Yes, We Do That

Mini CORI-FLOW for Oil & Gas Applications

In addition to the vast array of standard products Bronkhorst is renowned for its innovation, engineering excellence and business partnering approach to providing unique solutions to unusual requests. Bronkhorst welcomes the opportunity to share knowledge to develop novel solutions in open partnership.

Here are two such examples:

High Performance Chemical Dosage

Modern day performance chemicals are highly engineered, highly sophisticated and are often a high operating cost. The correct dosage rate is therefore crucial for fine optimization with both under dosing and over-dosing impacting the bottom line. The treatment of produced oil, gas and water with such agents as demulsifiers, wax/corrosion/ scale inhibitors, biocides, scavengers and polishers is critical for on-going operations. Equally, the Research and Development of new additives is enhanced by the measurement and control of ultralow flow rate continuous processes with an accurate, repeatable and reproducible solution.

High Accuracy Measurement of Ultra-Low Gas Flow

Gas seepage into secondary containment or the passing of flow across valve seats is often simply manifolded to flare with the two-fold hit of increased cost and loss of revenue. Highly accurate measurement, by a tamper-proof instrument, of ultralow flow, independent of the fluid properties, allows this resource to be directed back into the revenue stream.

Download the Bronkhorst

Oil & Gas and Petrochemical Market brochure here.

Real Customer Comments

What Others Say About M+W Instruments™

"There are so many connections, fittings and installations within this big facility that we always have to cope with Teflon strip and other types of contamination in our gas lines. Even providing clean gas to the central gas supply, we very much prefer working with the M+W mass flow meters because they always do their job."

 (Gas Consumption)

"We finally found a reliable supplier with integrated mass flow control for our burner gases who can deal with our flow rates of a couple of thousand liters per minute Oxygen and natural gas."

 (Burner)

"Sometimes we cannot avoid that our dairy product is floating into the instrument. But these mass flow meters are so robust that we have installed a type of by-pass gas line purging Nitrogen into the instrument from the back side. Production can be continued after 30 minutes instead of facing a shut down - that is absolutely great and a significant benefit for our customers allowing increased productivity."

 (Food)

Learn more about M+W Instruments™ here. 

Good to Know

 

Mass flow should actually be expressed in units of mass such as g/h, mg/s, etc. Most users, however, think and work in units of volume. This is not a problem, provided conditions under which the mass is converted to volume are agreed.

 

In order to use density in converting mass flow to volumetric flow, we must pick a set of specific pressure and temperature conditions at which we use the density value for the gas.
 

Normal conditions (ln/min): reference conditions are temperature of 0 °C and a pressure of 1013.25 hPa (1 atm).

These reference conditions are indicated by the underlying letter "n" in the unit of volume used.

The direct thermal mass flow measurement method is always based on these reference conditions unless otherwise requested.

An example conversion to volumetric units using Normal conditions:

The mass flow meter indicates 100 g/h of Air flow.

Density Air (@ 0°C) = 1.293 kg/m3

X ln/m Air = 100 g/h / (60 minutes x 1.293 kg/m3)

Flow = 1.29 ln/m Air

Standard conditions (ls/min): reference conditions are temperature of 20 °C (instead of 0 °C) and a pressure of 1013.25 hPa.

These reference conditions are indicated by the underlying letter "s" in the unit of volume used.

An example conversion to volumetric units using Standard conditions:

The mass flow meter indicates 100 g/h Air flow.

Density Air (@ 20°C): 1.205 kg/m3

X ls/m Air = 100 g/h / (60 minutes x 1.205 kg/m3)

Flow = 1.38 ls/m Air

Please be aware of the reference conditions when ordering an instrument. "Normal" and "Standard" can be relative to each customer. When a customer in the US says his reference conditions are "normal" he may very well mean that they are room temperature and one atmosphere, which could be 20° C and 1 atm (that is normal to him) or even 70°F and 1 atm. However an instrument ordered at Normal (ln) reference conditions would use reference of 0° C and 1013.25 hPa.

Why is this important? Because mixing up these reference conditions causes an offset in what the customer expects to see by greater than 7%!

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