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Vacuum

Reference data and engineering information about vacuum for miscellaneous applications.

vacuum

Overview

Engineering reference data for Vacuum in miscellaneous.

Key Formulas

Unit Conversion

y=xky = x \cdot k

Multiply by conversion factor.

Linear Interpolation

y=y1+(xx1)(y2y1)x2x1y = y_1 + \frac{(x - x_1)(y_2 - y_1)}{x_2 - x_1}

Estimate between two known points.

Percentage

p=partwhole×100%p = \frac{\text{part}}{\text{whole}} \times 100\%

Part as fraction of whole.

Variables

SymbolDescriptionUnit
xxInput value
yyOutput value
kkConversion factor

Vacuum Unit Conversion Table

4 rows
Common vacuum levels and their corresponding absolute pressures in different units.
Vacuum Level(%)
Pressure(torr)
Pressure(psia)
Pressure(in Hg abs)
Pressure(kPa abs)
076014.729.92101.4
503807.31550.8
99.910.019340.039371.3
1000000

Source: engineeringtoolbox.com

Vacuum Ranges

Vacuum levels are categorized into distinct pressure ranges:

  • Atmospheric Pressure: 760 torr
  • Low Vacuum: 760 to 25 torr
  • Medium Vacuum: 25 to 10310^{-3} torr
  • High Vacuum: 10310^{-3} to 10910^{-9} torr
  • Ultra-High Vacuum: 10910^{-9} to 101210^{-12} torr
  • Extremely High Vacuum: < 101210^{-12} torr
  • Perfect Vacuum: 0 torr

Interactive Charts

air pressure versus vacuum

References