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公开(公告)号:US06823716B2
公开(公告)日:2004-11-30
申请号:US10406518
申请日:2003-04-03
IPC分类号: G01N2918
CPC分类号: G01H5/00 , G01N29/024 , G01N29/222 , G01N29/449 , G01N2291/02818 , G01N2291/02872 , G01N2291/02881
摘要: A sensor for measuring the speed of sound in a gas. The sensor has a helical coil, through which the gas flows before entering an inner chamber. Flow through the coil brings the gas into thermal equilibrium with the test chamber body. After the gas enters the chamber, a transducer produces an ultrasonic pulse, which is reflected from each of two faces of a target. The time difference between the two reflected signals is used to determine the speed of sound in the gas.
摘要翻译: 用于测量气体中的声速的传感器。 传感器具有螺旋线圈,气体在进入内腔之前流过该螺旋线圈。 通过线圈的流动使气体与试验箱体热平衡。 在气体进入腔室之后,换能器产生从目标的两个面中的每个面反射的超声波脉冲。 两个反射信号之间的时差用于确定气体中的声速。