| 摘要 |
A device to aid in the testing procedure for soil percolation used in the design of septic systems. The device is used to measure the rapidity of a change of water surface elevation. The device comprises one or more timers (24) connected to a series of sensors so that a change in the presence of water at specific elevations will start or stop a timer. The rate of water absorption and the hydraulic conductivity of the soil are then calculated from the values on the timers.
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