DIGITAL VARIABLE AREA GAS FLOW Regulator
MASS-VIEW® THE INTELLIGENT MASS FLOW Regulator
The MASS-VIEW® series operate on the principle of direct thermal mass flow measurement. A major advantage of using this type of sensor is that the instruments measure direct mass flow, without the need for temperature and pressure correction.
The MASS-VIEW® has compared to conventional VA meters high accuracy and rangeability (up to 1:100). The 10 pre-installed gases eliminate the need to recalibrate for different gases and therefore reduce the cost of ownership. For your convenience, we also have our flow ranges in other flow units.
Flow regulation can be achieved by operating the needle valve. This high quality gas flow regulator valve offers smooth and fine adjustment of the gas flow rates.
Only need to measure the flow? MASS-VIEW Meters Keep a constant flow? MASS-VIEW Controllers
Pre-installed Gases | MV-301 | MV-302 | MV-304 | MV-306 | MV-308 |
| Air, N2, O2, CO2, CO and N2O | 10 .. 200 mln/min (CO2 and N2O n.a.) | 20 .. 2000 mln/min | 0.04 .. 20 ln/min | 0.4 .. 200 ln/min | 1 .. 500 ln/min |
| Ar | not available | 40 .. 4000 mln/min | 0.08 .. 40 ln/min | 0.8 .. 400 ln/min | 2 .. 1000 ln/min |
| CH4, C3H8 and C4H10 | not available | 10 .. 1000 mln/min | 0.02 .. 10 ln/min | 0.2 .. 100 ln/min | 0.5 .. 250 ln/min |
We have also massflow meters for Helium (He) and Hydrogen (H2)
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Mass Flow Regulator vs. Mass Flow Controller vs. Mass Flow Meter: What's the Difference?
All three instrument types measure gas flow using the same direct thermal mass flow principle — but they differ in what you can do with that measurement:
- Mass Flow Meter — measures and displays the gas flow rate only. Use one when you just need an accurate reading and don't need to adjust the flow.
- Mass Flow Regulator — measures the flow and gives you manual control via a built-in needle valve. You read the flow on the digital display and adjust it by hand. This is the right choice when an operator needs to set and fine-tune flow rates manually.
- Mass Flow Controller — measures the flow and adjusts it automatically to a setpoint you define, using a closed-loop control valve and an input signal (analog or digital). Choose a controller when the flow rate needs to be maintained automatically as part of a process, without an operator adjusting a valve.
In short:
meter = read only
regulator = read + adjust by hand
controller = read + adjust automatically.
MASS-VIEW® by Bronkhorst®: Why the Manufacturer Matters
Every MASS-VIEW instrument on this page is designed and manufactured by Bronkhorst®, a Dutch, family-owned instrumentation manufacturer founded in 1981. What that means for you as a buyer:
- Decades of specialization. Bronkhorst has focused exclusively on low-flow measurement and control for gases and liquids since the early 1980s, with manufacturing still based in Ruurlo, the Netherlands.
- Certified quality. Bronkhorst's manufacturing is ISO 9001 (quality management) and ISO 14001 (environmental management) certified.
- Global support network. With subsidiaries and service centers across Europe, North America, and Asia. Calibration and repairs are backed by an established international supply chain.
- Proven in demanding industries. Bronkhorst instruments are used across semiconductor, aerospace, chemical, and nuclear applications where measurement accuracy and long-term reliability are non-negotiable.
Mass Flow Online as the online web shop of Bronkhorst ships genuine MASS-VIEW instruments directly from stock, with the same manufacturer warranty and support behind every unit.
Which Gases Can You Measure and Regulate? (Nitrogen, Hydrogen, Argon, Propane, CO2 & More)
The MASS-VIEW ships with 10 pre-installed gas calibrations, so you don't need a separate instrument — or a recalibration — for every gas in your process. Depending on the model, supported gases include:
Air, Nitrogen (N2), Oxygen (O2) — the most common process and purge gas applications- Carbon Dioxide (CO2), Carbon Monoxide (CO), Nitrous Oxide (N2O) — common in chemical and combustion-related processes
- Argon (Ar) — widely used as an inert shielding gas
- Methane (CH4), Propane (C3H8), Butane (C4H10) — for fuel gas and combustion applications
- Hydrogen (H2) and Helium (He) — supported via dedicated models with actual calibration, built for the specific safety and flow characteristics of these lighter gases
Because the gas calibration is selectable on the same instrument, switching your process from, say, nitrogen to argon doesn't mean buying a new regulator — just selecting the pre-installed gas on the instrument.
See the full flow-range table above for exact specifications per model.
MASS-VIEW the digital gas mass flow meter
As for the current century, Bronkhorst developed the MASS-VIEW digital gas flow meter series which is the digital high-tech alternative to these traditional variable area meters(gas rota meter).
Thanks to today’s digital possibilities, many other advantages arises for many industrial processes and chemical plants.
- The MASS-VIEW digital gas regulator series operate on the principle of direct thermal mass flow measurement (no by-pass); rather than measuring the volume flow it measures the actual massflow, without the need of temperature and pressure correction.
- The digital OLED display provides you an easy direct or relative reading of the actual massflow. Herewith parallax errors are excluded.
- With this digital flow meter, you can obtain the accumulated flow easily. This availability of data gives insight in costs, leading to data driven decision making power.
- A digital massflow meter can be mounted in any position. The variable area meter needs to be mounted in a vertical position.
- The flow path is made of sustainable aluminum rather than plastic or glass which is fragile.
- The digital instruments are standard equipped with 0-5V, RS-232 and Modbus-RTU output signals. The VA meters usually do not have any output signal available at all.
- The digital flow meter has 2 built-in relays which indicate an alarm situation. Herewith, external devices can be controlled.
- A MASS-VIEW flow meter has multiple pre-installed gases on board as opposed to traditional VA meters, which are produced for one particular fluid only.
- Digital instruments have a range ability of 1:100 and 10 pre-installed ranges, as opposed to VA meters usually have a range ability of 1:10 and one single full scale range only.