Understanding vacuum pressure measurement

When it comes to choosing a vacuum gauge, understanding the application and vacuum pressure measurement required is crucial to making the right choice.

But while pressure measurement plays an important role in all vacuum applications, there’s no universal vacuum gauge that will respond accurately throughout the range from atmospheric pressure to 10-12 mbar.

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 Interview with Peter Lambertz

In our latest interview we spoke to Peter Lambertz, a Business Development Manager in the R&D Market, and one of the contributors to the Vacuum Science World knowledge platform.

With over ten years of experience in the field of vacuum science research, we discussed his background, specific interests and the challenges he has encountered in the vacuum industry over the years.

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 Interview with Dr Andrew Chew

In another addition to our expert interview series, we spoke to Dr Andrew Chew, who is a Global Applications Manager in the Scientific Vacuum Sector.

In his role, he is developing customised solutions for a large number of R&D applications such as Surface Analysis, Electron Microscopy, Mass Spectrometry, and many more. Find out more about his background and involvement with vacuum technology by reading our Q&A below.

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Working with turbomolecular vacuum pumps

How does a turbomolecular pump work? 

Turbomolecular pumps (TMPs) are kinetic vacuum pumps which operate using a very fast spinning rotor (usually rotating at between 24,000 and 90,000 RPM). Their typical operating pressures are in the high to ultra-high pressure range between 10-3 and 10-11 mbar, employing pumping speeds of between 10 and 4,000 l/s.

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How to find the right vacuum pump system for your lab work

Laboratory technicians and scientists regularly use vacuum pumps (frequently of the bench-top variety) for a range of tasks including aspirating/filtering, controlling or inducing solvent evaporation in concentrators, as well as in gel driers, vacuum ovens, desiccators and rotary evaporators.

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Eight top tips for working with oil-sealed rotary vane pumps

Rotary vane pumps are considered wet, positive displacement pumps, with the term “wet” denoting that the gases being pumped are exposed to oil. The significant characteristic of oil sealed rotary vane (OSRV) pumps is the use of oil as a sealant, which is not found in ‘dry’ pumps. 

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Four ways of finding vacuum leaks using helium

Of course, this is an extreme case, but as vacuum pressures get lower and lower, even the most seemingly secure and pristine of systems will soon show themselves to be less than tight. Tightness (or “the absence of leaks”) is required for numerous reasons, including: to ensure and maintain the pressure/vacuum; for product safety; for environmental standards; and for process efficiency. There are two aspects of leak technology worth examining: leak detection and leak measurement. 

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Interview with Dr Saim Memon

We are interviewing one of our contributors, Dr Saim Memon, Senior Lecturer in Electrical Engineering at London South Bank University.

With over eight years of experience in the field of vacuum science research, we discuss his background, interest and work in the industry as well as how vacuum science has evolved over the years.

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Introduction to the fundamentals of vacuum science & technology

Described as ‘a space in which the pressure is below surrounding atmospheric pressure’, vacuum science is a subject and concept that has stimulated many great minds for millennia.

The origins of vacuum science can be traced back to as early as the 4th century when Aristotle stated that ‘nature abhors a vacuum’. 

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ITER: Clean and sustainable energy (using vacuum vessels)

Energy from nuclear fusion must surely be the answer to the majority of the world’s on-going energy headaches. The fuels used in nuclear fusion are plentiful and readily available across the world. There are absolutely no greenhouse gas emissions and - unlike even the most up-to-date nuclear energy programmes - not only are there no long-term radioactive wastes to deal with, but the reactors cannot “run out of control”.

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