The sensors mount to the outside of containers and use a simple teach button to program empty and full conditions for detecting liquids through metal containers. The sensors generate a high-frequency ultrasonic pulse that goes through the container wall. The T50 sensor has a 316L stainless-steel housing with a sanitary connection. The M30 housing is a standard 30-mm barrel that mounts using a welding adapter or a metal strap kit.

Turck Inc., 3000 Campus Dr., Plymouth, MN 55441, (800) 544-7769,