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Digital Variable Mass Area Flow Regulator


The High-Tech replacement for VA Regulators

MASS-VIEW® digital mass flow regulators

  • Lowest range 0...0,2 ln/min
  • Highest range 0...500 ln/min

* ln/min equals SLM at 0°C and 1 atm(STP)

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The innovative MASS-VIEW® mass flow regulator series are a digital alternative to the conventional VA meters (variable area meters) or purge meters
The MASS-VIEW® mass flow regulator series incorporates a digital bar graph of actual gas flow, which is, thanks to the OLED (organic light emitting diode) technology, clearly visible from all angles, as well as indicating flow units, gas type and totalised figures. 

The MASS-VIEW series is designed to mimic the straightforward features and vertical format of the VA meter/ball meter, but with the considerable added benefits of an electronic output signal, high measuring accuracy, virtual independence from gas temperature and pressure variations, freedom from parallax error and inherently safe construction, by eliminating fragile glass components in the flow path. Flow can be regulated by the integrated high resolution needle valve in the instrument. This make a flow regulation effortless and smooth. 


  • Clear indication in:
    • actual flow rate (bar graph and value)
    • desired flow units
    • type of gas 
    • totalized flow
  • Bright, wide-angle OLED display
  • Free of parallax errors
  • Virtually independent of pressure and temperature variations
  • Low pressure drop
  • Wide flow ranges
  • Fast response
  • High accuracy
  • Alarm and counter functions (2 alarm contacts available on meters)
  • Analog (0..5 Vdc) and digital communication (Modbus-RTU/ASCII, RS-232 interface)
  • Configurable password protection
  • 10 pre-installed gases available (Air, N2, O2, Ar, CO, CO2, CH4, C3H8, C4H10, N2O) or H2 or He
  • 4 selectable ranges (100%, 50%, 25% and 10% of maximum full scale range)
  • Digitally calibrated

Video MASS-VIEW Mass Flow Regulator

In this video Mass Flow ONLINE, a business unit of Bronkhorst High-Tech, the market leader in the field of thermal mass flow meters and controllers, presents the operation of the MASS-VIEW series Thermal Mass Flow Meters, Regulators and Controllers employing the direct through flow measurement technique.

Digital Variable Mass Area Flow Regulators


  • Burner control (furnace construction)
  • Welding (welding gas monitoring)
  • Leak measurements (quality, environment)
  • Coating (equipment construction)
  • Regulation of gaseous atmospheres (biotechnology)
  • Measurement of gas consumption (hospitals)
  • Test equipment (production maintenance)
  • Local preparation of a gas mixture
  • Flow rate monitoring (laboratories)
  • Cutting (steel sheets)
  • Analytical equipment
  • Aeration / sparging (food products, ice cream / edible oils)
  • Blanketing (food)
  • Fermentation (food, biotechnology, pharma)

Application stories

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Quick links to Mass Flow Regulator model pages

Mass Flow Regulator model pages

Full Scale capacities versus pressure rating and gas type 

PN 10 bar - Hydrogen

PN 10 bar - Helium

PN 10 bar - Other gases

MV-391-H2  |  50 ... 200 mln/min H2

MV-391-HE  |  50 ... 200 mln/min He

MV-301  |  50 ... 200 mln/min N2-equivalent

MV-392-H2  |  100 ... 1000 mln/min H2

MV-392-HE  |  200 ... 2000 mln/min He

MV-302  |  200 ... 2000 mln/min N2-equivalent

MV-394-H2  |  1 ... 10 ln/min H2

MV-394-HE  |  2 ... 20 ln/min He

MV-304  |  2 ... 20 ln/min N2-equivalent

MV-396-H2  |  10 ... 100 ln/min H2

MV-396-HE  |  10 ... 100 ln/min He

MV-306  |  20 ... 200 ln/min N2-equivalent



MV-308  |  50 ... 500 ln/min N2-equivalent

Product details

Hook-up diagram
Hook-up diagram
Digital variable area flowregulator
Digital variable area flowregulator
Digital variable area flowregulator
Digital variable area flowregulator
Digital variable area flowregulator
Digital variable area flowregulator
Dimensions MV-1XX and MV-3XX
Dimensions MV-1XX and MV-3XX