Project Name: Beijing normal university, Ultra high vacuum
molecular beam epitaxy thin film preparation system project
Vacuum pumps provide high vacuum
levels at moderate volume flow rates--these are used for applications such as drying, degassing, extrusion calibration, and vacuum forming.
1) Possible to measure a wide range (atmospheric pressure to high vacuum
range; 5 x 10-8Pa)
The pump is suitable in industry and laboratories for production of medium and high vacuum
Swedish technology group Nederman Holding AB said on Monday (7 January) that it has acquired the high vacuum
products manufacturer Toredal Verkstad AB.
John Bullough, Nederman UK's technical manager, comments: "The L-shape of the new facility provides a much longer (20 metres compared with eight metres) run of ducting for our high vacuum
extraction system demonstrations.
The completely inert material will not outgas in ultra high vacuum
and is unreactive with most molten metals, salts and acids.
These motors offer velocities from 1 [micro]m/sec to 250mm/sec, with current load ratings from l5mA to lA, and are offered in two vacuum grad es - high vacuum
compatibility down to [10.
They are particularly well-suited for leak detection, mass spectrometers, electron microscopes and high vacuum
chambers in industrial, instrumentation and research and development applications.
4) it follows that the apparatus should consist of 2 gloveboxes, One of which must be connected directly to a high vacuum
It does not need high vacuum
to measure tiny concentrations of helium accurately.
18 -- Acmevac introduces Direct Drive; the oil sealed rotary high vacuum