1. Flow and level measurement and instrumentation by NIVUS
  2. Products & Solutions
  3. Solutions & Applications
  4. Application Examples
  5. Industry
  6. Surface mining
  7. Mine Water Flow Measurement

Mine Water Flow Measurement

Industry - Surface mining

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  • The planned expensive solution using a Venturi flume has been replaced by the cost-efficient and more accurate NivuFlow 750 measurement system.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.

Advantages

  • Higher accuracy and measurement dynamics than the planned Venturi measurement
  • Higher flow velocities and less sedimentation than Venturi measurement with backwater
  • Construction costs reduced by 60%

Used products

i-Serie intelligente Sensoren zur Füllstandsmessung
i-Series Sensors

Ultrasonic sensors with integrated transmitter for measurement of distance, level, empty space or volumes. Suitable for harsh ambient conditions.
NivuFlow 750

For ultrasonic flow measurement of slight to heavily polluted media in part filled and full pipes and channels. Best possible results even under difficult conditions.

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