Are low pressure sodium lamps still made?
Low pressure sodium SOX lamps will surely be missed. The phase-out of the product line is to begin July 1st, 2019. These products will be produced in 2019 and 2020 in accordance with the mutually agreed delivery time.
What is a SOX lamp?
Low-pressure sodium lamps (SOX or LPS lamps) are destinctive for shining with a golden yellow light, as shown in the photo on the left. They are also an energy source with very high energy efficiency.
What are low pressure sodium lamps used for?
Low pressure sodium lamps are used in outdoor lighting of some parking areas and bridge underpasses. The very yellow color does not attract insects but it distorts colors. While these lamps are highly energy-efficient they are rarely used because all objects under their light appear to be yellow or yellow-gray.
How do Sox lamps work?
This is a film on the inner surface of the outer jacket which helps to reduce heat losses from the lamp by reflecting outgoing infra-red (i.e. heat) radiation back inside the lamp, while allowing the outgoing yellow light to pass through. These are a feature of Philips SOX lamps.
Can I replace a sodium bulb with LED?
In fact, they’re roughly as efficient as LEDs in terms of their light output for each watt of energy used. LEDs, however, are better able to control their light, which is why a lower-watt LED can replace a higher-watt high pressure sodium bulb.
How long do sodium lights Last?
High Pressure Sodium lights maintain their luminescence fairly well with 90% still available halfway through their lifespan (around 12,000 hours). HPS bulbs typically emit 80% of their original rated output at the end of life (around 24,000 hours).
What is low-pressure mercury Vapour lamp?
Low-pressure mercury-vapor lamps usually have a quartz bulb in order to allow the transmission of short wavelength light. If synthetic quartz is used, then the transparency of the quartz is increased further and an emission line at 185 nm is observed also.
What is the difference between HPS and LPS lamps?
The high-pressure lights produce a more desirable golden to white light, while the color produced by low-pressure lights is yellow to orange. High-pressure sodium lights are more popular than low-pressure lights because of this significant color difference.
What is the difference between high pressure and low pressure sodium lamps?
High-pressure sodium lamps emit a broader spectrum of light than the low-pressure lamps, but they still have poorer color rendering than other types of lamps. Low-pressure sodium lamps only give monochromatic yellow light and so inhibit color vision at night.
How do sodium lamps differ from LED lamps?
Sodium lamps are omnidirectional in that they emit light at 360 degrees, while led lamps emit light at 180. Hence, Statement 1 is correct. The two different technologies are entirely different methods of producing light. LED lifespan can be greater than 100,000 hours, more than four times that of sodium lamps.
Are sodium vapor lights being phased out?
Non compliant lamps will not be able to bear the CE marking. A number of popular lighting types will have to be phased out by 2017 including selected ‘standard’ high-pressure sodium (including retrofit), high-pressure mercury, and standard performance metal halide.
How long do sodium bulbs last?
around 24,000 hours
High Pressure Sodium lights maintain their luminescence fairly well with 90% still available halfway through their lifespan (around 12,000 hours). HPS bulbs typically emit 80% of their original rated output at the end of life (around 24,000 hours).
What is the difference between a LED lamp and a sodium lamp?
What is the difference between sodium lamp and mercury lamp?
The basic difference between the two is, the former works by electric discharge (passage of electricity through sodium vapours at high/low pressure) while the latter works through the combined effect of electric discharge through mercury vapours and fluorescence from phosphors (luminescent materials).
Where are low pressure mercury lamps used?
Low-pressure mercury lamps are also used as relatively efficient sources of ultraviolet light for applications like UV curing, lithography, UV spectroscopy, solarium, ozone generation, water sterilization and other germicidal irradiation.
How long do low pressure sodium lamps last?
18,000 hours
Low Pressure Sodium lamps have long rated average lives. Depending on lamp type, most are rated at 18,000 hours. Normal end-of-life occurs when the lamp fails to either start or warm up to full light output.
Can you put a regular bulb in a high pressure sodium fixture?
I just put 60 regular light bulbs into high pressure sodium sockets with no wire alteration and they all have come on for the 3rd night without spiking bright at all.
What is the average life of sodium vapor lamp?
about 3000 hours
The efficiency of a sodium vapour lamp under practical conditions is about 40-50 lumens/watt. Such lamps are manufactured in 45, 60, 85 and 140 W ratings. The average life is about 3000 hours and is not affected by voltage variations.
What is low pressure mercury lamp?
Low Pressure Mercury Vapour Lamp (Fluorescent Tube): A fluorescent lamp is a low weight mercury vapour lamp that uses fluorescence to deliver visible light.