Vacuum protected Devices

Insulation vacuum allows not only a thermal insulation but also protects surfaces from corrosion (oxidation), can avoid arcing and shortcuts, or helps to get defined (clean) conditions. Under Vacuum the number of molecules is significantly reduced, many liquid/condensed substances evaporate and can be pumped away once the pressure is below their partial pressure. As the number of reactive molecules is reduced, you achieve nearly perfect and defined conditions to refill with another medium (Lamp manufacturing), in case of high power applications, the reduced number of molecules reduces the conductance of the medium (as fewer molecules get charged / ionized), so an increase in electrical insulation in a smaller package, in addition corrosion, is minimized (Vacuum interrupters).

In manufacturing and R&D the SRG can be used to measure the pressure conditions even after the Vacuum vessel is closed, if using a glass sensor the tube with the ball can be easily removed and disposed of after production. This might also be usful for the development of getters, which is commonly used to keep static vacuums more stable.