Ambient pressure is the pressure of surrounding medium in contact with an object. Common units include kilopascals (kPa), pounds per square inch (psi), and standard atmospheres (atm). One bar equals approximately 100 kPa at sea level
Principle states that buoyant force equals weight of displaced fluid. Discovered by Archimedes of Syracuse in 3rd century BC. Principle relates to fluid pressure differences at different depths
Hydrostatic pressure is generated by liquid weight above a measurement point. Liquid height is directly proportional to hydrostatic pressure. Pressure depends on liquid density and local gravity
SPD310/SPD360 monitors air ducts and fans with 0-10Vdc signal. SPD360 model includes LCD display showing Pa readings. SPD310/SPD360 available in 0-1000 Pa range with ±0.4% FS accuracy
Pressure is force per unit area, calculated as P = F/A. Pressure is inversely proportional to surface area. SI unit is Pascal (Pa), with 1 N/m² equal to 1 Pa
Manometer measures fluid pressure by comparing it with standard mercury column. Pressure is typically expressed in millimeters of mercury. Two main categories: simple manometer and differential manometer