Principle
of Operation
An acoustic pulse is transmitted from the SmartSonics
sensor face. The pulse travels to the surface
being monitored and is reflected off this surface
back to the sensor face. The time of flight is
divided by 2 and converted to an output signal
directly proportional to the material level. The
transmitter can be programmed to simply send a
4-20 mA analog output signal directly to an existing
control system or send data to a PC running a
SmartSonic's calibration/data logging program
using RS-485 communications.

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