Slurry density measurement.
Without radiation.

The Rhosonics SDM ECO uses ultrasonic technology to deliver precise, real-time slurry density measurements. No radioactive source, no nuclear licensing, no compliance burden.

  • ✓Eliminates radioactive source and all associated regulatory costs
  • ✓Field-proven in the most abrasive, high-density conditions
  • ✓Works in pipes, launders, half-filled lines, and tanks
  • ✓7" touchscreen + Wi-Fi + full remote access
Fill Out RFQ Form Request a Demo

Complete the RFQ form and send it to our sales team to receive a tailored quotation.

↓ Download Datasheet
NUCLEAR-FREE
Rhosonics SDM ECO Slurry Density Meter No Radioactive Source
1K+
Installations
IP68
Protection
Zero
Nuclear
7"
Touchscreen
Our Process

From inquiry to installation, we’ve got you covered.

01

Fill Out the RFQ Form

Tell us about your process, pipe setup, and application. The more detail you share, the better we can assess compatibility with your plant.

→ Download RFQ Form
02

We Analyse Your Case

Our specialists review your process conditions, installation requirements, and potential interferences to confirm the right fit.

03

You Receive a Custom Quote

We prepare a tailored formal quotation to suit your application based on your provided specifications. No generic pricing, no guesswork.

04

Installation and Commissioning

We can help you through the physical installation and commissioning of the SDM ECO, so your system is up and running correctly from day one.

Why Rhosonics SDM ECO

Built for demanding industrial environments.

Proven Reliability

Acoustic impedance ultrasonic technology. Performs reliably in high-density slurries and highly abrasive conditions where other instruments fail.

Zero Radioactive Material

Completely eliminates nuclear licensing costs, source management, regulatory compliance overhead, radiation risk, and associated downtime.

Modular & Adaptable

Compatible with horizontal and vertical pipes, half-filled pipes, launders, and tanks. One instrument for multiple plant configurations.

Full Remote Control

7" touchscreen, laptop access, optional Wi-Fi, and remote server access. Monitor and adjust from anywhere. No site visit needed.

Continuous Data Logging

6 GB internal storage with continuous logging. Retrieve data via USB for process analysis, optimisation, and compliance reporting.

Simple Installation

Power over Ethernet (PoE). Slide the sensor into the fitting, mount the flange. Minimal downtime, no complex wiring required.

Product in action

See how SDM ECO works.

Industries

Where the SDM ECO excels.

Mining

Density control in flotation circuits, hydrocyclones, and thickeners.

Power Generation

Slurry monitoring in coal, ash handling, and combustion residue systems.

Chemical

Dense suspensions, multi-phase fluids, and chemical process slurries.

Construction & Dredging

Cement paste, concrete, and dredging slurry density control at scale.

Case studies

Real results, real operations.

Australia
100%Radioactive source eliminated

Cannington's silver/lead/zinc operation replaced their nuclear gauge with the SDM ECO, fully eliminating radiological compliance costs while maintaining full measurement accuracy.

Silver / Lead / Zinc Mining Download Case Study
Australia
24/7Continuous reliable measurement

Power plant with stable, continuous fly ash density measurement. SDM ECO outperformed all competing technologies during a comparative evaluation trial.

Power Generation / Fly Ash Download Case Study
Mexico
Grupo Charcas
↓30%Reduction in operating costs

Silver and lead mining operation implemented SDM ECO in flotation circuits. Significant reduction in operational costs compared to their previous nuclear measurement system.

Silver / Lead Mining Download Case Study
Comparison

SDM ECO vs Nuclear Density Gauges.

A clear business case beyond just the technology.

Rhosonics SDM ECO Nuclear Gauge
Measurement technologyUltrasonic (acoustic impedance)Gamma radiation
Nuclear licence required✓ Not required✗ Mandatory & costly
Radioactive source management✓ No source✗ Strict handling required
Regulatory compliance burden✓ Standard✗ Nuclear-specific regulations
Launders / half-filled pipes✓ Compatible✗ Full bore required
Remote access✓ Wi-Fi, server, laptopLimited
Continuous data logging✓ 6 GB via USBBasic
Total cost of ownership✓ Significantly lower✗ High (licensing + management)
Technical specifications

Product data.

Sensor

MethodUltrasonics
Process pressure1–16 bar @ 110°C / 40 bar @ 20°C
Process temperature0°C to +150°C
Rod materialSS316L
Wetted partsCeramics, Duplex 2205
DimensionsØ27 mm × 146 mm

Transmitter

Power supplyPower over Ethernet (PoE)
Ambient temperature-5°C to +50°C
Humidity<95% @ 40°C (non-condensing)
Protection ratingIP68 / NEMA 6P
Weight~1.5 kg
HousingCoated aluminium

HMI / Outputs

HMI power supply18–32 VDC (~17–20W)
Analogue output2× 4–20 mA
Digital outputModbus RS485, Ethernet
Display7" touchscreen
HMI protectionIP65 / NEMA 4
Data logging6 GB, USB retrieval
Get in touch

Talk to our specialists.

Tell us about your process. Our technical team will help you determine whether the SDM ECO is right for your application, prepare a tailored proposal, and support you through installation and calibration.

Direct contact
(08) 9500 9120
sales@instrowest.com.au
instrowest.com.au

The fastest way to get your quote:

→ Download the RFQ Form, fill it out, and send it to our team.

Request a Quote or Demo
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Frequently asked questions

Your questions, answered.

Can the SDM ECO directly replace an existing nuclear density gauge?+

In many applications, yes. The SDM ECO is designed as a non-nuclear alternative for slurry density measurement and is commonly used to replace traditional nuclear density gauges. Suitability depends on the process conditions, pipe or launder configuration, and installation requirements, which is why each application should be reviewed before confirming compatibility. To confirm compatibility with your specific setup, fill out our RFQ Form and send it to our team.

How does its accuracy compare to nuclear technology?+

The SDM ECO delivers high-accuracy, real-time density measurement without the need for a radioactive source. In the right application, it provides reliable performance comparable to nuclear systems while eliminating licensing, compliance and safety constraints. It is field-proven in demanding mining and mineral processing environments.

Does it work in partially-filled pipes or launders?+

Yes. The SDM ECO is designed to operate across a wide range of installation types, including pipes, launders, half-filled lines and tanks. This flexibility makes it suitable for applications where traditional measurement technologies struggle to perform reliably.

What is the typical delivery time?+

Delivery time depends on configuration, stock availability and project requirements. Lead times can be confirmed based on your specific application, and support can be provided to meet project timelines where required.

Does Instrowest provide installation and calibration support?+

Yes. Instrowest provides support beyond supply, including installation guidance, commissioning and calibration assistance. The goal is to ensure the SDM ECO is correctly implemented and performs reliably within your process.