The microprocessor based U44xx family of ultrasonic sensors offers simple local or remote programming via USB or RS-232 interface software. These sensors are designed for non-contact level, presence/absence, volume, proximity and distance measurements. The self-contained series is supplied with hassle-free set-up software and user-selectable options. The loop-powered U4467 series is designed for measuring volume and open-channel flow of liquids. These low-powered sensors are suitable for hazardous locations when used with an approved barrier, and an optional remote programmer is available. The U4468 series is web enabled for affordable monitoring and control of both local and remote tank conditions. The versatile U44xx family is ideal for a variety of applications, including: car wash vehicle position and spray arm locations; vessel liquid level; river, stream or irrigation canal flow and level; waste water effluent gate for discharge rate monitoring; and process control applications for liquids.