Data processing: measuring – calibrating – or testing – Measurement system in a specific environment – Mechanical measurement system
Reexamination Certificate
2006-04-11
2006-04-11
Shah, Kamini (Department: 2142)
Data processing: measuring, calibrating, or testing
Measurement system in a specific environment
Mechanical measurement system
C702S051000, C073S861270
Reexamination Certificate
active
07027936
ABSTRACT:
In a method for measuring flow by means of an ultra sonic flow meter, an ultra sonic signal is transmitted in an upstream and a downstream direction. This is measured upon receipt of an ultra sonic signal and the measurement stopped at a stopping point. A first series of transmissions is made, and the starting time of each transmission is incremented or decremented until a time difference between the upstream and downstream signal is inside a reference band. Flow is then calculated in accordance with the time measurements.
REFERENCES:
patent: 6584861 (2003-07-01), Jespersen
patent: 6772643 (2004-08-01), Eguchi et al.
patent: 2002-318145 (2001-04-01), None
Brun Esben Groenborg
Jespersen Lars
Krusborg Joergen
Ploug-Soerensen Lars
McCormick Paulding & Huber LLP
Shah Kamini
Siemens Flow Instruments A/S
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