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Product Comparison Sheet
BIRNS Corona: High-Pressure Sodium Vapor Light |
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Introduction |
The BIRNS Corona is the world's most advanced nuclear-grade high-intensity light. It can be operated for indefinite periods in air and immersed into cold water without damage. The BIRNS Corona is based on proven BIRNS nuclear lighting technology and HID high pressure sodium vapor lamps. |
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Feature
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BIRNS Corona Model 5220 |
Other Brand HPS-1000 |
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Lamp Power:
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1,000 watts |
1,000 watts
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Lamp Mounting:
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Spring-loaded socket
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Silicone potting
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Lamp Availability:
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Any good lamp distributor
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Monopoly; available only from fixture manufacturer
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Are future lamp supplies assured?
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Yes! These can be purchased from any one of many distributors of several major manufacturers
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Only if fixture maker does not go out of business OR have a "force majeure" (e.g. fire, flood, etc.) OR simply decide to discontinue the product
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Replacement Lamp Price:
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$199.00 each
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$1,025.00 each (!)
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Connectors:
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Heavy-duty 304 Stainless Steel, providing complete mechanical protection for electrical pins, indexed with stainless steel keyway that prevents mismating
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Polyurethane rubber; no mechanical protection of electrical pins
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Connector sealing method:
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Redundant o-rings in stainless steel grooves
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Rubber-coated pins
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Fixture sealing method:
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Redundant o-rings in stainless steel grooves
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Not applicable; fixture is not sealed
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Lamp operating environment:
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Dry, one-atmosphere chamber inside a separate rugged quartz envelope
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Exposed to the water
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What happens if lamp breaks?
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Arc tube is contained inside separate quartz envelope which maintains "barrier" between mercury arc tube and nuclear environment
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Mercury arc tube is exposed to, and in direct contact with, nuclear environment
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Mechanical impact protection for lamp:
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A cylindrical screen around the lamp, designed to catch broken glass
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