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    • 1. 发明授权
    • Vibration type density meter
    • 振动式密度计
    • US4429564A
    • 1984-02-07
    • US330175
    • 1981-12-14
    • Kyoichi IkedaMotoyoshi AndoKinji Harada
    • Kyoichi IkedaMotoyoshi AndoKinji Harada
    • G01N9/00
    • G01N9/002
    • A vibration type density meter includes a mechanical oscillator or resonator having a resonance frequency variable with the density of a specimen fluid around the oscillator. The resonator is of a cylindrical configuration with flanges at the ends thereof, at least one of the ends being open for introducing specimen fluid into the resonator. The meter also includes means for exciting the resonator, means for detecting oscillations of the cylindrical resonator, a cover coupled to the flanges of the resonator in surrounding relation to the latter, and circuit means for processing a frequency signal from the oscillation detecting means, and by arithmetic operations derive and display the density of the specimen fluid being measured.
    • 振动型密度计包括机械振荡器或谐振器,其具有随振荡器周围的样本流体的密度变化的共振频率。 谐振器具有在其端部具有凸缘的圆柱形构造,至少一个端部是开放的,以将样本流体引入谐振器。 该仪表还包括用于激励谐振器的装置,用于检测圆柱形谐振器的振荡的装置,与谐振器的凸缘耦合到其周围的盖的盖,以及用于处理来自振荡检测装置的频率信号的电路装置,以及 通过算术运算得出和显示被测流体的密度。