The MUTEC (MUETEC – Mütec) DYNArad MF 9000 Mass Flow Meter is designed for accurate mass flow measurement of bulk solids in pneumatic conveying and free-fall applications. Unlike conventional flowmeters for liquids or gases, it is specifically developed to measure dry materials such as fly ash, cement, minerals, powders, and granules, where changing density and conveying conditions make traditional technologies unreliable.
As a dedicated Bulk Solid Flow Meter, the DYNArad MF 9000 combines non-contact measurement of particle velocity with radiometric flow measurement of bulk density to calculate the true mass flow rate in real time. Because the system does not contact the product or obstruct the pipeline, it provides reliable Powder Flow Measurement with minimal maintenance and no process interruption. Suitable for both dilute and dense phase conveying, it helps improve process control, batching accuracy, and production efficiency while delivering stable, repeatable performance in demanding industrial environments.
» Looking for other bulk solids measurement solutions?
Explore the complete Mutec Products, including mass flow meters, inline moisture analyzers, and process instrumentation for pneumatic conveying and bulk material handling.
How DYNArad MF 9000 Measures Mass Flow
The Mütec DYNArad MF 9000 determines mass flow by combining two independent measurements: particle velocity and bulk density. Unlike conventional flowmeters that estimate flow from a single parameter, this system continuously measures both values in real time and calculates the actual mass flow rate. By separating velocity and density measurement, the system remains accurate even when product properties or conveying conditions change.
Velocity Measurement (DYNAvel)
The first step is measuring the velocity of the conveyed material using the DYNAvel system. This electrostatic velocity measurement technology detects the natural electrical charges generated as solid particles move through the conveying pipe. Two capacitive velocity sensors are installed at a fixed distance along the pipeline. As particles pass each sensor, their electrical signatures are recorded and compared using correlation algorithms to determine the travelling time between the sensors, allowing the system to calculate particle velocity accurately.
Because the measurement is completely external to the product flow, it provides non-contact velocity measurement without inserting probes or mechanical components into the pipeline. The system automatically compensates for changes in signal intensity, eliminating the need for routine recalibration while maintaining reliable performance from low concentrations to dense phase conveying.
Radiometric Density Measurement
To determine bulk density, the DYNArad MF 9000 uses radiometric density measurement based on the gamma transmission principle. A shielded gamma source is mounted on one side of the pipeline, while a scintillation detector is installed directly opposite. As gamma radiation passes through the process, part of the energy is absorbed by the conveyed material. The amount of attenuation is directly proportional to the material concentration inside the pipe.
Since the measurement depends on radiation transmission rather than physical contact, it is not affected by temperature, pressure, moisture, colour, viscosity, or other changing material characteristics. This enables stable density measurement even in demanding industrial environments where conventional sensors may lose accuracy.
Mass Flow Calculation
Once velocity and density are measured, the DYNArad MF 9000 performs a continuous mass flow calculation using the following relationship:
Mass Flow = Velocity × Density × Pipe Cross-sectional Area
This real-time measurement provides an accurate mass flow value that can be transmitted directly to a PLC or process control system for batching, truck or railcar loading, production monitoring, and inventory management. Because velocity and density are measured independently, the calculated mass flow remains highly repeatable even when conveying velocity, product characteristics, or process conditions vary. The result is improved process control, reduced loading errors, and more consistent production performance.
Key Features
The DYNArad MF 9000 is designed for continuous industrial operation where accuracy, durability, and minimal maintenance are essential.
- Maintenance-free operation with no moving mechanical components.
- Wear-free measurement thanks to a completely non-contact sensing principle.
- Non-intrusive installation that does not obstruct or disturb the material flow.
- Contactless measurement for long service life and reduced operating costs.
- Highly repeatable results, even when material properties or conveying conditions change.
- Reliable performance in both pneumatic conveying and free-fall applications.
- Independent of changes in bulk density, flow velocity, and product characteristics after calibration.
- Suitable for harsh industrial environments with high temperatures, dust, and abrasive materials.
Technical Specifications
| Specification |
DYNArad MF 9000 |
| Product Name |
DYNArad MF 9000 Mass Flow Meter |
| Measurement Method |
DYNAvel electrostatic velocity measurement + radiometric density measurement |
| Velocity Range |
Approx. 0.5–100 m/s* |
| Concentration Range |
Dilute phase to dense phase conveying |
| Flow Range |
Up to 500 t/h* |
| Pipe Size |
DN100–DN400 |
| Operating Pressure |
Up to 64 bar |
| Protection Class |
IP67 |
| Accuracy |
Up to ±1% (application dependent) |
| Housing |
Rugged industrial housing for harsh environments |
| Installation |
Pneumatic conveying pipelines and vertical free-fall systems |
*The actual measuring range depends on the product, pipe diameter, and application conditions.
The DYNArad MF 9000 supports a wide range of industrial conveying systems, from DN100 to DN400 pipelines, with flow capacities reaching 500 t/h and operating pressures up to 64 bar. Its IP67-rated components are designed for demanding process environments, while the non-intrusive measuring principle allows installation without restricting product flow. Because the system independently measures particle velocity and bulk density, it delivers stable and repeatable mass flow data for process monitoring, batching, truck loading, and production control across a wide variety of bulk solid applications.
Applications
The MUTEC DYNArad MF 9000 is designed for continuous online mass flow measurement of bulk solids across a wide range of industries. Its contactless measuring principle makes it suitable for abrasive, dusty, and high-temperature applications where conventional mechanical flowmeters often experience wear or reduced accuracy.
Power Plants
In coal-fired power plants and biomass facilities, the DYNArad MF 9000 provides accurate measurement of fly ash during pneumatic transport, storage, and truck loading. It is also suitable for ash conveying systems and ash humidification processes, helping operators improve loading accuracy, monitor material consumption, and optimize plant efficiency. A typical application is online fly ash measurement in vertical truck loading stations, where precise mass flow control prevents underfilling and overloading.
Cement Industry
The cement industry handles highly abrasive bulk materials that are difficult to measure accurately. The DYNArad MF 9000 continuously measures cement powder, kiln dust, clinker dust, and other dry materials transported through pneumatic conveying systems. Reliable mass flow data supports process control, batching accuracy, and production monitoring while minimizing maintenance requirements.
Mining & Minerals
Mining and mineral processing plants can use the system to measure mineral powder, lime, gypsum, and similar dry bulk materials in pneumatic conveying lines or free-fall applications. Because the measurement is independent of changing material properties, it delivers stable performance even with varying bulk densities and process conditions.
Chemical Industry
For the chemical industry, the DYNArad MF 9000 enables continuous monitoring of powder conveying processes involving bulk chemicals, additives, pigments, and other powdered products. Accurate real-time mass flow data improves dosing consistency, enhances process automation, and supports tighter quality control without interfering with the product flow.
Truck & Rail Loading
The DYNArad MF 9000 is ideal for high-accuracy truck loading, railcar loading, and automatic batching applications. Continuous online mass flow measurement allows loading systems to stop automatically when the target weight is reached, reducing loading errors and improving operational efficiency. The technology has been successfully implemented in fly ash truck loading stations to achieve fast, precise, and repeatable loading performance.
Benefits of Non-Contact Mass Flow Measurement
» Need a compact alternative for bulk solids flow measurement?
Discover the MUTEC MF 3000 Bulk Solids Mass Flow Meter , designed for continuous online flow measurement in a wide range of powder and granular material applications.
Unlike intrusive flowmeters that insert sensors or mechanical components into the product stream, the DYNArad MF 9000 performs completely contactless measurement. This design eliminates many of the common issues associated with conventional bulk solid flowmeters.
- No pressure drop because nothing obstructs the conveying pipeline.
- No moving parts, eliminating mechanical wear and reducing failure points.
- Low operating cost with virtually maintenance-free operation.
- Long service life thanks to the wear-free measuring principle.
- No product contamination or disturbance of the conveying process.
- Stable measurement despite changes in material properties, conveying velocity, or operating conditions.
- Excellent repeatability for process control, batching, and inventory management.
- Suitable for abrasive powders and harsh industrial environments where intrusive meters require frequent maintenance or replacement.
» Need to monitor both mass flow and moisture?
Combine the DYNArad MF 9000 with the MUTEC HUMY 301 for real-time process optimization in powder and bulk solids handling.
Why Choose MUTEC DYNArad MF 9000?
Selecting the right mass flow meter is not only about measurement accuracy but also about long-term operational performance. The DYNArad MF 9000 is designed to provide consistent results under demanding industrial conditions while minimizing maintenance requirements and production downtime.
No routine recalibration after process calibration, ensuring consistent long-term performance.
Maintenance-free operation with no moving or wear-prone mechanical components.
High repeatability for reliable production monitoring, batching, and loading applications.
Delivers excellent measurement stability even when bulk density, conveying velocity, or material characteristics vary.
Suitable for harsh industrial environments involving dust, abrasion, high pressure, and continuous operation.
Contactless, non-intrusive measurement with no interference to the product flow.
Provides outstanding process reliability for automated process control and inventory management.
Designed for low maintenance, reducing lifecycle costs and maximizing system availability.
Installation Considerations
Proper installation is essential to achieve the highest measurement accuracy and repeatability. The DYNArad MF 9000 is designed for easy integration into both new and existing pneumatic conveying systems without restricting material flow.
- Installation position: Select a straight pipe section with stable material flow to ensure accurate velocity and density measurement.
- Vertical conveying: The preferred installation is on a vertical pipe, particularly for truck loading and gravity-assisted conveying, where the material flow is more uniform.
- Free-fall installation: The system is also suitable for free-fall installation, allowing continuous online mass flow measurement without mechanical contact.
- Horizontal pipe: Horizontal installations are possible when sufficient straight conveying distance is available to maintain stable flow conditions.
- Detector location: The scintillation detector is mounted externally on one side of the conveying pipe to receive the transmitted gamma radiation.
- Source location: The shielded gamma source is installed directly opposite the detector, creating a fixed gamma transmission path through the process material.
- Flange and mounting: No special measuring spool or intrusive flange arrangement is required, making integration into existing pipelines straightforward with minimal process modification.
- Calibration: A one-time process calibration establishes the measurement reference. After commissioning, routine recalibration is generally unnecessary, while the system continues to deliver highly repeatable results under varying operating conditions.
