The Next Quantum Leap for Gas Flow Measurement and Control 

Bronkhorst® has successfully supplied gas, liquid and vapour flow/pressure measurement and control instrumentation to numerous industries for over 34 years. The latest generation El-Flow Prestige thermal mass flow meters and controllers represents a truly ground-breaking shift in versatility and user-friendliness.

Whilst further technical details can be seen below, the principal customer benefits are based upon

• Further advances in flow-signal processing
• Highly stable flow control regime virtually impervious to process fluctuations
• Advanced control valve design
• An on-board gas conversion model
• Significantly reduced power consumption
• A user configurable device with a multitude of additional features and benefits

These benefits were developed in answer to the specific needs of industry to constantly improve both the technological and commercial basis upon which economic success is based. The close collaboration mentioned above highlighted very clear requirements to increase – yield, profitability, process stability, quality, flexibility, lifetime and MTBF. At the same time, these benefits would be required to decrease – waste, energy, re-work, inventory, cost, downtime and complexity. The Bronkhorst El-Flow Prestige has answered each and every one of these needs and a few more besides!

The Sensor: Now benefits from the enhancement of the Differential Temperature Balancing technique whereby the two sensor windings are power regulated to the same temperature above the gas stream ambient. Upon flow, the difference in power between these two windings to maintain the same measured temperature is directly proportional to the mass flow.  This technique, and the sensor design, provides significantly increased reproducibility, linearity within the calorimetric flow regime, insensitivity to humidity fluctuation and the eradication of signal fold-over upon flow saturation.