Simple to install with time-honored reliable performance, They are highly repeatable, rugged sensors that offer exceptional value with little or no maintenance. Process-ready open collector signal with a wide dynamic flow range of 0.1 to 6 m/s. They can be used in low pressure systems. All sensors utilize the same fittings making installation very simple and easy. Paddlewheel sensors and fits into pipe sizes ranging from DN15 to DN200 (1/2 to 8 inches).