Sponsored Topics. Lawrenceburg is a city in Lawrence County, Tennessee, United States. The population was 10,796 at the 2000 census. It is the county seat of Lawrence County. Lawrenceburg is southwest of Nashville and named after James Lawrence.
vacuum pressure = absolute pressure inside the vessel - absolute pressure outside the vessel, when the outside is greater than the inside. Vacuum pressure is the amount of pressure that inside the container is less than outside. Since the damage is done by a difference of pressure, the vacuum pressure means that the force is pointing to inside the container. But because the hard vacuum at 0 psi, and the outside is 14.7 psi, the vacuum can not be greater than 14.7 psi.
In a barometer, the Bourdon tube is sealed at both ends and the absolute pressure of the ambient atmosphere is sensed. The Bourdon pressure gauge measures pressure relative to atmospheric pressure, that is, they measure presure directly relative to the surrounding atmospherice pressure. For example, Albuquerque New Mexico at our facility is at 5,000 feet above sea level with an atmospherice pressure of 630 mmHg. A bourdon gauge calibrated at sea level (760 mmHg) would read about 5 inHg of vacuum at our location.