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nEXT Turbo Pumps

nEXT Turbo Pumps
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nEXT TURBOMOLECULAR PUMPS Giving you a clear edge

EDWARDS THE PARTNER OF CHOICE Edwards is a world leader in the design, technology and manufacture of vacuum pumps with over 95 years’ history and more than 75 years’ manufacturing experience. Edwards believes in delivering results that bring value to our customers by using our breadth of industry experience to identify and apply solutions to your problems. Using the most innovative and up-to-date modelling techniques, we can optimise the pumping configuration for customers to provide a system design giving the maximum performance in the most reliable and cost-effective way

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PERFORMANCE YOU CAN RELY ON Edwards nEXT is the ultimate experience in turbomolecular pumps nEXT turbomolecular pumps are built on decades of experience and are based on our tried and trusted EXT and STP ranges. nEXT pumps offer superior performance, reliability and end user serviceablity, setting the benchmark for scientific turbomolecular pumps. Exceptional pumping speeds and compression ratios Superior Performance Huge install base of turbo pumps Proven reliability for peace of mind Bespoke options available for OEMs Customised solutions Intelligent controls Flexibility of operation End...

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nEXT turbomolecular pumps sectional view The compact design allows for close pitch positioning in multiple pump installations. Backwards compatible with existing EXT and DX ranges offering superior performance in a smaller space envelope. Compatible with Edwards TIC Controllers. 6

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Multiple drag stages for higher compression ratios and greater backing pressure tolerance Sensorless drive for high efficiency and compactness with reduced stray magnetic fields Patented bearing suspension system minimises noise and vibration transmitted to vacuum system User replaceable oil cartridge for a speedy interim service Regenerative stage ‘Boost’ port option for reduced pump numbers in differentially pumped systems for maximum system rationalisation Permanent magnet upper bearing for a hydrocarbon free vacuum, reduced vibration and minimum wear Advanced simulation tool derived...

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Advanced technology nEXT has been designed to combine all the latest technological advances in turbo pumps with some new thinking in design for manufacture, delivering a truly class leading product to market. The nEXT platform brings a high level of modularity to offer maximum flexibility for customer application and requirements. Each pump is available in two different internal configurations to offer differing performance. nEXT is available in three sizes Duplex “D” variants with both turbomolecular and drag stages for improved tolerance to higher backing line pressures. Triplex “T”...

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Boost technology The “T” variants of nEXT employ a unique viscous pumping stage which can be used to ‘boost’ the performance of the backing pump. This offers a much simplified vacuum solution with greatly improved pumping speeds and system power reduction. The example in the image to the right shows how the boost ports can be used to replace a primary pump on a differentially pumped system. To take maximum advantage of boost technology, please contact Edwards. Service New technologies employed in nEXT have enabled the pumps to be serviced by the end user in the field. An interim oil...

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Inlet pumping speed (l/s) Inlet flange H2 Interstage pumping speed (l/s) Backing/interstage/boost ports Vent/purge port Critical backing pressure (D) (mbar) Critical backing pressure (T) (mbar) Maximum continuous inlet flow (nitrogen, sccm) Water cooling (40°C ambient) Forced air cooling (35°C ambient) Natural convection (30°C ambient) Maximum system flange temperature during bakeout (CF only) Water cooled/forced air cooled Maximum continuous backing pressure (mbar) Water cooling (40°C ambient) Forced air cooling (35°C ambient) Natural convection (30°C ambient) Recommended backing pump*...

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Performance Curves nEXT240D Pumping Speed 300 250 200 Nitrogen Argon Helium Hydrogen Inlet Pressure (mbar) Helium Hydrogen Inlet Pressure (mbar) 1.00E-04 1.00E-03 1.00E-02 Inlet Pressure (mbar)

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Envelope Vent Port 1/8” BSP (Interstage) Electrical Drive Unit Body Purge Port 1/8” BSP 4 holes M8 x 12 deep base mounting holes and fan mountings (supplied with feet fitted but not shown)

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Controllers and accessories The TIC (Turbo and Instrument Controller) automatically recognises and supports one turbomolecular pump from the nEXT range, plus three Edwards active gauges. Cooling and vent valve support is provided directly from the controller. Backing pump power is provided for a compact 24V diaphragm pump (on 200W versions only), or where greater pumping speeds are required, mains backing pumps (up to RV12) may be controlled via an optional relay box. nXDS and large XDS pumps can be controlled directly via the backing pump connector on a TIC 200. The relay box can also be...

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GLOBAL CONTACTS Taiwan R.O.C. Jhunan Town +886 3758 1000 Publication Number: B80000S95 issue C © Edwards Limited 2015. All rights reserved. Edwards and the Edwards logo are trade marks of Edwards Limited. Whilst we make every effort to ensure that we accurately describe our products and services, we give no warranty as to the accuracy or completeness of any information provided in this brochure.

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