| 摘要 |
A vacuum pressure transducer (1) for sensing vacuum pressure levels and for developing an electrical signal indicative of the vacuum pressure sensed. A housing (3A, 3B) has an inlet (5) connected to a vacuum source (M). A flexible diaphragm (7) extends across the housing for one side of the diaphragm to be exposed to vacuum pressure, the diaphragm flexing within the housing as vacuum pressure changes. An electrical contact (13) is coupled to the diaphragm and movable therewith, and an electrical switch (25) includes a plurality of electrically conductive segments (27) arranged in a predetermined pattern. The electrical contact contacts one or more of the segments as it moves with diaphragm, each combination of segments contacted by the electrical contact at any one time representing a discrete vacuum pressure.
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