Unverified80% confidenceTradeoffTime unknown
精度权衡：NDIR家用机标称精度多为±50ppm±5%读数，工业级可达±30ppm±3%；家用监测通风时机不需要实验室级精度，±50ppm±5%完全够用，为3%精度多花的钱不值得。
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UnverifiedNDIR传感器越精度高越贵且响应稍慢，普通居家±(50ppm+读数3%)精度足够；实验室或科研才需±30ppm级，日常追求高精度不划算84% similarUnverified精度等级看标注误差：数显表通常±1psi或±2%，机械指针表约±3psi。日常补气用±2psi够用；追求精准调校胎压(如赛道/越野放气)建议选±1psi以内的数显表78% similarUnverified计量精度选1级（误差±1%）足够家用与自用监测；0.5S级（±0.5%）仅在需要精确分时结算或大功率商业计费时才有意义，价格显著更高77% similarUnverified指针式读数精度约±3psi，对需要精确到±1psi以内的用户（如性能车调校胎压）不够用，应选数显表77% similarUnverified能耗监测精度分档：普通计量款仅显示实时功率±5%，需精确计费应选带电流校准的高精度型号，误差可控制在±1%以内75% similar
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