ultrasonic level sensor / for liquids / non-contact

The Echotel? Model 300/301 is a full-featured, powerful ultrasonic transmitter for measurement of liquid level, volume, or open-channel flow. Explosion proof approvals are standard for both the transmitter and transducer.

Operating Principle

The Model 300/301 is a versatile system that utilizes non-contact ultrasonic technology to measure liquid levels in a variety of applications. The system consists of a transmitter and an ultrasonic transducer. The transducer contains a piezoelectric crystal that has the ability to convert electrical signals generated by the transmitter into ultrasonic pulses.

The unit operates by directing ultrasonic pulses, or sound waves, through the air toward the liquid surface.

They are then reflected off the liquid surface as an echo, and returned to the transducer. The piezoelectric crystal then converts the returned echo into an electrical signal which is analyzed by the transmitter. The elapsed time between the generation of the ultrasonic pulse and the return echo is proportional to the distance between the face of the transducer and the liquid surface.

Applications

Water and wastewater
Slurries
Viscous fluids
OIls
Acids
Caustics