| 摘要 |
A method and media-isolated absolute pressure sensor apparatus includes a first sensor ( 101 ) to measure a pressure difference between an isolated media (P 1 ) and a second media (Pa). A second sensor ( 103 ) measures an absolute (relative to vacuum) pressure of the second media (Pa). Each sensor ( 101, 103 ) has its own offset and slope response. An equalizer ( 217, 219 ) matches the slopes of the sensors ( 101, 103 ), wherein a summing circuit ( 225 ) can add the substantially same slope outputs to provide an output signal ( 227 ) indicative of an absolute pressure measurement of the isolated media (P 1 ). Offset and temperature compensation of each sensor can also be provided.
|
