| 摘要 |
<p>A pressure transducer is provided which incoroporates numerous stress reducing characteristics. A pressure sensor is mounted to a ceramic plate (28) with a buffer plate therebetween to isolate the pressure sensor from stresses that could be transmitted through the ceramic plate. The ceramic plate (28) is necessary for the purpose of supporting a plurality of electronic components which comprise an amplification and compensation circuit. The ceramic plate (28) is separated from all parts of its housing (12) except a minimal central surface on a support boss (24) which provides the support for the pressure sensitive device (26). Electrical communication between conductive paths on the ceramic plate and terminals extending through the housing is provided by flexible electrical conductors. A cover is attached to the housing with snap acting contact which further isolate the housing from the cap. The housing (12) and cap (36) are constructed to support the housing in a noncontact association with an external device when feet on the cap are attached directly to the external device. This offset positioning of the housing with respect to the external component further isolates the housing from sources of external stress. The combined stress isolated techniques used in the present invention permit a pressure sensor to measure very low pressures with a high degree of sensitivity without introducing measurement problems that would otherwise be incumbent in this type of transducer because of externally caused stresses transmitted from external forces and originating in the transducer because of thermal stress.</p> |
