We offer the widest product range of low-flow (mass) flow meters and controllers on the market. Numerous styles of both standard and bespoke instruments can be offered for applications in laboratory, machinery, industry and hazardous areas.
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Learn more about how Coriolis-based flow meters can be used as microfluidic flow meter instead of thermal flow meters. Read the customer story of a microfluidics system builder who used Bronkhorst products.
Are you looking for technical documentation, are you interested to learn more about the measuring principles of Bronkhorst products, or you do want to get in contact with a Bronkhorst Service Engineer? This section will guide you to the relevant service & support topics.
Bronkhorst High-Tech BV the leaders in Mass Flow Meter / Mass Flow Controller technology for gases and liquids, Pressure Controllers and Evaporation Systems.
The operating principle of a Coriolis flow meter is basic but very effective. This phenomenon is all around us in the physical world; for example the earth’s rotation and its effect on the weather.
A Coriolis flow meter contains a tube which is energized by a fixed vibration. When a fluid (gas or liquid) passes through this tube the mass flow momentum will cause a change in the tube vibration, the tube will twist resulting in a phase shift. This phase shift can be measured and a linear output derived proportional to flow.
Do you have questions or are you interesed to learn more about the Coriolis flow meter working principle?
The video explains the Coriolis working principle and how you can combine a Coriolis mass flow meter and a gear pump.
As the Coriolis principle measures mass flow independent of what is within the tube, it can be directly applied to any fluid flowing through it - LIQUID or GAS - whereas thermal mass flow meters depent on the physical properties of the fluid. Furthermore, in parallel with the phase shift in frequency between inlet and outlet, it is also possible to measure the actual change in natural frequency. This change in frequency is in direct proportion to the density of the fluid – and a further signal output can be derived. Having measured both the mass flow rate and the density it is possible to derive the volume flow rate.
Are you interested to learn more about the Coriolis flow meter working principle? Read our blog about the importance of mass flow measurement and the relevance of coriolis flow meters.
Download the e-book 'How to handle low liquid flows' to find out more about 'low flows'. Including in-depth information, technical advice and insider tips from our experts.
Coriolis flow meters measure real mass flow, whereas thermal mass flow meters are dependent of the physical properties of the fluid. True mass flow measurement is an important development across industry as it eliminates inaccuracies caused by the physical properties of the fluid, not least being the difference between mass and volumetric flow. Mass is not affected by changing temperature and pressure. This alone makes it an important method of fluid flow measurement.
Volumetric flow remains valid, in terms of accuracy, provided that the process conditions and calibration reference conditions are adhered to. Volumetric measuring devices, such as variable area meters and turbine flow meters, are unable to distinguish temperature or pressure changes.
Bronkhorst realised a series of compact, cost-effective Coriolis mass flow meters and flow controllers for accurate measurement and control of (very) low flow rates. Check out our product portfolio.
Pump control is used in the production of homecare products. Read more about liquid dosing using pump control for a stable pump speed.
Flow Meters can help you improve your metering pump performance. Read our tips how to use Flow Meters in combination with your metering pump.
The Coriolis measuring principle is somewhat sensitive to unwanted vibrations with a frequency close to the resonance frequency of the sensor tube or a higher harmonic of this frequency. What can you do?