20090272188 | Binary Liquid Analyzer For Storage Tank - A fluid analysis system for use with a storage tank containing a plurality of fluids. The storage tank includes a drain outlet near the bottom of the tank and an opening at the top of the tank. The fluid analysis system includes a tube supported by the tank, at least one pressure sensor at the bottom of the tank, a fluid level sensor, and a processor. The tube extends from the opening of the tank to a position the bottom of the tank and supports the pressure sensor and the fluid level sensor. The fluid level sensor includes a reed switch assembly supported inside the tube and a magnetic float buoyantly supported on the exterior of the tube. The processor receives the pressure of the fluid detected by the pressure sensor and the fluid level detected by the fluid level sensor. The processor can determine a height of each of the fluids in the storage tank using the detected fluid pressure and the detected fluid level. A signal is transmitted when a ratio between the fluid heights remains substantially unchanged from a previously determined ratio, as fluid is drained from the tank. | 11-05-2009 |