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March, 2014
News from Bronkhorst USA

Mass Flow and Pressure

Measurement and Control

In This Issue
Why Bronkhorst?
Compact Dosing Solution
This Just In
Good to Know
Laws and Guidelines
Quick Links

  
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Why Bronkhorst?

Performance for Life!

 

We have a simple answer to the question; "Why Bronkhorst?"

 

Bronkhorst develops and manufactures Thermal and Coriolis instruments for measuring and dosing the flow of gases and liquids.  Based on our experience, innovation, and sense of responsibility a relationship with Bronkhorst assures Performance for Life.

 

Bronkhorst lives the following three principles in order to bring best in class products to market.

 

Experience

By making precision our profession we have been viewed as experts within laboratories, machine-building and many other industries for more than 30 years.  We are the market leader in Europe and one of the top 5 companies in our field globally.

 

Innovation

At Bronkhorst we continually take a market-driven approach in developing and improving products.  This results in both standard products and customer specific solutions which find their way into a wide variety of high-performance applications in numerous sectors.

 

Responsibility

We consider ourselves responsible for the level of quality we deliver, the people we work with and the world in which we operate.  Because that sense of responsibility is deeply rooted in our DNA, our customers, suppliers, employees, and the whole of society can always rely on Bronkhorst.  Today, tomorrow, for life!

 

Compact Dosing Solution

Batch Dosing With CORI-FLOW™

 

This is CORI-FILL™

Bronkhorst® manufactures Coriolis Mass Flow Meters and Controllers for gases and liquids. The CORI-FLOW™ product range offers true mass flow in a range from 20 g/h up to 600 kg/h. The compact mini CORI-FLOW™ Series are designed for capacities from 100 mg/h up to 30 kg/h. Both mini CORI-FLOW™ and CORI-FLOW™ instruments can be combined with an actuator:

 

  • shut-off valve for short time batch sequences (down to < 0.3 sec.)
  • proportional valve for accurately controlled longer duration batch sequences
  • (gear) pump for long time accurate controlled batch sequences without the need of pressurized vessels

 

Compact Fluid Dosing Assemblies

Each Compact Fluid Dosing Assembly consists of a Coriolis Mass Flow Meter of the mini CORI-FLOW™ or CORI-FLOW™ series and a valve or a (gear) pump. The onboard PID-controller of the flow meter will be optimized for controlling the valve or the (gear) pump and enables an immediate start of dosage after connecting power and fluid accessories. Just enter the desired flow or batch at the operation module (or remotely by computer) and the compact unit will dose true mass flow, for example independent of ambient temperature and back pressure.

 

Using the integrated CORI FILL™ technology, the Coriolis meter's totalizer is capable of highly accurate batch dosage. It also ensures the actuator will react as soon as the batch has been reached. Normally several components would be needed to achieve this:

  • flow meter
  • valve/pump
  • batch counting module/PLC
  • software handling these items

CORI-FILL™ offers all this functionality in one component, in one assembly and from one supplier, without the need of complex programming of additional hardware.

 

 

Applications

CORI-FILL™ has been successfully applied for dosage of additives, fragrances, flavors, colorants and sterilization fluid (H2O2).

 

 

CORI-FILL™ Alternative to gravimetric method

To overcome the limitations of the gravimetric method to shorten production time and to improve the quality of the final product, (mini) CORI-FLOW™ instruments can be used. Thanks to the CORI-FILL™ technology with integrated batch counters and the facility to directly operate connected shut-off valves, the (mini) CORI-FLOW™ instrument is capable of dosing the exact desired amount of compound into the collecting vessel. It's also possible to use many instruments for simultaneous dosing and there is no need for repeated "no-flow" for zeroing purposes. Just a short reset command to each Coriolis instrument is enough to start the next batch. The amount to be dosed can be easily preset by programming the batch counter via a fieldbus connection.

 

Batching can be fast and accurate, comparable to that of weighing scales. The (mini) CORI-FLOW™ instruments have the facility for highly accurate and fast dosage by operating directly shut-off valves. Thanks to their small footprint it is possible to mount the (mini) CORI-FLOW™ instruments as a compact system close to the shut-off valves. This will avoid dead volume and will improve reaction time and accuracy (no delay-effects in long flow-line possible).

 

Benefits

  • Shorter production times, due to simultaneous dosing of compounds
  • Better product results, thanks to less evaporation of volatile fluids
  • No smell due to evaporation when dosed into open storage vessels, needed for weighing scales
  • No problems with allergens due to separated dosing lines
  • Compact solution, due to small footprint, without long lengths of tubing between flow meter and valve or pump
  • Reduced risk of gas enclosure in tubing causing delay effects
  • High accuracy due to Coriolis technique and compact assembly
  • Fast response times (down to < 0.3 sec.)
  • Less overhead for PLC/operating system thanks to CORI-FILL™ technology using integrated batch counter and direct actuator control

 

Click here for CORI-FILL™ brochure.

 

This Just In

Coriolis In Chemical Market

 

Bronkhorst Cori-Tech has released a new market-focused brochure for the chemical industry.  Included in the brochure are customer testimonials and actual example applications.

 

The new brochure is available from the Bronkhorst USA web site (click here).

 

 

 

Good to Know

Chemical Resistance 

  

Idea

Mass flow meters and controllers are designed to measure and control the flow of various gases and liquids.  In many applications a "jack of all trades" elastomeric seal, such as Viton® flouroelastomer, is used with no chemical compatibility issues.  Many customers never even think about their elastomeric seal options. However there are also many applications where the gas or liquid is more aggressive and would cause chemical compatibility issues with a Viton® seal; issues such as elastomeric swelling or elastomeric breakdown.

 

KalrezThere are other elastomeric seal choices available, such as Kalrez® and EPDM.  The selection of elastomeric sealing material for our instruments must be based on chemical resistance at operating conditions. Bronkhorst has gathered a lot of information about the compatibility of various compounds and we can advise our customers accordingly.

 

Another area to be aware of for chemical resistance is the body and sensor material of the instrument.  Stainless steel is a common body and sensor material, but applications with particularly aggressive chemicals may require a Hastelloy sensor, or a sensor coated for higher chemical resistance.

 

In conjunction with the advice from Bronkhorst, two useful web sites for helping you decide which elastomeric seal or sensor material are appropriate for your application are the Cole-Parmer Chemical Compatibility Database  and the DuPontChemical Resistance Guide.

 

Laws and Guidelines

Finnigan's Law

 

The farther away the future is, the better it looks.