Process meter

摘要

A process meter for measuring at least one physical process variable of a medium stored in a container or flowing in a line, comprising: a transducer including a sensor arrangement providing measurement signals (s₁, s₂), said sensor arrangement having: at least a first sensor providing at least a first measurement signal (s₁) 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, T₁, in the transducer, and by means of said at least one temperature sensor, at least a first temperature measurement signal (⊖₁) representing the first temperature, T₁, in said transducer; and meter electronics which, using at least said first measurement signal (s₁) and a first correction value (K₁) for the at least first measurement signal (s₁), derive at least one measured value (X) currently representing the physical variable, wherein: during operation, said meter electronics determine the first correction value (K₁) from a temporal variation of the at least first temperature measurement signal (⊖₁) by also taking into account temperature values sensed in the past by means of said first temperature sensor.