Patent ID: 8099249

Claim:
A method for detection and compensation of a rapid change in temperature on a pressure measurement cell, said method comprising the steps of: (a) generating, by means of a first sensor device arranged on a diaphragm acting under pressure, a measurement signal proportional to the deflection of said diaphragm; (b) generating a reference signal proportional to the deflection of said diaphragm by a second sensor device arranged on said diaphragm acting under pressure; (c) generating a set of measured values from said measurement signal by a microprocessor; and (d) generating a set of respective reference values from said reference signal, characterized in that: (i) a tolerance band for a set of expected reference values is stored in a memory of said microprocessor as a function of said measured values, and (ii) said reference values are compared with said set of expected values from said tolerance band, and if there is a correspondence between said set of expected values and said tolerance band then: (1) a pressure-induced deflection of the diaphragm is detected when there is a correspondence, and said measured values are output as measured values for said measured pressure; and, if there is no correspondence between said set of expected values and said tolerance band then: (2) a deflection of the diaphragm due to a rapid change in temperature is detected; said measured values are corrected with a correction value; and, said corrected measured values are output for the measured pressure.