To monitor the level of soap in a reservoir in a car wash
The WORLD-BEAM QS18U ultrasonic sensor monitors the level of soap in a tank in a car wash. The sensor is mounted atop the reservoir, aiming through the transparent top. The sound waves bounce off the surface of the liquid.
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WORLD-BEAM QS18 Ultrasonic Sensors |
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Low-cost ultrasonic sensor in popular WORLD-BEAM housing |
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