Patent ID: 7409853
Filing Date: 2008-08-12
Classification: G01N

Abstract:
1. An electronic system for use in a body of fluid comprising: a first housing element having a first upper portion and a first hollow member extending from the first upper portion, the first hollow member comprising a first top end adjacent to the first upper portion and a first bottom end opposite the first top end; a second housing element having a second upper portion and a second hollow member extending from the second upper portion, the second hollow member comprising a second top end adjacent to the second upper portion and a second bottom end opposite the second top end, the second housing element being hermetically sealed to the first housing element forming a first chamber there between, wherein an electronic circuit is mounted within the first chamber; a second chamber internal to the second housing element configured for holding a power source for the electronic circuit; means for temporarily hermetically sealing the second; and a sensor housed within a sensor housing, the sensor housing coupled to the first bottom end, the sensor configured to sense information about the body of fluid, wherein the first and second upper portions are configured to float above the body of fluid, and the first bottom end, the second bottom end, the sensor housing, and the sensor are configured to be disposed under the body of fluid while the first and second upper portions are floating above the body of fluid.