Ultrasonic Level Transmitters allow simple and reliable non-contact level measurement of fluids in plastic, metal or concrete tanks, sumps or other containers. The microprocessor-controlled circuit generates a pulse that sends a sound wave from the transducer face down to the fluid level which is then reflected back. The transit time is measured and converted into a 4/20mA signal. Because the speed of sound changes with air temperature, each transducer has a built-in temperature sensor which compensates for air temperature inside the tank.

Ultrasonic units have a proprietary circuit that locks onto the echo farthest from the transducer face which will always be the fluid level. This circuitry automatically filters out false echoes that may be produced by peripheral obstructions inside tank. Each unit also features a self-cleaning face which eliminates condensation. All Babbitt ABM Series offer simple, single push-button calibration. These units can be calibrated either inside the vessel, on the bench or with the factory provided software