Measuring and testing – Fluid pressure gauge
Reexamination Certificate
2006-09-05
2006-09-05
Lefkowitz, Edward (Department: 2855)
Measuring and testing
Fluid pressure gauge
36
Reexamination Certificate
active
07100450
ABSTRACT:
The invention concerns a method for correction with temperature in the pressure determination of a pressure gauge, comprising:measuring simultaneously with said gauge said pressure Pm(t) and said temperature Tm(t) during time,generating a signal Tf(t) of said measured temperature Tm(t), said measured temperature being filtered of the noise,(19) correcting said measured pressure Pm(t) with a correction function F(t) containing exclusively a dynamic part, said dynamic part containing a term a1proportional to first derivative of said Tf(t) signal relative to time.In another aspect of the invention the dynamic part further comprises a second additional term a2proportional to second derivative of said Tf(t) signal relative to time.
REFERENCES:
patent: 5329818 (1994-07-01), Frick et al.
patent: 5394345 (1995-02-01), Berard et al.
patent: 2004/0144175 (2004-07-01), Sinha
Moise Stefan
Petit Pierre-Marie
Allen Andre
Echols Brigitte L.
Lefkowitz Edward
Segura Victor H.
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