Case study - Reservoir Aabach Germany - Continuous monitoring of contact pressure

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Courtesy of The OTT Hydromet Group

With a total volume of approximately 20 million cubic meters of water and a length of 450 meters, the reservoir supplies drinking water for 200.000 people in the area and fulfils also an important  function in the flood protection there. With the new monitoring solution it was possible to reduce the workload and cost for collecting, reading out and transmitting of data significantly. An alarmfunction if limit values are exceeded provides more safety.

Background

Data of the Aabach reservoir:
length: approx. 3 km
width: max. 1,5 km
total volume: approx. 20 million m³

Function - supply of drinking water for more than 200.000 people flood protection

In the dam with its length of 450 m there is a spillway, a bottom outlet and operational outlets in different hights to withdraw water from the system. In the past, daily control visits at the measuring sites were necessary to read out data and forward them to IT for processing. The objective was to automate the process and to monitor the sites continuously.

Monitoring Solution

Digital pressure probes OTT PLS with the bussystem (RS-485/OTT-SDI) measure the contact pressure of the damming structure at 56 sites. Three OTT netDL 1000 record the data at separate segments of the dam and transfer the data via Ethernet network (TCP/IP) directly to the data center of the water board.

  • Automated generation of time series
  • Continuous monitoring with alarm management
  • OTT-SDI Bussystem saves mounting effort
  • Transmission of max. 10 channels/measured values of the OTT netDL
  • Threshold values and alarms are set off automatically

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