ECHO'S newest product THE AIR TRANSDUCER is a smart ultrasonic level transmitter. It has 5 modes of operation: level, distance, OCM flow, volume and pump control. It comes in 2 models, 3m (10 ft) and 10m (33 ft) ranges with 2 SPDT relays, 2 Modbus RTU RS-485 terminals and 1 4-20mA output.
Applications include liquid and solid level measurement up to 33 ft in range. It will measure level, distance, volume and Open Channel flow. It has 2 relays for alarm and pump control.