Traps, Baffles & Filters

www.semiconductor.net | Dec 1, 1999

Foreline Traps: Foreline traps are devices placed between a 'gas transfer' pump and a mechanical pump in a high-vacuum system. Of the three distinct types of foreline traps, the most common stops oil vapor migration from the mechanical pump to the high-vacuum pump.

http://www.semiconductor.net/article/CA170192.html

CR4 - Blog: Great Engineers & Scientists

©2005-2008 GlobalSpec. All rights reserved. GlobalSpec, the GlobalSpec logo, SpecSearch, The Engineering Search Engine and The Engineering Web are registered trademarks of GlobalSpec, Inc. CR4 and Conference Room 4 are registered trademarks of GlobalSpec, Inc.

http://cr4.globalspec.com/blog/browse/3/Great-Engineers-Scientists?tn=word%20processors

Small Changes Boost Vacuum Productivity

www.semiconductor.net | Oct 1, 1999

Technical Overview:Simple improvements, including some seemingly non-value added ones, can dramatically improve OEE.

http://www.semiconductor.net/article/CA169354.html

RS33LT

www.semiconductor.net | Mar 1, 1998

RS33LT is arecirculating cooler for use in reaction vessels, lasers, semiconductor equipment, rotary evaporators, diffusion pumps, electronmicroscopes and viscosity testing equipment. The cooler offers a temperature range of-40-75degC, stable temperature

http://www.semiconductor.net/article/CA163041.html

Varian, Inc. Solutions for Mass Spectrometry & Analytical Instrumentation

As analytical instrumentation becomes increasingly sophisticated and precise, Varian, Inc. continues to create innovative, dedicated vacuum pumping solutions for mass spectrometry, time-of-flight, and gas analysis instruments.

http://www.varianinc.com/cgi-bin/nav?products/vacuum/markets/massspec&cid=KJJOMJIMFQ

A S Scientific Products Ltd - Catalogue - Page 16 - Kellysearch.co.uk B2B Online Product Catalogues

www.kellysearch.co.uk

SERVICING ADVANTAGES • The line is virtually maintenance free (no crumbling insulation to be replaced every year or so). • No need for continuous evacuation and therefore no vacuum pump maintenance. CONSIDERATIONS TO BE TAKEN INTO ACCOUNT There are, however, other factors to be taken into account when considering using flexible rather than rigid lines: I For a given line diameter the heat loss will be greater with a flexible line. I Higher driving pressures (typically 30% greater) are required to overcome the additional frictional flow losses in a flexible line. STANDARD SIZE RANGE Spool lengths up to 20 metres Line bore size (mm) 10 13 20 25 Line outer diameter (mm) 55 67 85 95 Typical heat leakage W/m 1.00 1.25 1.60 2.50 Typical flow rates Kg/h 150 300 900 2500 CONSTRUCTION AND TESTING • Superinsulation is applied to clean factory conditions. • Line sections are evacuated using large diffusion pumps fitted with liquid nitrogen cold

http://www.kellysearch.co.uk/CatalogView.aspx?c=82007403&cn=1&b=KBD&l=82007403&cc=gb&v=0&i=16

Process Control | Signal Processing Tools

Implementing a reliable and rugged automatic control system for a vacuum chamber, which operates continuously for 24hours a day, spanning over several days. This also involved interfacing a data acquisition and monitoring system for the test specimen placed inside the chamber.

http://www.captronicsystems.com/vacuumchamber.htm

LOY INSTRUMENT LINE CARD

Pressure, Temperature, Flow Measurement & Control Products (Love, Mercoid, W. E.

http://www.loy-instrument.com/line_card.htm