Force-Balanced Absolute-Pressure Sensor Principle


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A bellows sensor can accurately measure much lower pressures than a bourdon tube. Absolute pressure ranges as low as 0 -100 mm Hg and gauge pressure ranges as low as 0 -5 inches H2O (0 -125 mm H 2 0) are available. Bellows elements can measure absolute pressure, gauge pressure, vacuum, or differential pressure.