How to Specify the TS520 Wide-Beam, Self-Cleaning, Bi-Directional Fixture
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The fixture shall be model FI-TS520 as marketed by Traffic Safety Corporation or approved equal. In order to be considered equal, the alternate fixture shall satisfy the following requirements:
Construction - Fixture shall be bi-directional and of modular design comprised of 6 major parts with the top casting of stainless steel and the bottom casting of high tensile strength aluminum alloy. The top and bottom castings shall be sealed by means of a flat gasket. Fixture shall have a smooth shaped face projecting not more than 0.50" when installed in the factory provided mounting base. The fixture shall incorporate a self-cleaning design with an outward sloping light channel to promote drainage and facilitate maintenance. Diameter shall not exceed 8" and all mounting hardware shall be stainless steel. Fixture will operate on 12 VDC and be furnished pre-wired with a waterproof 90P plug.
Durability - Fixture shall withstand a static load of 44,000 lb. without sustaining permanent deformation or cracking of materials. Leads, gaskets, etc. shall be rated to withstand 300 degrees F.
LED/Light Cavity - The lenses shall be molded high performance optical grade glass and formed to provide a sealed fit within the fixture and shall be gasketed by high density silicone rubber. There will be two lenses per fixture, one aimed at 0 degrees and the other aimed at 180 degrees. The fixture's optics shall be pre-focused to simplify maintenance. To prevent moisture intrusion, each fixture shall be installed with a Schrader valve to facilitate verification that the entire assembly is sealed at the time of installation and to allow for re-testing after maintenance.
Photometric Performance - The fixture shall produce a brightness level of more than 600,000 candela per meter squared using a yellow 12 Volt, 7 watt LED array. The dominant wavelength of the yellow LED array shall be 600nm.
Finish - The top cover shall be matte finish stainless steel while the bottom cover shall be black powder coat.
Mounting Base - Fixture shall be installed in mounting base (TSC's # BA-700-10-2) of high strength steel, hot dip galvanized after fabrication per ASTM-153 specifications, with a 7" diameter bolt circle, a 1" mud ring, and standard base depth of 10". The base shall be supplied with a plywood cover to protect the mounting flange during installation.
Warranty - The TS520 shall be warranted against defects in workmanship and materials for one year from date of shipment and is eligible for TSC's 5-Year Limited System Warranty.