Rhosonics Ultrasonic Density and Concentration Analysers
PMA supplies and supports Rhosonics ultrasonic analysers for continuous, real-time measurement of slurry density and liquid concentration. Explore non-nuclear instruments for mining, dredging, cement, chemical processing, brewing and wastewater applications.

The SDM is Non-nuclear
The SDM ECO uses new sensor technologies including
Ideal for various setups, including half-filled pipes.
Real-Time Monitoring
Durable Design
User-Friendly Interface
Safe and Sustainable
From non-nuclear slurry density monitoring to liquid concentration and ternary analysis, PMA helps you specify the right Rhosonics instrument for your process.
Technical guides for slurry density measurement
Use these practical guides to compare technologies, plan an SDM ECO installation and identify the right measurement points for mining or dredging applications.
Nuclear or non-nuclear?
Compare measurement principles, UK radiation duties, installation and evidence.
Install and commission
Prepare the fitting, calibration, validation and handover plan.
Mining processes
Map density measurement across grinding, cyclones, thickeners and tailings.
Process application guides and tools
Move from a broad product search to the exact measurement duty: thickener underflow, hydrocyclone feed, tailings or solids calculations.
Thickener underflow
Plan a representative measurement for pumping, filtration or mass-flow context.
Hydrocyclone feed
Use density with pressure, flow, ore and classification context.
Tailings monitoring
Separate thickener, filtration and transport-pipeline measurement duties.
Solids calculator
Estimate solids by mass and volume, with optional dry-solids throughput.
Stay informed withthe latest insights
Visit our blogA recent deployment at Grupo Mexico’s mining plant has demonstrated the SDM ECO’s robust performance, accurately measuring slurry density in a tailings thickener underflow. The result? Enhanced process optimization in a safer, more sustainable manner.

Ultrasonic process measurement, designed for the realities of industry.
Rhosonics analysers use ultrasonic wave velocity to measure slurry density or liquid concentration for continuous in-process control.
No moving parts
No consumables
Calibrated at manufacture
Ultra-low maintenance

Unique sensor design
Measurement matched to the application.
PMA helps define the process objective, select the appropriate Rhosonics analyser and plan installation, commissioning and verification.
Ultrasonic Technology to measure liquid concentrations
Rhosonics sensors can be configured for direct pipeline, tank or bypass-stream installation, depending on the instrument and process conditions. Capable of measuring a range of industrial chemicals in solution including acids, bases, COD, metals and more.

Real-time process control from ultrasonic analysers.
Ultrasonic measurement technology outperforms traditional methods of analysis. Quicker, more durable, lower maintenance and inline.
Not sure which product is right for you – find out more by downloading the Rhosonics company brochure.
Real-time data for immediate process adjustment
Explore how continuous ultrasonic measurement supports aqueous solutions, food and beverage production, mixed-liquid processes and slurry density control.

Aqueous solutions
Measure dissolved solids in liquids including chemicals, acids, alkalis, alcohols, salts and oils.

Food and beverage
Monitor dairy, beer, dough, juice, alcohol and other food or beverage processes continuously.

Continuous measurement
Track mixed liquids such as electrolytes, pickling acids and other acid-and-salt combinations in real time.

Slurry density measurement
Measure suspended solids, TSS, TDS and density continuously in demanding slurry processes.
This SDM which is new to our product line and is highly suitable for density analysis in many kinds of slurries.



Typical applications include: Concentrated Acid/Alkali, Glycols in water, Mining slurries, Electroplating, Brewing, Paper mills – send us an enquiry for your application.
Find the right application guidance
Explore measurement guidance by industry, or search all 49 application pages by process, material, measurement objective, analyser or location.
Browse application libraries
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