Barometers for aerospace applications measure absolute atmospheric pressure using aneroid capsule assemblies, piezoresistive MEMS transducers, or vibrating-cylinder sensing elements, with outputs referenced to QNH, QFE, or QNE datums; manufactured to ARINC and DO-160 environmental standards, they incorporate temperature-compensated signal conditioning and are typically housed in hermetically sealed, corrosion-resistant enclosures qualified to relevant TSO requirements.
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