Measuring system with a pressure device as well as method for monitoring and/or checking such a pressure device

A measuring system for ascertaining measured values representing at least one measured variable of a fluid,

• said measuring system comprising:
• a pressure device for conveying and/or storing the fluid in a lumen surrounded by a wall, said pressure device including a measuring transducer for delivering at least one measurement signal corresponding to the measured variable, said measuring transducer including an oscillation exciter, at least one oscillation sensor, a tube arrangement forming said lumen, and a measuring transducer housing forming a cavity accommodating said tube arrangement, said oscillation exciter and said at least one oscillation sensor;
• a first strain sensor affixed on a first wall segment of said wall for producing a first strain signal dependent on a time variable strain of said first wall segment;
• at least a second strain sensor affixed on a second wall segment of said wall spaced from said first wall segment for producing a second strain signal dependent on a time variable strain of said second wall segment;
• and
• a transmitter electronics, said transmitter electronics is adapted to deliver at least one electrical driver signal for driving said measuring transducer and said transmitter electronics being adapted to receive said at least one measurement signal, as well as, with application of the measurement signal, to ascertain a measured value, which represents said physical measured variable of the fluid;
• wherein:
• the tube arrangement includes at least one tube for conveying the fluid and the tube arrangement is adapted to be flowed through by fluid such that the first wall segment is spaced from the second wall segment relative to a flow direction of the fluid;
• the oscillation exciter is adapted to act on said at least one tube;
• the at least one tube is adapted to execute mechanical oscillations caused by the oscillation exciter;
• the at least one oscillation sensor is adapted to convert movements of the at least one tube into at least one oscillatory signal showing at least one signal parameter dependent on the measured variable;
• and wherein:
• the transmitter electronics is electrically coupled with said at least one oscillation and said first strain and second strain sensors, and adapted to receive the at least one measurement signal as well as said first and second strain signals;
• the transmitter electronics is adapted to ascertain, with application of said at least one measurement signal, a measured value, which represents the physical measured variable, and
• the transmitter electronics is adapted, for ascertaining damage to the wall, to generate a strain deviation value representing a difference between the strain of the first wall segment and the strain of the second wall segment and to use said strain deviation value for ascertaining a deviation of the strain difference from an earlier ascertained, initial strain difference.