MASS-VIEW® Mass Flow Meters / Regulators / Controllers with local display

The High-Tech replacement for VA meters

The innovative MASS-VIEW® flow meter series are a digital alternative to the conventional VA meters (variable area meters) or purge meters. The MASS-VIEW® flow meter 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. In addition to the flow meters for flow monitoring applications, flow regulators and controllers are equipped with an in-built needle valve for manual control of the gas flow. As an extra feature, the flow controller is equipped with a pressure compensation membrane, eliminating the effects of upstream pressure variations.

The MASS-VIEW series is designed to mimic the straightforward features and vertical format of the VA 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.

MASS-VIEW® meters and regulators
  • Lowest range 0...0,2 ln/min
  • Highest range 0...500 ln/min
MASS-VIEW® controllers
  • Lowest range 0...0,2 ln/min
  • Highest range 0...50 ln/min

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

It offers a standard accuracy rating of ± 2%RD if the flow is higher than 50% of it’s maximum full scale and ± (1%RD + 0.5%FS) on lower flows, handling pressures up to 10 barg (150 psi). Power consumption is low and mechanical process connections are fitted for straightforward VA meter replacement. The MASS-VIEW® incorporates the latest OLED technology, which gives a brighter readout than LCDs, can be viewed from virtually any angle and has fast signal response times. Alarm settings and the selection of a pre-installed gas or pre-set range are accessed via a user-friendly menu, using a 4-way navigation button mounted on the front plate. An analog output signal enables data logging against various parameters and full accountability of gas flow, such as for shared ring main applications.

Find your product Read more about direct through-flow principle


  • 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




  • 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 story


MASS-VIEW Brochure

Quick installation guide

MASS-VIEW Mass Flow Meter / Regulator - Principle of Operation

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.

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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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