| 摘要 |
A fluid level sensor for use in a chamber contained in a surgical cassette. The sensor has a pair of parallel conductor that project vertically into the chamber forming an open circuit. When surgical fluid contained within the chamber touches the conductor, the circuit is completed and AC voltage or current is passed through the conductor circuit. The conductivity of the circuit can be measured and related to the depth of fluid covering the conductors using laboratory-generated data or in situ calibration of the cassette. |
