Main Units for Measuring Vacuum Pressure
The main units used to measure vacuum pressure are kilopascals (kPa), Torr, millimeters of mercury (mmHg), millibar (mbar), and atmosphere (atm).
1. Comparison of Atmospheric Pressure and Common Units
The atmospheric pressure we live under can be expressed as follows:
1 atm
101 kPa
760 Torr
760 mmHg
1013 mbar
2. Example of Vacuum Pressure Unit Conversion
To understand the performance of a vacuum pump, it’s important to know how to convert between units. For example, let’s assume that the maximum vacuum level of the DN Series pump is as follows:
Measured in absolute pressure (based on 0 reference):
0.06 atm
6.66 kPa
50 Torr
50 mmHg
66.6 mbar
Measured in gauge pressure (based on atmospheric reference):
0.93 atm
94.65 kPa
710 Torr
710 mmHg
946.5 mbar
3. Check the Exact Vacuum Level When Choosing a Vacuum Pump!
There are various units to express vacuum levels, but an accurate understanding of vacuum pressure is essential. Incorrect unit conversion can make it difficult to select the right vacuum pump for your application.
If you need assistance choosing a vacuum pump, feel free to contact us anytime. Thank you!
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