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.
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.
Oxy-fuel combustion processes are frequently used in surface treatment applications like re-burning, or glass polishing. Oxy-fuel combustion is a combustion process using pure oxygen as an oxidiser instead of Air. By excluding nitrogen from the combustion process, the flame temperature increases significantly. This results in less smoke and a limitation of NOx production.
Mass flow control is an effective solution to control and manage the gas supply in burner and furnace applications. Recognising the requirements of oxy-fuel combustion processes, Bronkhorst has developed a full product line of gas flow instruments for such applications.
In these combustion processes, the result depends mainly on the quality and consistency of the burner flame. The flame is produced with a gas mixture of oxidant (O2) and fuel (natural gas) from all burners of the production line. It is therefore essential to supply a constant quantity of gas, thus preventing the flame from going out, and to ensure a constant and homogeneous gas mixture. Maintenance costs must be minimised, and the risk of production stops must be reduced. The use of gas flow meters also reduces the previous reliance on the operator's skills to manually set the required gas flows.
The solution provided by Bronkhorst can be compared to a pressure control; two gas mass flow controllers for each burner – one for the fuel (methane, propane, or acetylene) and one for the oxidant (air or oxygen in the case of oxy-fuel combustion) – will be combined.
The flow controller from the MASS-STREAM series has a robust IP65 rated housing, making it ideal for dusty and hot conditions. These instruments are less sensitive to contamination rather than traditional mass flow meters because its measuring element is in the main gas stream.
To achieve an ideal combustion, it is crucial to accurately control the amount of gas injected.
The thermal mass flow technology used for the MASS STREAM series, allows the measurement and control of flow rates independent of pressure and temperature conditions. This eliminates the need to install an expensive pressure reducing valve upstream of the process to stabilise the pressure. In addition, if the burner starts to clog and generate back pressure, the combination of flow meter, valve and control loop will compensate for this back pressure by acting on the valve opening of the instruments, thus maintaining process stability. This action on the valve can be followed on a data acquisition system and allows prevention and limitation of production stops.
A local control function on the instrument itself is possible when the device is equipped with the optional integrated display and its operator buttons. It can also be connected to a PLC for a command control or to an acquisition system to ensure the follow-up of the process.