Patent ID: 7040179

Claim:
A process meter for measuring at least one physical process variable of a medium stored in a process container or flowing in a process line, comprising: a transducer including a sensor arrangement providing measurement signals (s 1 , s 2 ), said sensor arrangement having: at least a first sensor providing at least a first measurement signal (s 1 ) in response to the physical process variable being measured, particularly to changes in the process variable, and at least a first temperature sensor mounted in said transducer for locally sensing a first temperature, T 1 , in the transducer, and by means of said at least one temperature sensor, at least a first temperature measurement signal (θ 1 ) representing the first temperature, T 1 , in said transducer; and meter electronics which, using at least said first measurement signal (s 1 ) and a first correction value (K 1 ) for the at least first measurement signal (s 1 ), derive at least one measured value (X) currently representing the physical variable, wherein: during operation, said meter electronics determine the first correction value (K 1 ) from a temporal variation of the at least first temperature measurement signal (θ 1 ) by also taking into account temperature values sensed in the past by means of said first temperature sensor.