The new Sitrans LUT400 series ultrasonic controllers offer one-millimetre (0.04-inch) measuring accuracy, claims Siemens Industry Automation Division. These compact, single point ultrasonic controllers are designed to continuously monitor and control level in liquids, solids, or slurry applications for a range of industries. The controllers are available in three models: the Sitrans LUT420 Level Controller, Sitrans LUT430 Level, Pump, and Flow Controller, and Sitrans LUT440 High Accuracy Open Channel Monitor. The company says this series is suitable for number of applications, including those in water/wastewater treatment facilities, manufacturing processes, and industrial storage.