Gauge, Absolute, and Differential Pressure Measurement
• Absolute Pressure: Base reference for pressure measurements, used in high-accuracy vacuums, distillation vacuum columns, and tank leakage checks.
• Gauge Pressure: Difference between atmospheric pressure and absolute pressure, used in laboratories, instruments, and process tanks.
• Differential Pressure: Difference in pressure between two points of pressure, used in level measurement, overpressure measurement, flow and filtration, and leak detection.
• Units for Measuring Pressure: BAR, PSI, PA, Torr, InHg, and InH2O.
• Absolute Pressure Gauges: Sealed instruments measuring actual pressure applied regardless of atmospheric pressure change.
• Differential Pressure Measurement: Measures pressure drop across a system.