| 摘要 |
A pressure-measuring device with monitoring for diaphragm fracture comprises a housing (10) with a passage whose two openings at the end faces of the housing (10) are closed by a first deformation body (21) and a second deformation body (22). The passage is completely filled with a transmission liquid in order to transmit the process pressure from the first deformation body (21) to the second deformation body (22). The device comprises means (31, 32) for monitoring a material property of the transmission liquid. A change in the material property indicates contamination by the process medium and thus a fracture of the first deformation body. The material property monitored is preferably the relative dielectric constant.
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