MASS-STREAM™ Thermal Mass Flow Meters and Controllers for Gases

Direct Through-Flow Measurement

The digital MASS-STREAM™ series D-6300 works on the basis of direct through-flow measurement, following the constant temperature anemometer principle.

  • Lowest range 0,01…0,2 ln/min
  • Highest range 200…10000 ln/min

The instruments have IP65 protection as a standard and are operated with a main-board with all functions for accurate flow measurement and control. They can be supplied with commonly used digital or analogue input/output signals. Along with the standard RS232, PROFIBUS DP, DeviceNet, FLOW-BUS and Modbus-RTU are available as an option.

One key element and innovative improvement is the optionally integrated, modern, multi-functional and multi-colour display, fully IP65 compliant with operator buttons on the instrument. With its multiple functions, such as actual flow indication, totalisation and alarms, MASS-STREAM™ series D-6300 offers an excellent price-performance ratio. The instruments are suitable for application in laboratories, production machinery as well as industrial installations.

Find your product Read more about direct through-flow principle


  • Virtually insensitive to moisture or particulates
  • Low pressure drop
  • Standard accuracy: ± 1.0% RD plus ± 0.5% FS (at calibration conditions)
  • Rangeability up to 1 : 100
  • Rugged, weatherproof housing (IP65, dust and waterproof)
  • Analog or digital communication (RS232 or fieldbus interface)

MASS-STREAM Quality check

MASS-STREAM application


  • Process gas measurement in food industry, chemical and petrochemical industries, in fermentation installations and in biotechnology
  • Sample gas measurement in environmental analysis
  • Gas consumption measurement for internal accounting
  • Methane production in anaerobic digesters
  • Burners
  • Surface treatment
  • Aeration/gas purging
  • Test benches

Application stories

MASS-STREAM Thermal Mass Flow Controller - Principle of Operation

Video animation explaining the functions and features of Bronkhorst's MASS-STREAM Mass Flow Meters and Controllers for gases, following the direct through flow measuring technique.


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Bronkhorst High-Tech B.V.

Nijverheidsstraat 1A
NL-7261 AK Ruurlo (NL)
Tel. +31 573 45 88 00
[email protected]

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