A Brief Explanation of Vacuum and Concept of Creating a Constant Vacuum Source

A vacuum is a space, or area that contains less pressure than the surrounding area. The surrounding area generally has the pressure of atmosphere depending on the elevation. I use a constant of 14.7 PSI as atmosphere. Usually, the vacuum is contained within a structure, like a tank. Common units associated with vacuum include: inches of mercury (inches of Hg), millimeters of mercury (mm of Hg), PSI (Pounds per Square Inch), Torr (a torr of 1 is standard atmospheric pressure), Pascals or Kilopascals (KPa). In the constant vacuum source, a range of inches of Hg is sought to be maintained, only to use the motor to pump vacuum when needed. A pressure sensor will be used to determine the amount of pressure that is in the tank. A vacuum pump is used to provide the vacuum in the tank, and a tank will be used to hold the vacuum.