High Pressure Sodium Lamp Life

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.

High pressure sodium lamp life.

A high pressure sodium lamp philips master sdw t 100w various types of chemistry are used in the arc tubes of hid lamps depending on the desired characteristics of light intensity correlated color temperature color rendering index cri energy efficiency and lifespan. A sodium vapor lamp is a gas discharge lamp that uses sodium in an excited state to produce light at a characteristic wavelength near 589 nm. Due to their high efficiency and long life today s hps lamps are also suitable for many interior applications particularly where color rendering is not a crucial concern. Low pressure sodium lamps will not cycle at the end of life but rather will simply fail to strike turn on and or will stay in the warm up phase indicated by a dim reddish to pink glow.

Lamps are avail able from 35 to 150 watts in medium base and 50 to 1000. Basic operation in a high pressure sodium lamp a compact arc tube contains a mixture of xenon sodium and mercury. Eye sunlux en hps is an environmentally friendly lamp with a lead free base that passes us epa tclp compliance testing. Standard lumalux standard lumalux lamps are known for high efficacy long life and reliability.

Sylvania s range of high pressure sodium lamps are erp compliant and combine excellent efficacy with extremely long life. Sunlite 03620 su lu150 med high pressure sodium light bulb 150 watts ed17 med medium base e26 ansi code s55 15000 lumen 20000 life hours clear 2100k 4 3 out of 5 stars 284 13 77 13. High pressure sodium lamps may be used in open luminaires except for item 67527 lu400t7 rsc and sox low pressure sodium which must be operated in an enclosed fixture. The first lamp with 400 w 42000 initial lumens and 6000 hour life first came in the market in 1965.

These elliptical and tubular lamps radiate high levels of warm white light and have low operating costs making them suitable for streetlighting and industrial applications. Vivosun 1 pack 1000 watt high pressure sodium hps grow light bulb lamp high par enhanced red and orange spectrums cct 2100k ultra bright 140 000 lumens 4 4 out of 5 stars 267 28 99 28. 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. High pressure sodium bulbs may flicker and or cycle on and off as the bulb reaches the end of its useful life.