Application

• Rectangular concrete channel 2.5 x 1.5 m (w x h)
• Partially filled
• Pit water purification system of a brown coal surface mining plant
• Medium with high solid contents (iron ochre)

Definition of tasks

• Continuous volume measurement for subject-to-control hydraulic plant efficiency
• Iron oxide (ochre) contained in the pit water shall not influence the measurement system
• Redundant water level measurement

Solution

• The planned expensive solution using a Venturi flume has been replaced by the cost-efficient and more accurate NivuFlow 750 measurement system.
• Apart from flow measurement, the application has been equipped with 2 different level measurements to ensure redundancy. An air-ultrasonic as well as a water-ultrasonic sensor have been used.