The Series ULF is an ultrasonic continuous flow measurement transmitter perfect for maintenance free, non-contact measurement of open channels. This series operates on ultrasonic technology and offers dependable, highly accurate measurements. The ULF features easy programming with a 4 digit LCD screen and a simple menu format. It is great for direct installation over weirs and flumes and compensates for virtually all environmental conditions such as vapors, gases, temperature variations, and wind. The Weatherproof IP65 Body makes this unit ideal for any flow measurement situation, according to the manufacturer.