The LI40 PodView digital level indicator is a low cost ($181) general purpose indicator that displays engineering units for level or volume when combined with all EchoPod level sensors compatible with ...

Two 4-to-20-mA loops for analog indication of level, interface, and temperature lets the sensor indicate and display two measurement variables simultaneously.

I've just come across a no-name non-contact, high-precision 80 GHz mmWave radar sensor for liquid level detection with a 40m ...