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When the bulb produces no light, you know it is bad. The less sarcastic answer is to look at the small tube inside the bulb. If the tube has a dark or even a black color to it, that means it is dead and will not work.
How long does a high pressure sodium bulb last?
Typical lifespan values for an HPS bulb are around 24,000 hours. According to American Electric Lighting, “HPS lamps still generate 90% of their initial light output at the midpoint of their life span.
Why does my high pressure sodium light go on and off?
When it nears end of life, as in the case of your lamp, reactions with the lamp’s alumina (synthetic sapphire, really) shell have depleted much of the sodium from the lamp, raising the voltage required to maintain the discharge to a point where when the lamp is fully hot, the ballast can no longer provide that voltage, Sep 14, 2016.
Why is my HPS light not working?
If the MH lamp starts and a new HPS lamp does not start, the ignitor probably needs to be replaced. If a new bulb, ignitor, and/or capacitor do not make the fixture work, then the ballast is probably defective.
Can you touch a high pressure sodium bulb?
The hps bulbs can not damaged by touching the outer glass globe like a halogen as there is no gas inside it, only vacuum, the hps bulb is inside the large glass globe to protect it.
Do high pressure sodium lights need ballast?
HPS lamps require ballasts to regulate the arc current flow and deliver the proper voltage to the arc. Instead, an electronic starting circuit within the ballast generates a high-voltage pulse to the operating electrodes.
What voltage are high pressure sodium lights?
Why is a HPS Ballast Different? The HPS ballasts differ from the mercury/metal halide ballasts in that a high-voltage (2500 volts) low-power pulse is required to strike the arc and start the HPS lamp. So a starting circuit is introduced to generate and direct this pulse.
What is the average life of sodium Vapour lamp?
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.
Can you replace a high pressure sodium bulb with LED?
LED corn cob lights are one of the most efficient ways to replace metal halide, mercury vapor, and high-pressure sodium HID bulbs.
Do high pressure sodium lights use a lot of electricity?
High pressure sodium fixtures are not as energy efficiency as LEDs. In fact, LED bulbs use between 40-75% less electricity than a HPS fixture.
What is a high pressure sodium light bulb?
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 orange-white light commonly found in street lights.
How do you test an HPS Ignitor?
Metal halide lamps do not require an ignitor to start, so the test for a failed ignitor for an HPS lamp is to screw in a metal halide bulb of the same wattage and see if it starts. If the MH lamp starts and a new HPS lamp does not start, the ignitor probably needs to be replaced.
How do I know if my metal halide ballast is bad?
Signs that a Metal Halide light bulb or ballast needs replaced: The lamp appears to be a different color, or are turning pink.
Why does my mercury vapor light go on and off?
When the sensor detects that there is enough ambient light to not need to be on, it does exactly what it’s supposed to do – it turns off. Once that ambient light is no longer detected, it will turn back on.
How much does it cost to run a high pressure sodium lamp?
Grow Light Operating Cost 1000 watt Sodium 600 watt Sodium Ballast Wattage 1100 665 Cost per Month $52.80 $31.92 Initial Lumens 130000 89000 Mean Lumens 126000 81000.
Does HPS use more electricity than LED?
LEDs use up to 70% less energy than traditional HPS systems to deliver the same light illumination. LEDs maintain a constant level of luminosity for as long as they are functional while consuming way less energy than HPS lights.
What happens if you touch a metal halide bulb?
You should be extremely careful never to get skin oils or anything else on a small MH lamp (the small ones are around the size of a fingertip or so). This will definitely harm the lamp and can cause premature failure.
Will a metal halide ballast work with a high pressure sodium bulb?
What is the Difference Between Metal Halide and High Pressure Sodium? Both Metal Halide and High Pressure Sodium bulbs are part of the HID family of bulbs. These bulbs cannot be interchanged without changing their ballast, the regulating element in all light bulbs.
Will a mercury vapor bulb work in a high pressure sodium fixture?
Mercury Vapor (MV) lamps are most frequently used outside for parking and security lighting. They are the least efficient of the HID lamps (slightly less than fluorescents) and should be replaced with more efficient metal halide or high-pressure sodium lamps when possible.
What is the difference between MH and HPS bulbs?
Metal Halide (MH) lamps provide more of the blue spectrum, which is ideal for leafy crops, and/or plants that are in a vegetative stage. High Pressure Sodium (HPS) lamps provide more yellow/red spectrum, which is ideal for most plants that are actively fruiting and flowering.
How many lumens is a 70 watt high pressure sodium bulb?
70 Watt. 70-watt HPS bulbs provide between 6300 and 7000 lumens of light in frosted and clear options.
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.
Do high pressure sodium lights contain mercury?
All commonly available fluorescent tubes and high-intensity discharge (HID) lamps contain mercury. The most common HID lamps are mercury vapor, metal halide, and high-pressure sodium lamps. Lamps manufactured after 1994 contain less mercury—an average of a little less than 23 milligrams of mercury per 4-foot-long lamp.
Which Colour light sodium vapour lamp gives?
Sodium vapor and mercury vapor lamps emit yellow and bright blue light, respectively. They are very efficient, and provide high-intensity light suitable for illuminating large, open areas.
What is the minimum voltage of sodium vapour lamp?
Halogen metal vapour lamps are operated by alternating current voltage of 220 V for lamps up to 400 W and by 380 V for lamps from 1000 to 2000 W at a voltage tolerance of 5 %.
Why are sodium lamps used as street lights?
The vapourized sodium ionizes and shines a nearly monochrome yellow. LPS lamps have been used widely for street lighting since the 1930s because of their efficiency (measured in lumens per watt) and the ability of their yellow light to penetrate fog.
