The contractor extended an invitation to four suppliers of density meters to validate and prove their respective density measuring methods. These suppliers utilize different technologies to determine slurry density through measurement via:
- Radiation (Nuclear)
- Acoustic impedance (Ultrasonic)
- Electrical conductivity (Tomography)
- Force and acceleration (Mass/volume)
However, one of the invited suppliers withdrew their participation in the comparison test in advance, resulting in the comparison of three technologies. This evaluation was conducted over a period of four weeks, during which data from each measuring instrument was collected. The density meter test configuration is depicted in the image below, with the Rhosonics’ density meter installed in a metal pipe piece specifically designed for this application.
After four weeks of comparison test, the company chose Rhosonics SDM Slurry Density Meter as the winning technology. This choice was based on the accuracy and stability of the measurements, but also on the easy installation and short calibration compared to the nuclear and tomography devices.
The Rhosonics density meter contributes to:
- Prevention of plant shutdowns caused by sand accumulation in the flow to the river
- Prevention of wear on the power turbine caused by the water/solids slurry
- Improvement of dredging efficiency
- No nuclear source, so no costs for licences, permits or specialized personnel
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