American Automated ultrasonic level sensors
The Sonix-40 and 50 ultrasonic level transmitters continuously monitor level and provide a 4-20mA current proportional to the level. They do not contact the liquid. The current output can be connected to programmable controllers, remote displays, computers, chart recorders, etc. Features include non-contact sensing, no maintenance, switch calibration, easy installation, temperature compensation, and automatic adjustment of beam width and gain.