To calculate gauge pressure, you need to know both the absolute and atmospheric pressures. Absolute pressure is the total force exerted by a fluid, including air molecules colliding with surfaces, ...

Gauge Pressure Gauge pressure (P g) or relative pressure can be explained as the measured difference between pressure measured and the local atmosphere. The gauge pressure can be a negative value if ...

For example, a tire pressure gauge reads zero when merely held in your hand; it does not read or register the 15 psi of atmospheric pressure. But, connect it properly to the tire and it will ...

Figure 6. Gauge pressure of a process increases as atmospheric pressure decreases. According to the 2 nd Law of Thermodynamics, fluids move from high pressure areas to low pressure areas. When the ...

In this paper, the design of an interface circuit for exploiting the transient response of a Pirani gauge sensor for beyond atmospheric pressure measurement is proposed. Based on the fact that ...