. They have been available in the market for the past few years, but this time I was lucky enough to get ...

Researchers have designed a new kind of sensor 1 that can detect minute traces of para-nitrophenol (PNP), a water pollutant. This sensor will be very useful for monitoring the extremely low levels of ...

The shielded 8mm sensors are flush-mountable and feature a 2mm sensing range. Available with either M8 or M12 quick disconnects, they are equipped with LED status indicators visible at wide angles, ...

Matching a sensor interface with a programmable logic converter or controller hardware that can accept only one type of input—npn or pnp—can be difficult. The last-stage modification circuit described ...