Method and device for acoustic measurement of the specific...

Details Method and device for acoustic measurement of the specific... Method and device for acoustic measurement of the specific...

2011-02-15

2011-02-15

Lau, Tung S. (Department: 2857)

Data processing: measuring, calibrating, or testing

Measurement system in a specific environment

Chemical analysis

Reexamination Certificate

active

07890269

ABSTRACT:
There is described a method and device for measurement of the specific density of a gaseous or liquid medium, whereby a pulsed acoustic signal is injected into the measured medium by means of a transmitting transducer, the signal is detected by a receiver transducer, after passing over a measured path, whereupon the acoustic impedance Z is automatically determined in an analytical device by comparison of a curve for the currently measured received signal with reference curves, predetermined for various values of the acoustic impedances stored for each value of the acoustic impedance, whereby the propagation speed c of the acoustic signal in the medium is determined and the density p of the medium is calculated as the quotient from the acoustic impedance Z and the propagation speed c. The method is preferably of application to an ultrasound mass flow measurement device and hence has the advantage that no additional density sensor is required, nevertheless permitting a robust and precise measurement of density.

REFERENCES:
patent: 5339282 (1994-08-01), Kuhn et al.
patent: 5671136 (1997-09-01), Willhoit, Jr.
patent: 6208237 (2001-03-01), Saiki et al.
patent: 6209387 (2001-04-01), Savidge
patent: 6538958 (2003-03-01), Blankinship et al.
patent: 196 11 233 (1997-09-01), None
patent: 0 797 105 (1997-09-01), None
Puttmer et al., “Ultraschallsensoren für die Prozesstechnik”, Automatisierungstechnische Praxis, 2004, pp. 51-59, vol. 46, Issue 1.

Affiliated with

Also associated with

Rating

Method and device for acoustic measurement of the specific... 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 device for acoustic measurement of the specific..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and device for acoustic measurement of the specific... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2643180