Coriolis mass flowmeter determining state of wear of the pipe

Details Coriolis mass flowmeter determining state of wear of the pipe Coriolis mass flowmeter determining state of wear of the pipe

2008-05-20

2008-05-20

Patel, Harshad (Department: 2855)

Measuring and testing

Volume or rate of flow

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

Reexamination Certificate

active

10581632

ABSTRACT:
The invention concerns a Coriolis mass flowmeter comprising at least one conduit (9) traversed by the mass, which produces mechanical vibrations under the effect of an excitation unit (8) and acts as an oscillating element, whereof the oscillating behaviour which varies based on the mass flow rate is sensed by at least one sensor (15, 16) to determine the mass flow. The invention aims at determining the degree of wear of the conduit (9). Therefor, the excitation unit (8) applies a single excitation pulse to the conduit (9), whereof the oscillatory response is sensed by the sensor (15; 16). The invention is characterized in that an evaluating unit (10) arranged downstream calculates the initial dampening constant recorded when the conduit (9) was new.

REFERENCES:
patent: 5454267 (1995-10-01), Moreau et al.
patent: 5926096 (1999-07-01), Mattar et al.
patent: 6601005 (2003-07-01), Eryurek et al.
patent: 2005/0011278 (2005-01-01), Brown et al.
patent: 2007/0017274 (2007-01-01), Wheeler et al.

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