> Features

The major features and benefits of the SDMs are:

  • Real-time slurry density monitoring
  • Safe technology (non-nuclear)
  • Abrasion-resistant sensors
  • Easy operation and installation
  • Can be used in half-filled pipes

Introduction

The Rhosonics SDM stands for Slurry Density Meter and that category of instruments allows measuring the density of slurries in real-time. This instrument uses a non-intrusive ultrasonic sensor to measure the real-time density of mineral slurries under high-density levels and at very large pipes. The SDMs have a robust design with sensors that are made of highly abrasion-resistant materials to withstand rough process conditions.

Rhosonics helps dredgers and mineral processing plants to replace nuclear density gauges with ultrasonic technology. This transition allows operators to achieve process optimization in a safer, more reliable, sustainable and cost-effective way. This is how Rhosonics contributes to a greener and smarter industry.

SLURRY DENSITY METER

Mining technology Excellence Award 2020

Rhosonics has won the ‘Environmental Impact’ category in the Mining Technology Excellence Awards 2020 from GlobalData. The award celebrates Rhosonics’ solution for non-nuclear density measurement, the SDM Slurry Density Meter, which is helping hundreds of processing plants around the globe to achieve a greener and smarter operation, as one of the greatest achievements and innovations in the mining industry.

The award is considered a platform for the people and companies that are driving change. We are very proud of winning this award as recognition of our efforts to improve sustainability in the mining industry.

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Pipe Integration Systems

Clamp-in
The Clamp-in is the newest pipe integration system for the SDM. Its design is robust and allows the installation in existing pipes in the process – these can be plastic pipes or metal pipes, or even pipes with internal liners. Besides the easiness of installation, one of the main features of this system is the ‘hot-tap’, which allows the SDM to be removed and put back inline without the need to stop the process.

Wafer
The UWC is a synthetic 60 mm thick flange-like ring made of UHPE (Ultra High Density Poly Ethylene). It can be clamped between two flanges in almost every piping system.

Spool-piece
A spool is a pipe piece that can be mounted between two flanges. The spool piece can be made of HDPE, steel A106/A105, or other steel grades. This installation method is optionally available with a PU liner, and other liners on request. The choice of materials can be different for each application. The spool-piece is mainly used with abrasive applications.

Weldolet
The Weldolet is a weld-on metal adapter that can be used for the installation in new or existing steel pipes. The Weldolet piece can be welded on the pipe at the installation point of choice.

RCU Remote Control Unit

The newest Rhosonics instruments, such as the SDM, are supplied with a sensor, display, and operation panel integrated into a compact all-in-one system. The user interfaces of these instruments can sometimes be hard to reach, for example, because of installation in a difficult position of the process pipe. Yet, in these cases, the Rhosonics RCU Remote Control Unit will be the perfect solution.

This multifunctional device is connected to the instrument by cable and can be used to monitor measurement results and change settings real-time at a safe and convenient location near the process. Another feature of the RCU is the communication protocol converter. For example, one of the RCU models is equipped with a HART/4…20 mA signal to Modbus RTU signal converter which can be very useful in case a Modbus RTU output is required. The HART/4…20 mA signal can also be converted to a digital Profibus DP signal.

Click here to view the RCU brochure

Digital communication via HART

The SDM is a HART certified device. It can communicate digitally with other HART equipment using the analogue 4-20 mA output.

The HART protocol enables remote access and control e.g:

  • Calibration
  • Variable readout
  • Variable ranging
  • And many other features

For more information on the Rhosonics HART implementation see the Rhosonics Field Device Specification (FDS). Click here to open the FDS document. For the implementation, a HART DD-file of Rhosonics is used.

Contact us for more information

Phone: +31 341 370 073
Email: sales@rhosonics.com

Get in touch with Rhosonics for further information about density control for efficient mineral processing. If you want to learn more about our applications, then please also check our case studies and webinars.