1. It consists of two terms which are absolute pressure and gravity head. 2. However, the boiling point of water depends on the absolute pressure inside the pipe. 3. For example, the absolute pressure compared to vacuum is: 4. Torr and micron usually indicates an absolute pressure , while inHg usually indicates a gauge pressure. 5. The absolute pressure in the tire is essentially unchanged. 6. The air density is calculated using the absolute pressure and temperature in the intake manifold. 7. The situation changes when extreme vacuum pressures are measured; absolute pressures are typically used instead. 8. When the absolute pressure of the vacuum is decreased further, the flow speed will not increase. 9. To produce an absolute pressure sensor the manufacturer will seal a high vacuum behind the sensing diaphragm. 10. The pressure shown on a gauge would be the absolute pressure less atmospheric pressure, or 187.1 psi .)
