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 High-Tech BV the leaders in Mass Flow Meter / Mass Flow Controller technology for gases and liquids, Pressure Controllers and Evaporation Systems.
Efficiency and yield in a process require a stable gas flow. This gas flow can be measured and controlled by a thermal mass flow controller. As a Product Manager at Bronkhorst High-Tech, I experienced that various external factors can have influence on the measurement accuracy and control stability of mass flow controllers (MFCs).
Some examples of external factors are:
What is cross talk? Cross talk typically arises when multiple mass flow controllers are positioned in close proximity in the same pipe, or installed upon the same rail or frame. The line-pressure from a gas regulator is affected by the flow demand of the flow controllers. When the flow instrument is changing its setpoint, it will affect the line-pressure. Due to this pressure change, the flow measuring section in a conventional flow controller is affected, indicating an incorrect flow measurement that does not represent the actual flow through the MFC.
The smaller the nominal flow of the flow controller, the bigger the effect will be to a setpoint change of a larger, parallel installed MFC.
Dynamic pressure compensation is the compensation for rapid pressure changes. This can occur when a higher-flow mass flow controller on the same supply line changes setpoint, an undesired effect which is also known as ‘cross talk’. The moment that these rapid pressure changes are identified by the pressure sensor, the valve control will be adjusted accordingly so that the flow remains stable.
The on-board conversion algorithm makes it possible to convert the stored calibration fluid into one of the 25 on-board gases* (multi-fluid multi-range functionality).
The actual measured temperature and pressure is used in the on-board conversion model to compensate for changes in the process conditions. This leads to a more reliable and accurate conversion and control stability.
* As per December 2018 custopmers can select one out of 100 on-board gases.
To learn more about the EL-FLOW Prestige Pressure Insensitive, please visit our product page.