| 摘要 |
A filtration based biological specimen collection and transfer system includes a vacuum source, a vacuum conduit configured to connect the vacuum source to a filter cartridge, an internal pressure monitor configured to measure an apparent pressure inside of the filter cartridge, an internal pressure monitor conduit configured to connect the internal pressure monitor to the filter cartridge, an ambient pressure monitor configured to measure an ambient pressure, and a controller operatively connected to the vacuum source, the internal pressure monitor, and the ambient pressure monitor. The controller is configured to calculate a true pressure inside of the filter cartridge based on a measured apparent pressure and a measured change in the ambient pressure. |
