Coriolis mass flow sensor

Details Coriolis mass flow sensor Coriolis mass flow sensor

1997-03-05

1998-12-29

Biegel, Ronald L.

Measuring and testing

Volume or rate of flow

Mass flow by imparting angular or transverse momentum to the...

73861354, G01F 100

Patent

active

058544305

ABSTRACT:
This Coriolis mass flow sensor (40, 50, 60, 70) can be inserted in a pipeline by means of an inlet-side and an outlet-side connecting element (402, 403; 502, 503; 602, 603; 702, 703). An oscillating system comprises at least one measuring tube (401; 501; 601; 701, 701'), through which a fluid to be measured flows in operation. The oscillations of the oscillating system are excited by means of an electromagnetic exciter arrangement (1, 2, 3, 4, 10) which has at least one low-resistance exciter coil (15; 251, 252; 35) fed from an exciter current source (6, 7), a core (13, 23, 33, 43, 53) containing a permanent magnet (12; 221, 222; 32; 42; 512, 522), and an armature (14, 24, 34, 44, 54, 104). The oscillating system can also be excited by interference vibrations which contain a frequency which is the same as the resonant frequency of the oscillating system, such that the measurement result is corrupted. To avoid this a capacitor is coupled to the coil in the manner of a parallel circuit and its capacitance (C) is selected as a function of the inductance (L) of the coil such that the resonant frequency of the electrical parallel resonant circuit which is formed by the capacitor and the coil is approximately equal to the mechanical resonant frequency of the oscillating system. A sensor (406, 506, 606, 706) for the inlet-side oscillations and a sensor (407, 507, 607, 707) for the outlet-side oscillations are arranged with the same distance between the center of the measuring tube and the inlet-side and the outlet-side connecting element, respectively.

REFERENCES:
patent: 4096745 (1978-06-01), Rivkin et al.
patent: 4680974 (1987-07-01), Simonsen et al.
patent: 4747312 (1988-05-01), Herzl
patent: 4793191 (1988-12-01), Flecken et al.
patent: 4801897 (1989-01-01), Flecken
patent: 5218873 (1993-06-01), Lang
patent: 5230254 (1993-07-01), Craft
patent: 5386732 (1995-02-01), Scotto
patent: 5398554 (1995-03-01), Ogawa et al.
patent: 5488870 (1996-02-01), Yoshimura et al.
patent: 5531126 (1996-07-01), Drahm
patent: 5551307 (1996-09-01), Kane et al.

Affiliated with

Also associated with

Rating

Coriolis mass flow sensor does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Coriolis mass flow sensor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Coriolis mass flow sensor will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1426141