Chromatography

Advantages of Combining Flow and Pressure Control

May 16 2017 Read 677 Times

In a number of applications, both pressure and flow control play an important role in achieving system performance. One typical example of such an application is split/splitless injectors in gas chromatography (GC).

In gas chromatography, the choice between maintaining constant flow and maintaining constant pressure depends on a multitude of factors such as analytic type, sampling method and detector type. When maintaining pressure constant, flow rate can decline with increasing column temperature. This can lead to incompatibility issues with certain detector types, e.g. mass spectrometers and thermal conductivity detectors. When maintaining flow constant, higher pressures may need to be used, and this may fall out of the range of certain instruments.

Keeping the many advantages and disadvantages of flow and pressure control in mind, one possible solution is to combine both. Axetris mass flow meters and controllers can be easily combined with pressure sensors to build compact and fast-reacting flow+pressure controllers. Due to the quick reaction time achievable with the Axetris MEMS-based thermal mass flow technology, they lend themselves to easy integration as the controlling element in a pressure control loop. Axetris application experts help OEMs worldwide optimally combine flow and pressure control to achieve maximum performance.

Read comments0

Do you like or dislike what you have read? Why not post a comment to tell others / the manufacturer and our Editor what you think. To leave comments please complete the form below. Providing the content is approved, your comment will be on screen in less than 24 hours. Leaving comments on product information and articles can assist with future editorial and article content. Post questions, thoughts or simply whether you like the content.


Digital Edition

International Labmate Buyers Guide 2018

June 2018

In This Edition Articles - Choosing the Optimum Plasma Spectrochemistry Technique for Measuring Elemental Impurities in Pharmaceuticals - Monitoring Airborne Molecular Contamination in Indoo...

View all digital editions

Events

INTERPHEX JAPAN 2018

Jun 27 2018 Tokyo, Japan

PREP 2018

Jul 08 2018 Baltimore, MD, USA

AACC Annual Meeting & Clinical Lab Expo 2018

Jul 29 2018 Chicago, IL, USA

HPLC 2018

Jul 29 2018 Washington DC, USA

M&M 2018

Aug 05 2018 Baltimore, MD, USA

View all events