Magnetic suspended compound molecular turbo pump

[Screwdriver]

Might be of interested to someone on here....

http://www.ebay.co.uk/itm/TG3213EM-...997629?hash=item2ed6f6da7d:g:7MkAAOSw54xUW-rt

 

[500e]

Should have mentioned it last week

 

[Screwdriver]

One of those things that sits at the back of the workshop until you really need one....

 

[Robotstar5]

Over £1000 delivery, it would be cheaper to fly out and collect

 

[voipio]

Good for high, and ultra-high vacuum specialised applications. No use for getting 1,000 bhp out of a Ford Fiesta.

 

[colnerov]

I always thought vacuum was vacuum, I didn't know there was different types.

 

[Screwdriver]

I always thought vacuum was vacuum, I didn't know there was different types.

There's no such thing as nothing.

 

[Mark Harrison]

I use lots of those in my work , part of mass specs. I know they are used in sputter coating, but what else?

 

[500e]

Aerospace, Police or medical, Mark

 

[rockweasel]

I use lots of those in my work , part of mass specs. I know they are used in sputter coating, but what else?

 

[pedrobedro]

I always thought vacuum was vacuum, I didn't know there was different types.

Dyson, Vax, Hoover, Hitachi and Henry

 

[winchman]

Used in Food / pharma so they have no seal to leak or contaminate the product

 

[Mark Harrison]

Actually not the far away it is pharma that pays the bills. We don't use anything that fancy in production , if we can avoid it. Food sector has more fish to splash about. ( Not that Pharma is penniless...)

 

[voipio]

There would be very few conveniences that are accepted as a normal part of modern living without high vacuum - freeze drying, mass spectrometry, semiconductor manufacturing, thin film coatings for specialised sensors, optical surfaces (spectacles, camera lenses), hard disk platters, and other applications, electron microscopy, ion microscopy, specialised welding (TIG-like) for very high purity welds, valve (electronic) and light bulb manufacturing (declining in volumes, but still important), surface science research, where ultra high surface purity needs to be maintained, atomic physics research, the Large Hadron Collider.....

Design and manufacture of high vacuum systems is quite an art, or rather, there is a large detailed body of scientific knowledge that informs the design choices. Most materials that one might think of as being very good for sealing things, are actually very poorly suited for high vacuum systems. Teflon, various rubbers, polythene, are all bad. High purity copper seals are good.

Screw threaded parts, and enclosed spaces generally, are best avoided inside high vacuum systems, MIG welding and stick welding are unsuitable, and surface finish and cleanliness are paramount.

The vacuum immediately behind the International Space Station (in terms of direction of its motion) is considerably higher than the vacuum in the general vicinity of the ISS.

In Ultra High Vacuum systems, i.e. at pressures of around 10 to the power minus 12 of an atmosphere, the mean free path of a gas molecule is 40km. Think Large Hadron Collider. You don't want your high energy particle beam interacting with unwanted gas molecules, as this would mess with the science and defeat the object of the exercise.