Patent ID: 7116237

Claim:
Pressure-measuring device (M 1 ; M 2 ) with a controller (C) for controlling the functions of the measuring device (M 1 ; M 2 ) and/or for processing measured data; a sensor (S 1 ) for measuring a variable (p 1 ) for providing first measured data (I 1 ); an output interface (IA 1 , D 1 ) for outputting the measured data (I 1 ); characterized in that the measuring device (M 1 ) has a communications interface (I 2 C 1 , I 2 C) for an additional, second measuring device (M 2 ) with another sensor (S 2 ) for measuring a variable (p 2 ) to provide second measured data (I 2 ), and is designed for receiving the second measured data (I 2 ; i 2 ), jointly processing the first and second measured data (I 1 , I 2 ; i 2 ; ΔI=I 1 −I 2 ), and outputting the jointly processed measured data (ΔI) when the second measuring device (M 2 ) is connected via the communications interface (I 2 C 1 , I 2 C, I 2 C 2 ) or the second measuring device (M 2 ) is activated.