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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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.
In the world of flow measurement different techniques are used. A well-known technique is thermal mass flow measurement. Thermal mass flow meters and controllers can be divided into 3 different sensor principles:
The official name of this measurement technique is ‘Constant Temperature Anemometry’, however, is popularly known as ‘inline measurement’ or ‘direct through-flow measurement’. Amongst various flow measurement techniques, the thermal mass flow measurement based on the CTA principle can be used for both gases and liquids. Mass flow meters based on the CTA principle cover a wide range of measurement and control applications in almost every industry sector.
Examples of applications are burner and furnace control, aeration processes, gas consumption measurement, leak rate tests and environmental air sampling at atmospheric conditions. Within the Bronkhorst® portfolio, these reasonably priced flow meters enlarge the scope of mass flow measurement solutions for higher flow rates (up to 10.000 In/min), for low pressure requirements and for conditions within an application and/or local work environment that would be unsuitable for another measurement principle such as thermal by-pass.
The Constant Temperature Anemometry – CTA – gas flow sensor consists of two stainless steel probes, the first being a heater and the second being a temperature sensor. A constant temperature difference (delta-T / dT) is created between the probes. Regardless of actual flow rate CTA is aiming to keep this delta-T or temperature difference (dT) between both sensor pins at a constant level. The flow rate and the heater energy required to maintain this constant dT are proportional and thus indicate the mass flow of the gas. The actual mass flow rate is calculated by measuring the variable power required to maintain this constant temperature difference as the gas flows across the sensor.
Check out our customer's story about using CTA instruments for 3D printing of metal products.
In this blog we focus on the measurement principle of these mass flow meters using inline CTA measurement (Constant Temperature Anemometry).
How does it compare to conventional CTA (Constant Temperature Anemometer) measurement technologies?
Thermal mass flow instruments that make use of a bypass are what most people have in mind when they think of thermal mass flow instruments. What are the differences?