Bronkhorst High-Tech BV

Bronkhorst High-Tech designed MASS-VIEW® series operate on the principle of direct thermal mass flow measurement (no by-pass).

An advantage of using this type of sensor is that the instrument measures direct mass flow, without the need of temperature and pressure correction. Other benefits, compared to conventional VA meters are higher accuracy, wider rangeability (up to 1:100), free of parallax errors and an inherently safer construction, by eliminating glass components in the flow path.

MASS-VIEW® flow meters can be supplied in full scale ranges from 0.05 up to 200 ln/min (Air equivalent), with a pressure rating of 10 bar(g) or 150 psi(g). A bright graphical OLED display, clearly visible at wide angles, allows reading of actual flow (value and a bar graph), total flow and type of gas. The display features easy set up via a user-friendly menu, using a 4-way navigation push button. The pre-installed gases eliminate the need to recalibrate for different gases and therefore reduce the cost of ownership.

Additional features & functions include a variety of alarm and counter functions, an analog output signal, digital interfaces and two relay contacts. Flow control may be achieved with an optional needle valve. These high quality needle valves offer smooth and fine adjustment of the gas flow rates.

MASS-VIEW® features

• 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
• Electronic output, analog (0…5 Vdc) and digital interface