—– Measurement Systems / Mass Flow Measurement
Accurate Mass Flow Measurement for Variable-Density Processes
Combine external radiometric, or nuclear, density measurement with volumetric flow data to calculate mass flow without intrusive density instruments, bypass lines, or wetted measurement components.
THE MEASUREMENT CHALLENGE
Volumetric flow alone does not show true mass throughput
When density changes, the same volumetric flow rate can represent very different amounts of material. This is common in slurries, dredging, chemical processing, and other variable-solids applications. Intrusive density instruments can be exposed to abrasion, corrosion, buildup, and difficult operating conditions.
THE RONAN APPROACH
Combine density and flow for a complete mass-flow measurement
Ronan mass flow systems use an external radiometric density gauge together with a volumetric flowmeter, such as a magnetic flowmeter. The density gauge measures the process through the pipe wall while the flowmeter provides volumetric flow. The Ronan microprocessor combines those inputs to calculate and display mass flow in the units that matter to the operation.
HOW IT WORKS
Three coordinated elements calculate real-time mass flow.
A source holder and detector are mounted externally on the process pipe, measuring density without contacting the material. As density changes, the energy reaching the detector changes. The microprocessor combines that density measurement with volumetric flow data to calculate continuous mass-flow rate and totalized mass.
STEP 1
The density gauge measures through the pipe wall.
A Ronan source holder and detector measure process density externally, without a bypass line or wetted density probe.
STEP 2
The flowmeter provides volumetric flow.
A compatible volumetric flow signal, often from a magnetic flowmeter, is sent to the Ronan microprocessor.
STEP 3
The microprocessor calculates mass throughput.
The X96S system combines density and volumetric flow to provide mass-flow rate, totalized mass, alarms, logging, and control outputs.
The Mass Flow Measurement System Is Engineered Around the Process and Measurement Requirements
Ronan evaluates pipe geometry, density range, volumetric flowmeter signal, operating conditions, required accuracy, and reporting requirements to configure the complete mass-flow system.
What determines the weight measurement configuration:
- Pipe diameter, wall thickness, liners, and installation access
- Expected density range, solids content, and process variation
- Volumetric flowmeter type, signal, and integration requirements
- Temperature, pressure, flow conditions, buildup, entrained gas, and required response time
Why density matters for mass flow
By combining density and volumetric flow, the system provides the information needed to manage actual material throughput rather than relying on volume alone.
Common mass flow measurement applications
- Dredging and slurry transport
- Mining process streams
- Chemical and petrochemical transfer lines
- Pulp and paper process streams
Industries
Need help with your measurement application?
Ronan will work closely with you to develop a reliable measurement solution for your most challenging process applications.
If you need immediate assistance, please contact us directly.
About
For more than 60 years, Ronan Engineering has manufactured reliable and leading-edge instrumentation systems. As providers of real-time monitoring and measurements of critical process control points, Ronan has kept some of the world’s largest plants, factories, and facilities running safely and efficiently. Ronan has established manufacturing, sales and service facilities in Kentucky and the United Kingdom.