The 9000 sonar ranging module from SensComp Inc., Livonia, MI, lets you interface piezo ultrasonic transducers with your external circuitry or controller. The module operates on 5 VDC and provides a TTL pulse-width output proportional to distance to target. As a matched component pair, the company's 9000 transducer and ranging module can detect objects or liquid surfaces from 1–18 ft. Applications include liquid level sensing in tanks, anti-collision sensing for AGVs, and proximity detection.
Sonar Ranging Module from SensComp