Borosilicate is preferred for its strength and resistance to breakage. The tube is then sealed at the desired length using a carbon dioxide laser. ĭuring manufacture, a length of borosilicate glass tube that has had the internal surface coated with a phosphor-containing material is filled with radioactive tritium. The tritium in a gaseous tritium light source undergoes beta decay, releasing electrons that cause the phosphor layer to phosphoresce. Such a tube is known as a "gaseous tritium light source" (GTLS), or beta light (since the tritium undergoes beta decay). Tritium lighting is made using glass tubes with a phosphor layer in them and tritium gas inside the tube. Tritium was found to be an ideal energy source for self-luminous compounds in 1953 and the idea was patented by Edward Shapiro on 29 October 1953 in the US (2749251 – Source of Luminosity).
Gun sights for night use and small lights (which need to be more reliable than battery powered lights, yet not interfere with night vision or be bright enough to easily give away one's location) used mostly by military personnel fall under the latter application.
#SELF LUMINOUS RED PORTABLE#
As tritium illumination requires no electrical energy, it has found wide use in applications such as emergency exit signs, illumination of wristwatches, and portable yet very reliable sources of low intensity light which won't degrade human night vision. The overall process of using a radioactive material to excite a phosphor and ultimately generate light is called radioluminescence. Tritium emits electrons through beta decay and, when they interact with a phosphor material, light is emitted through the process of phosphorescence. Tritium radioluminescence is the use of gaseous tritium, a radioactive isotope of hydrogen, to create visible light.
#SELF LUMINOUS RED CODE#
The sign is UL924 Listed and meets NFPA 101 Life Safety Code regulations, which means that is it compliant throughout the United States and Canada.
#SELF LUMINOUS RED SERIES#
The SLBX Series features a 10-year lifespan, during which there are no maintenance or testing requirements of any kind. A mounting bracket is provided with all models for top (ceiling) or end (side) mount configurations. A thin, attractive frame completes the sign completely conceals installation hardware. The SLBX Series is constructed from durable ABS thermoplastic with a polycarbonate face-shield which displays "EXIT". Please call us today at 80 with any questions you might about self-luminous tritium powered exit signs.
It can be an ideal solution for anywhere electricity is not available, including outdoors. The glowing letters of the SLBX Series can be seen from up to 100 feet away and it is suitable for use in both damp and wet locations. Choose between a red, green, or black face color, as well as if you would like the sign single or double-sided. This completely non-electrical exit sign is UL924 Listed and code-compliant in all 50 states and Canada. The SLBX Series is a tritium-powered, self-illuminating exit sign which features a lifespan of 10 years.
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