Method and apparatus for correcting for performance degrading fa

Details Method and apparatus for correcting for performance degrading fa Method and apparatus for correcting for performance degrading fa

1996-03-11

1999-07-20

Wu, Daniel J.

Communications: electrical

Condition responsive indicating system

Specific condition

73861356, G08B 2100

Patent

active

059260963

ABSTRACT:
Drivers and sensors in Coriolis-type mass flowmeters are used to monitor and predict flowmeter failure modes due to mechanical deterioration during meter operation. The relative values of two different signals, e.g, resonant frequencies, associated with Coriolis flow conduit motion are monitored as an indicator of excessive mechanical deterioration and also used to compensate for shifts in meter factor. The noise spectrum of the sensor output is also monitored to indicate mechanical fatigue of the tubes. Energy loss in the vibrating tubes is monitored as an indication of fatigue to determine tube failure by determining the drive power needed to maintain constant velocity oscillation or measuring the decay rate of the drive signal when driver power is interrupted.

REFERENCES:
patent: 4879911 (1989-11-01), Zolock
patent: 4891991 (1990-01-01), Mattar et al.
patent: 4911006 (1990-03-01), Hagarten et al.
patent: 4911020 (1990-03-01), Thompson
patent: 4934195 (1990-06-01), Hussain
patent: 4934196 (1990-06-01), Romano
patent: 4996871 (1991-03-01), Romano
patent: 5027662 (1991-07-01), Titlow et al.
patent: 5050439 (1991-09-01), Thompson
patent: 5054326 (1991-10-01), Mattar
patent: 5271281 (1993-12-01), Natter et al.
patent: 5343764 (1994-09-01), Mattar et al.
patent: 5400653 (1995-03-01), Kalotay
patent: 5497665 (1996-03-01), Cage et al.
patent: 5497666 (1996-03-01), Patten et sl.
patent: 5555190 (1996-09-01), Derby et al.
patent: 5594180 (1997-01-01), Carpenter et al.

Affiliated with

Also associated with

Rating

Method and apparatus for correcting for performance degrading fa does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for correcting for performance degrading fa, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for correcting for performance degrading fa will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1325245