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.
Instruments, like flow meters, that are used in the food processing industry are subject to demanding regulatory requirements. Authorities like FDA (Food and Drug Administration), 3-A, EHEDG (European Hygienic Engineering and Design Group) and AWS (American Welding Association) have set standards and regulations for equipment and processes to mitigate public health risks as much as possible.
For example, health risks in food production processes can be caused by bacteria accumulating in rough, less accessible areas of equipment or by cross-contamination of inedible substance with food products. This must be avoided at all cost.
When manufacturing equipment in compliance with voluntary industry standards like 3-A or EHEDG, very high-quality standards must be adopted for hygienic design, materials used and fabrication processes. One special process that we have implemented and that we are focusing on is this blog is welding of joints.
One of the aspects described in the 3-A Sanitary Standards is the welding of joints for hygienic use. A perfect weld joint must be strong, leak-tight and smooth, free of cracks and voids and with a minimum of soot contamination, oxides or other foreign matter if they are to be used in food production processes.
Welds are used instead of gasketed joints for a variety of reasons, e.g.:
In order to achieve consistent welding quality, it is imperative that, besides proper materials and welding equipment, there is a quality framework in place. This framework contains training of personnel, standardized validation & verification processes, well established inspection methods and continuous improvements. All elements contribute to a consistent and top-level weld quality. The requirements for such welding quality framework are all standardized by decades of experience from the industries, therefore standards like 3-A rely heavily on specifications set by the American Welding Society (AWS).
In the food processing industry, flow meters are often part of a pressurized system. This means that besides the hygienic requirements to be met, it is also mandatory to comply with the Pressure Equipment Directive. Luckily, the welding standards for hygienic use and pressure equipment largely overlap, so a single welding quality framework can be implemented to cover both requirements.
There are numerous welding processes including TIG, MIG, MAG, all having their own characteristics and pros and cons. Processes are selected on the characteristics of the job like material type and thickness, reachability, required speed, quality requirements etc. Bronkhorst typically applies two of these processes. We weld process connections to flow meters using orbital arc welding, which is a mechanized variant of TIG welding. Next to this, we weld capillary tubes in sensors using laser welding. Our suppliers utilize laser welding as well for some other parts for us. These two processes result in very high quality levels and they are the perfect choice.
Our new generation of ultrasonic flow meters, the ES-FLOW series, has been launched recently. By implementing all the processes mentioned above, this series of liquid flow meters meets 3-A Sanitary Standards (equipment type 28-06 Flow Meters). Voluntary use of the 3-A Symbol on dairy and food equipment conveys assurance that equipment meets sanitary standards, provides accepted criteria to equipment manufacturers for sanitary design, and establishes guidelines for uniform evaluation and compliance by sanitarians. Bronkhorst is now authorized to use the 3-A Symbol on this flow meter series, which opens up many hygienic applications.
Driving on the experiences gained with the 3-A certification, Bronkhorst is now aiming to expand its hygienic welding capabilities to other products and processes, to offer a complete product portfolio for the food processing industry. Bronkhorst may also provide hygienic welding documentation and certificates upon request.
Accurate processes are desired for the production of sweets. For these processes we developed an ultrasonic flow meter for small liquid volume flows, called the ES-FLOW. Read the ES-FLOW flow solution in the blog.