Application

• Concrete channel, width 1.2 m
• Partially filled
• Measurement point upstream of screen and grit trap
• High sedimentation loads

Definition of tasks

• Intake measurement as control measure to avoid WWTP flood
• Contactless measurement system due to partially high pollution loads
• Easy installation
• No Ex required (open, aerated channel)

Solution

• No sensors can be installed on the channel bottom or in floats due to high pollution loads or foam on the surface.
• The surface radar measurement system Type NivuFlow 550 has been used since the measurement is for control purposes only without the need for certification.
• The system measures the velocity of the surface waves and calculates the current flow rate from this velocity, the measured level and the defined rectangular channel shape.