Patent ID: 8646328
Filing Date: 2014-02-11
Classification: G01F

Abstract:
1. A level sensor for determining the presence or absence of a liquid in contact with the sensor, comprising: an elongate probe; a transducer operably connected to the probe and configured to produce compressional waves in the probe; circuitry for detecting acoustic energy emitted into the liquid, when liquid is in contact with the probe; a cartridge to retain said elongate probe therein; said cartridge having a circumferential recess on an outer surface thereof; a seal member disposed at one end of said elongate probe and isolating the elongate probe from said cartridge; and, wherein said cartridge is adapted to be resiliently secured in a base having a plurality of downwardly extending fingers each having an inwardly protruding detent adapted to engage said circumferential recess of said cartridge in a snap fit configuration.