公开(公告)号：US20100005887A1

公开(公告)日：2010-01-14

申请号：US12499512

申请日：2009-07-08

申请人： Jörg GEBHARDT ,  René Friedrichs ,  Beat Kramer ,  Frank Kassubek ,  Steffen Keller

发明人： Jörg GEBHARDT ,  René Friedrichs ,  Beat Kramer ,  Frank Kassubek ,  Steffen Keller

IPC分类号： G01H17/00

CPC分类号： G01F1/849 ,  G01F1/8436

摘要： A vibration-type measuring device includes an exciter arrangement which exerts a time-dependent force with at least one sinusoidal component at an adjustable excitation frequency on a measuring tube, through which a medium can flow, and causes the measuring tube to oscillate. The measuring device includes first and second sensors which are fitted to the measuring tube at different locations. The first and second sensors output first and second measurement signals, respectively. The measuring device includes an evaluation unit which determines a first phase shift between the first and second measurement signals and uses the determined phase shift to determine a measurement variable of the medium. The measuring device includes a phase comparator, which determines a second phase shift between the force and the average value of the first and second measurement signals, and a frequency generator which sets the excitation frequency on the basis of the second phase shift.

摘要翻译： 振动型测量装置包括激励器装置，其在测量管上以可调节的激发频率施加至少一个正弦分量的时间依赖力，介质可以通过该激励器流动，并使测量管振荡。 测量装置包括在不同位置安装到测量管的第一和第二传感器。 第一和第二传感器分别输出第一和第二测量信号。 测量装置包括评估单元，其确定第一和第二测量信号之间的第一相移，并使用所确定的相移来确定介质的测量变量。 测量装置包括相位比较器，其确定第一和第二测量信号的力和平均值之间的第二相移;以及频率发生器，其基于第二相移来设定激励频率。