Solid state illuminator for bi-colour ported water level gauges
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Abstract
A solid state illuminator and display means are provided for bi-coloured ported water level gauges suitable for use in high pressure steam drums or similar water/steam devices to facilitate making an accurate determination of water level in such a device. The illuminator comprises an array of bi-coloured solid state light emitting diodes (LEDs), as the light source, and a precision lens to focus the light provided from the LEDs through a gauge body and onto the view screen.
20 Citations
37 Claims
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1-16. -16. (canceled)
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17. A bi-colour water level gauge illuminator for use in determining the water level in a boiler steam drum, heater, or other piping or pressure vessel, said illuminator comprising:
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a housing having a gauge mounting side adapted for mounting said illuminator to a first lense side of a bi-colour water level gauge, said housing including at least one aperture defined in the gauge mounting side of said housing;
a plurality of first colour and second colour light emitting diodes arranged and configured within said housing to facilitate the emission of bi-colour illumination through said aperture, and through ports or windows of said gauge to a second lense side of said gauge; and
a heat divider for separating said light emitting diodes from exposure to high temperatures existing at said gauge. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31)
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32. A method of illuminating a column of a fluid level gauge used in determining the water level in a boiler steam drum, heater or other piping or pressure vessel, said method comprising the steps of:
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projecting a first light from one or more light emitting diodes of a first colour;
projecting a second light from one or more light emitting diodes of a second colour different from said first colour; and
passing said first and second lights through the column to an opposing side of said column relative to said light emitting diodes such that water or steam present at varying vertical levels in the column may be determined by observing a position of the first and second lights along the column. - View Dependent Claims (33, 34, 35, 36, 37)
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Specification