Term |
Definition |
Reference Link |
| 209E |
The original federal standard 209 version "E" was superceeded by the standard ISO 14644. The original standard referenced classes such as 1, 10, 100, 1000, etc. where the new standard uses 1, 2, 3, 4, 5, 6, 7, etc. http://en.wikipedia.org/wiki/Cleanrooms#ISO_14644-1_cleanroom_standards |
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| acrylic |
A UV resistant highly transparent thermoplastic that is common in the lighting industry. Wet locations fixtures must use UL RC type f1 to certify that it is suitable for outdoor UV exposure. There are Virgin and standard grades. Virgin is superior and differs from standard in that there is no recycled or regrind materials in the lens, making it more transparent, durable and UV resistant. |
http://www.kurtzon.com/Catalog/Wetlock/Wetlock-FB.pdf |
| CRM Continuous Row Mounting |
The Continuous Row Mounting (CRM) system is an approach to sealed lighting installations. This system allows for a single ceiling cutout to be filled with several fixtures that butt and seal to each other, providing the most efficient use of ceiling and plenum space. In this type of installation, foot-candle levels can be higher than single fixture designs allow. |
http://www.kurtzon.com/Catalog/Wetlock/Fluorescent/WL%2013.P |
| CRS |
Cold Rolled Steel. Classified as ASTM: A1008 CS Type B. Carbon steel mechanically work hardened to provide strength to the steel sheet in a manner that allows forming but generally maintains its shape and resists dents better than annealed steel. Corrosion protection is provided by a secondary finish process. |
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| Groups |
Hazardous Locations are also divided by "groups" that refer to the amount of energy found in the gas or dust. All Kurtzon fixtures are listed for groups "A" through "D". Some also have protection for Dust and fiber groups "F" & "G" |
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| Hub |
The power entry point of a lighting fixture. Threaded for direct connection to conduit or a conduit fitting. Usually they are water tight and required for use in all hazardous locations fixtures. Sometimes they are integrated into the fixture or sent as a field installed part. |
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| neoprene |
A synthetic rubber that is oil and solvent resistant and when made into a closed cell foam provides a resilient gasket that is water and air tight. Important: Neoprene is a thermal set material. This means that it does not melt or outgas like thermal plastics, making it a long lasting non-shrinking gasket choice. See the gasket chart in the cleanroom brochure. |
http://www.kurtzon.com/gasket%20chart.jpg |
| NSF |
The National Sanitation Foundation: A nationally renown independent testing and certification laboratory concerned with the protection of health. The USDA and FDA rely on their standards for the safety of water, food and drug production. |
http://www.nsf.org |
| polycarbonate |
A very durable and almost unbreakable plastic that is tougher than glass It has less UV resistance and can be scratched easier but for many applications where durability is key polycarbonate is the only material to use. |
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| polyester |
Polyester is a hard but flexible plastic coating applied as a powder to metal surfaces to provide corrosion resistance and a reflective finish. The most durable powder coating for exposure to UV and outdoor applications. Our materials provide 1000 hour salt spray test corrosion resistance. |
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| silicone |
Silicone gaskets are made of a inert, synthetic polymer compound. Typically heat-resistant and rubber-like, they are commonly used as sealants for cleanroom, food process and medical applications. For cleanspaces their use should be restricted to RTV (room temperature vulcanized) sealants due to the inherent weaknesses of foamed gaskets. |
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| stainless steel |
A corrosion resistant alloy steel created by adding Chromium and or Nickel with other elements to the steel. They are graded technically by number such a 304, 316 or 430. They are also called by a common name using the percentages of chromium and nickel such as 18/10 or 18/12. All common stainless steels have at least 17 percent chromium. |
http://en.wikipedia.org/wiki/Steel_grades |
| T-Bar |
This variety of fixture is installed from above and sits atop the grid. T-grid recessed fixtures are the most popular recessed fixture. Grid fixtures can be found in wet locations and all classes of cleanrooms, though they are usually not used in class 1 and class 10 spaces. There are four different types of cleanroom grid systems and each will require a different fixture. The types are 1" (same as 15/16"), 1.5", 2", and 2.6" and refers to the width of the grid material cross-section. There are standard fixture sizes to fit each of the grid types available. Remember to specify the grid type when ordering fixtures. To seal the plenum, the fixture uses a gasket at the lower surface that interfaces with the grid. Gel-seal grid systems are far less common today than standard gasketed grid systems, and require special fixtures |
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| tear-drop |
lighting fixtures used within the flow of air shaped so that no turbulence is made. |
http://www.kurtzon.com/Catalog/KleanLock/KL%201.PDF |
| thick |
The thickness of the lens is important to its rigidity and therefore the durability of the seal at the interface of the lens and doorframe. Most manufactures provide nominal 1/8" acrylic which usually measures less than 0.110 at the thickest point and .04 at its thinnest. Since our lenses are formed on the same die-set the thickness is added to the solid portion of the lens, making it much more rigid and durable. |
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