Rhosonics introduces the latest generation non-nuclear density meter, the SDM. This measuring instrument is suitable for real-time density measurement in mineral slurries. We help dredging and mining customers to create a safe and pleasant working environment while reducing the workload associated with nuclear gauges (e.g. licenses and safety regulations) More »


We have several Chemical Density Meters; the CDM 9670 (solids meter) and the CDM 9680 (TDS, TSS and density of liquids or slurries) More »


We have several Chemical Concentration Meters; the CCM 9585 (COD Meter), the CCM 8500 and the CCM B32 and B33 (ternary and quaternary solutions). More »

Mining and Mineral Processing

Rhosonics helps the mineral processing industry to create a safe and pleasant working environment by offering non-nuclear technology for density measurement in mineral slurries, to eliminate all costs and risks of radiation-based density meters. More »

Dredging industry

Rhosonics helps dredgers to create a safe and pleasant working environment on their dredging vessels. Dredgers can eliminate all costs, health and safety risks related to radiation-based measuring instruments by making a transition to non-nuclear density measurement technology. More »

FPD Industry

Rhosonics Analytical creates sensors for inline analyis in chemical blending and in-process control. More »


Rhosonics has models for different other industries as well. Density or concentration measurement in the Pulp and Paper industry, chemical concentration measurement in the chemical industry and COD measurement in the wastewater treatment plants of Breweries, Soft drink producers and Distilleries. More »

Density of thickener underflow

Minera Poderosa wants to measure and control the density in the tailings thickener underflow to improve the tailings filtering. The Rhosonics Density Meter is a good solution for this measuring task, because its reliable, stable and real-time measurements More »

Slurry density at dredger

Beens Dredging got the assignment to remove a certain amount of sludge from the port in Amsterdam. The operator of the ship wants to fill the hopper with sand as quickly as possible. A density meter was needed to monitor the real-time density of the sludge. More »

Density meter comparison test

Rhosonics was participating in a comparative test for density meters. Nuclear and non-nuclear density meter suppliers were invited by the contractor for a test period of 4 weeks. The Rhosonics density meter came out as winner of the test. More »

Slurry density at washing plant

The OCP Group needed density meters to monitor the output of a cyclone, mixing tank and two thickeners to improve the efficiency and fully ultilize the production capacity of these separation processes. More »

Density in regrinding circuit

Agnico Eagle needed density meters to monitor the feed of a cyclone and ball mill in the regrinding circuit to improve the efficiency and stability and fully ultilize the production capacity of these processes. More »

Density in coal flocculation tank

Vinacomin wanted to prove the performance of the SDM with an indication out of a 30-day trial. This instrument was used to measure the density in the coal flocculation tanks. More »

Density at Ferrochrome Smelter

The customer gave the assignment to remove manual sampling from the thickener underflow and replace this with an online density measurement tool. More »

Density at Paste Plant

The customer wants to know how much slurry is going to the storage tank More »

Density at Gold Processing Plant

The hydrocyclone battery used in the site relies on having the density at the target setpoint. More »

CDM at Paper Mill

The density is kept at a steady point, which means not too high or too low, close to the target value. More »

Density at the Minera Mexicana

Control density which is very important since they need to know how much slurry they are transferring to tailings. More »


Rhosonics is specialized in using ultrasound waves for sensors and analysers, creating extremely accurate in-line monitoring of fluid mixtures. More »


Open vacancies for Rhosonics. This page is only available in Dutch. More »

ISO 9001

Rhosonics has succesfully passed the ISO 9001 audit in 2016 More »

Customer testimonials

On this page we include customer testimonials in which a customer tells about their experiences with the Rhosonics services and equipment More »


Rhosonics offers presentations and training sessions for customers from time to time, on this page you can find the actual topics and dates. Please register on this page to attend one of the webinars. More »


We design, produce and supply state-of-the-art ultrasonic sensors and analyzers for specific industries. See our solutions for the fields of work we serve.


Founded in 1992, Rhosonics develops sustainable ultrasonic measuring instruments for process optimization in different industries to improve efficiency, reducing costs and increasing safety.

We proudly meet the requirements for the ISO9001 standard since 2010.


Rhosonics integrates two new employees

Rhosonics is proud to announce a further two employees have joined the organization as of September, increasing the total…

Blog: why dry tailings is important

In this blog, we will share more information about the important reasons for density measurement in the process of…

Rhosonics welcomes two new employees

We have welcomed two new employees to our team, in the last months. Erik Kampherbeek has begun at Rhosonics…


We strive to contribute to a greener and smarter industry. We see it as our job to develop and supply reliable measuring technologies that will allow our customers and partners to optimize their production processes and become more sustainable and efficient. Participating in WoodYouCare’s CO2 compensation program further supports this mission.