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.
Customer satisfaction, innovation and quality of product and service have been the cornerstones of Bronkhorst's success. Based on our experience, innovation and sense of responsibility, a relationship with Bronkhorst assures Performance for Life.
Bronkhorst instruments are used for numerous applications in many different markets. In this section you will find an overview of the main markets for our equipment, illustrated with some typical examples of applications.
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 UK is leader in Mass Flow Meter / Mass Flow Controller technology for gases and liquids, Pressure Controllers and Evaporation Systems.
In bioreactors delicate processes take place to multiply biological materials. These processes contain valuable substances, sometimes even beyond a price tag, and can be an important step in a new vaccine or treatment.
Our commitment to customers in the biotech industry is to quarantee a reliable and reproducible flow control in their bioreactors. For this we use mass flow controllers.
For this blog we interviewed Dion Oudejans and Vincent Hengeveld, Product Managers at Bronkhorst, about the use of flow controllers to realise a realiable and reproducible gas flow control.
‘Reliability refers to the quality of being able to be trusted to do what somebody wants or needs’ (Definition Oxford dictionary). Vincent and Dion explain why our flow controllers can be referred to as ‘reliable’.
Why do we refer to our flow controllers as ‘reliable’?
Our mass flow instruments are using robust sensors and valves, have stable electronics and firmware, and are best in class regarding MTBF – Mean Time Between Failure – data (based on the IEC 61508 standard).
Additionally, material traceability and accuracy are assured by material and calibration certificates, which results in improved reliability for your biological process.
Could you explain what the high accuracy statement means and why this is an important selection criteria for our customers in the biotech industry?
Optimal accuracy and ratios are required to allow the biological substance to grow in the right environmental conditions. During a bioreactor campaign, biological substance grows over time and requires an increasing flow rate during the growth process. Both low and high gas flow rates are needed.
For these applications Bronkhorst offers mass flow controllers, based on reliable and accurate capillary bypass technology and valve technology. This allows you to achieve a dynamic flow range of up to 1 : 1000, providing the low and high flow rates required for the growth process.
Mass flow controllers using capillary bypass technology, have a tube-shaped flow sensor inside that is positioned parallel – in bypass – with the main flow path. There is a split of gas flow into the flow sensor and the main flow path. This technology enables reliable and accurate flow measurement and control for all gases involved.
Only a part of the gas stream flows through the sensor and is warmed up by two heater elements (RHT1 and RHT2). The gas flow through the flow sensor is a proportional measure for the total flow through the instrument. Due to the homogeneous nature of the temperature distribution within the sensor, only the flow rate, the density and the heat capacity of the gas determine the flow output signal (Q, ρ, Cp).
Hereby, a precise conversion calculation (based on ρ and Cp) can be applied to calculate the flow rate of gases other than the calibration gas.
Mean Time Between Failures (MTBF) is used as a measure for availability and reliability of products. MTBF predicts the time that equipment is operating between breakdowns or stoppages. There are several methods of calculating the MTBF rating, with the IEC 61508 based on the Exida component database being the industry standard. With a MTBF rating of over 130 years for the major biotech industry product lines, we are best-in-class.
The conversion method and free software tools, make it is easy for you to calibrate the instruments in the field with Air and Nitrogen. This way, you can maintain the high accuracy of the instrument as documented in the calibration certificate. Which was provided to you together with the flow device.
Especially for bioreactor processes, when working with valuable substances, it is very helpful if you can monitor the ‘health’ of your instruments. To ensure the continuity of your process. For this, several parameters & diagnostics are interesting:
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Do you know what biotechnology is? Read it in our blog and learn more about the flow control solutions for bioprocessing.
The importance of effective maintenance, corrective maintenance and preventive maintenance for flow meters and flow controllers.
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