High Pressure Sodium Vapor Lamp

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High pressure sodium vapor lamp.

The lamp is an improvement over the lps lamp in that it has more acceptable color with the great efficiency of the sodium lamp. The principal difference between low and high pressure sodium lights is the operating pressure inside the lamp. High pressure sodium lights are used for illuminating large outdoor areas. Sodium bulbs can last up to 20 000 hours.

Metal halide bulb mercury vapor lights high pressure sodium hid bulbs e26 hid bulbs sodium vapor ballast home street light. High pressure sodium lamp hps lamp the hps lamp is the most ubiquitous lamp for street lighting on the planet. Two varieties of such lamps exist. 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.

Sunlite 03610 su lu70 med high pressure sodium light bulb 70 watts ed17 med medium base e26 ansi code s55 6000 lumen 24000 life hours clear 2100k 4 3 out of 5 stars 287 13 46 13. We also offer special conversion metal halide bulbs that can be used with fixtures intended for high pressure sodium light bulbs. Set your store to see local availability. Low pressure and high pressure low pressure sodium lamps are highly efficient electrical light sources but their yellow light restricts applications to outdoor lighting such as street lamps where they are widely used.

The sodium vapor strikes an arc over 240 c. The first lamp with 400 w 42000 initial lumens and 6000 hour life first came in the market in 1965. Some bulbs also briefly produce a pure to bluish white light. They emit bright yellow light.

In 1959 the development of polycrystalline alumina pca opened a new path to introduce the high pressure sodium vapor lamp as this material is very rarely affected by high pressure and temperature sodium vapor. Typically these lights are used on sides of industrial buildings and in some street lamps. The sodium is mixed with other impurities to create a. As the main arc strikes and the gas heats up and increases in pressure the light shifts into the visible range and the high gas pressure causes.

The high pressure sodium lamps have excellent colour rendition with a white colour appearance. The heavy duty transformer or ballast is also long lived if the bulbs are changed out before they burn out. High pressure sodium hps lamps are smaller and contain additional elements such as mercury and produce a dark pink glow when first struck and an intense pinkish orange light when warmed.