At end of life, high-pressure sodium (HPS) lamps exhibit a phenomenon known as cycling, caused by a loss of sodium in the arc. Sodium is a highly reactive element and is lost in a reaction with the aluminum oxide of the arc tube.

Jun 18, 2023 · A high pressure sodium vapor lamp is a gas-discharge lamp that uses excited sodium to produce light. It is highly efficient and has a long lifespan, making it popular for industrial lighting and outdoor security areas like parking lots and roadways.

Mar 11, 2016 · High pressure sodium vapor (HPS) lights, similar to LPS lights, are a specific type of gas- discharge light (also known as a high intensity discharge, HID or arc light). The principal difference between low and high pressure sodium lights is the operating pressure inside the lamp.

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High-pressure sodium (HPS) lamps are part of the family of high intensity light bulbs that put out large amounts of light generally needed for street lighting and security lighting. The combination of metals and gasses within inside the glass tube produces an …

Aug 28, 2023 · High-pressure sodium (HPS) lighting has carved out a niche for itself in the illumination landscape. Its warm yellow hue, energy efficiency, and suitability for outdoor applications make it a reliable choice for street lighting.

High pressure sodium lamps are quite efficient, at about 100 lm/W when measured for photopic lighting conditions. They have been widely used for outdoor lighting such as streetlights and security lighting.

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Mar 12, 2021 · HPS lamps can provide high-intensity lighting, which is why they are widely used in warehouses, industrial areas, and shipment regions where fixtures are hanging high above the ground (~15 feet or more).