//bat.bing.com/action/0?ti=5562332&Ver=2 Ultrasonic and Radar Level Sensor Information

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Ultrasonic and Radar Level Sensor Information

Operation of Non-Contact Level Sensors

R-NC-operation

A pulse is emitted from the non-contact level sensor's transmitter. The pulse travels to the surface being monitored and is reflected off the surface, back to the sensor. The time of flight is divided by 2 and converted to an output signal directly proportional to the material level. In the case of the ultrasonic sensor, temperature is measured to compensate for the speed variation of the ultrasonic pulse