Stafford, Texas

MASS-VIEW Series, Compact Mass Flow Meters, Regulators, and Controllers

MASS-VIEW Series, Compact Mass Flow Meters, Regulators, and Controllers

The innovative MASS-VIEW Series of mass flow meters, regulators, and controllers are a digital alternative to the conventional VA meters (variable area meters) or purge meters. The MASS-VIEW 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 totalized 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 High-Tech Replacement for VA Meters
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)


  • 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


Digital Alternative to Conventional VA Meters

These mass flow meters, controllers, and regulators offer a standard accuracy rating of ±2%RD if the flow is higher than 50% of its 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.