Basicprinciplesofvacuumtechnology,briefoverview …

Subjecttochange1 Internet: principles of vacuum technology, brief overviewIntroductionBasic principles of vacuum technologyWhat is a vacuum?Vacuum rangesUnits of measurementA vacuum is a space entirely devoid ofmatter ( absolute vacuum ).In practice we talk about a vacuumwhen the air pressure in a space liesbelow atmospheric [pa]P[mbar]There are a large number of nationaland international units ofmeasurement. The most commonlyused units are Pascal (Pa) and bar100Pa =1hPa1hPa =1mbar1 mbar = barThe vacuum level is often expressedas a % value. However, these arealways relative = Rough vacuumFV = Medium vacuumHV = High vacuumUHV = Ultra-high vacuumWhat is a vacuum used for?Measuring the pressure or vacuumAtmospheric pressureThe vacuum plays a vital role inresearch in the fields of chemistry,biology and is also indispensable in manyindustrial the rough vacuum range, thepressure gauges used are mainlymechanical, but some digital pressuregauges are also the high and ultra-high vacuumrange, highly sensitive pressuregauges are [km]p[hPa]1 Mount Everest2 Festo3 Sea levelUnderstanding vacuumVacuum specification optionsEffects of changes on per m3of air at one barair exert pressure or force on thewalls of a

Subjecttochange Internet:www.festo.com/catalogue/... 1 Basicprinciplesofvacuumtechnology,briefoverview Introduction Basicprinciplesofvacuumtechnology

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