What You Must Know About Ultrasonic Level Sensors?
Pulses of high-frequency ultrasonic sound waves are used by an ultrasonic sensor to determine how far apart two substances are. Like radar systems, ultrasonic sensors operate by converting electrical energy into sound waves, but they can also do the opposite, depending on the sensor as well as on the task at hand. What is an ultrasonic level sensor? Atop the tank, an ultrasonic level transmitter sends a pulse of ultrasonic energy into the liquid below. This ultrasonic pulse travels over the liquid surface and is reflected back at the sender. The distance to the liquid's surface can be determined by the transmitter measuring the time lag between the emitted and received echo signal and employing the appropriate formula. The formula for calculating distance is: Distance = (Speed of sound in air x time delay) / 2 The liquid level is determined by the transmitter's internal microprocessor once the bottom baseline of an application (often the bottom of the ta...