Madison Company”s U44xx family of ultrasonic sensors offers 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 ultrasonic sensors are supplied with hassle-free setup software and user-selectable options that allow for a variety of easy application interface considerations. The loop-powered sensors were specifically 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. An optional remote programmer is available. The ultrasonic sensors are a good fit 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; wastewater effluent gate for discharge rate monitoring; and process control applications for liquids.