Lighting and Indicator Assembly for Level Gauges
AssigneeEmerson Automation Solutions Final Control US LP
InventorsRam Kumar Kushwaha, Partha Shinnasamy
Life of this patent
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Abstract
Embodiments of the invention provide a lighting assembly for use with a fluid level indicator assembly. The lighting assembly includes a plurality of lighting elements, at least one printed circuit board configured to control the lighting elements, at least one focusing lens, and a lens assembly. The lighting assembly can be comprised of multiple lighting sub-assemblies, which are stackable to one another to be mounted to level gauges dimensions.
Claims20
A lighting assembly to project light through a fluid chamber of a liquid level gauge, the lighting assembly comprising:
- at least one light emitting diode (LED) configured to project light through the fluid chamber;
- at least one printed circuit board (PCB) configured to control the at least one LED;
- at least one focusing lens disposed between the at least one LED and the fluid chamber to focus the projected light from the at least one LED;
- and
- a lens assembly configured to direct light of a first color and a second color through the fluid chamber.
An indicator assembly for use to indicate a fluid level of a vessel, the indicator assembly comprising:
- a liquid level gauge that includes one or more lighting slots that each traverse a fluid chamber that is configured to be fluidly coupled to the vessel;
- and
- a lighting assembly that includes:
- a plurality of lighting elements that are configured to project light through the fluid chamber;
- a printed circuit board (PCB) that is configured to control the lighting elements;
- at least one focusing lens that is disposed between the lighting elements and the fluid chamber to focus the projected light from the lighting elements;
- and
- a lens assembly that is configured to direct light of a first color and a second color through the fluid chamber,
- wherein the indicator assembly is arranged such that light of the first color propagates through a viewing slot when a first fluid is present at a first level of the fluid chamber and light of the second color propagates through the viewing slot when a second fluid is present at the first level of the fluid chamber.
An indicator assembly for use to indicate a fluid level of a vessel, the indicator assembly comprising:
- a liquid level gauge that includes a lighting slot and a fluid chamber that is configured to be fluidly coupled to the vessel;
- and
- a lighting assembly configured to project light through the fluid chamber, the lighting assembly including:
- a plurality of lighting sub-assemblies, each including a printed circuit board (PCB) configured to control a plurality of lighting elements, at least one focusing lens disposed between the lighting elements and the liquid level gauge, and at least one colored lens;
- and
- a level display that includes a housing with a plurality of viewing windows arranged to correspond with the lighting elements of the lighting sub-assemblies, the plurality of viewing windows configured to display a first color of projected light when a first fluid covers the lighting slot and a second color of projected light when a second fluid covers the lighting slot.
Dependencies are inferred from the claim text.