Fluid quality sensor and cover assembly
First Claim
1. A sensor assembly for detecting a concentration of a fluid, comprising:
- a sensing unit including a transmitter configured to transmit a signal into a sensing volume and a receiver configured to receive the signal after the signal passes through a portion of the sensing volume;
a cover assembly at least partially enclosing the sensing volume and being substantially impermeable to a gas portion of the fluid, the cover assembly including apertures defined therein which are permeable to the gas portion of the fluid;
wherein, a first plurality of apertures are defined along a top surface of the cover assembly;
wherein, the cover assembly includes a first open end and a second open end, the transmitter disposed at the first open end and the receiver disposed at the second open end.
1 Assignment
0 Petitions
Accused Products
Abstract
A sensor assembly is provided for detecting a concentration of a fluid. The sensor assembly includes a sensing unit and a cover assembly. The sensing unit includes a transmitter configured to transmit a signal into a sensing volume and a receiver configured to receive the signal after the signal passes through a portion of the sensing volume. The cover assembly at least partially encloses the sensing volume and is substantially impermeable to a gas portion of the fluid. The cover assembly includes apertures defined therein which are permeable to the gas portion of the fluid. A first plurality of apertures are defined along a top surface of the cover assembly.
20 Citations
20 Claims
-
1. A sensor assembly for detecting a concentration of a fluid, comprising:
-
a sensing unit including a transmitter configured to transmit a signal into a sensing volume and a receiver configured to receive the signal after the signal passes through a portion of the sensing volume; a cover assembly at least partially enclosing the sensing volume and being substantially impermeable to a gas portion of the fluid, the cover assembly including apertures defined therein which are permeable to the gas portion of the fluid; wherein, a first plurality of apertures are defined along a top surface of the cover assembly; wherein, the cover assembly includes a first open end and a second open end, the transmitter disposed at the first open end and the receiver disposed at the second open end. - View Dependent Claims (2, 3, 4, 5, 6, 7)
-
-
8. A sensor assembly for detecting a quality of fluid inside a diesel exhaust fluid tank assembly, comprising:
-
a sensor including a first plate for transmitting a sonic signal through a sensing volume, a second plate spaced from the first plate for receiving the sonic signal as the sonic signal passes through at least a portion of the sensing volume, and a plurality of support members spaced from one another and coupled between the first and second plates; a cover assembly including an outer wall at least partially enclosing the sensor, the cover assembly being impermeable to a gas portion of the fluid except for openings defined in the outer wall of the cover assembly which are permeable to the gas portion of the fluid to allow the gas portion to escape from the sensing volume therethrough; a baffle disposed around the cover assembly and sensor, wherein, a first plurality of openings is defined in a top portion of the outer wall of the cover assembly; further wherein, a first space is defined between the cover assembly and the first plate and a second space is defined between the cover assembly and the second plate, the first space and the second space being permeable to the gas portion of the fluid. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 18, 19, 20)
-
-
17. A diesel exhaust fluid tank assembly for containing a fluid, comprising:
-
a tank defining an interior cavity for holding diesel exhaust fluid; a header assembly coupled to the tank, the header assembly including a fluid level sensor and a temperature sensor coupled thereto; a sensor disposed in the interior cavity of the tank, the sensor including a first plate for transmitting a sonic signal through a sensing volume, a second plate spaced from the first plate for receiving the sonic signal after it passes through at least a portion of the sensing volume, and a plurality of support members spaced from one another and coupled between the first and second plates, wherein the first plate is coupled to the header assembly; a cover assembly at least partially enclosing the sensing volume, the cover assembly including a top wall, a first side wall, and a second side wall, the cover assembly being open at both ends such that a first space is defined between the cover assembly and the first plate and a second space is defined between the cover assembly and the second plate; and a baffle coupled to the header assembly and enclosing the cover assembly and sensor; wherein, the cover assembly is impermeable to a gas portion of the fluid except for openings defined in the cover assembly and the first and second spaces which are permeable to the gas portion.
-
Specification