Like most legacy lamps HPS and LPS lamps operate by using a glass bulb. This product adopt the high power LED as the light source, using dozens of high power DMX Emitters of 1 watt LED. That simply does not exist in the marketplace. They do, however, show degraded performance at significantly high temperatures and they require significant heat sinking, especially when in proximity to other sensitive components. It is particularly useful for outdoor lighting where energy efficiency is at a premium (such as with municipalities lighting the streets or other common areas like parking lots.) Although they are very popular for street lights, they don’t serve many other applications. LPS and HPS still retain these advantages over most conventional bulbs but they lose on all three counts to LEDs. When comparing different light bulbs and lamps, it is better to compare the lumens that each bulb produces, in order to gain a true like-for-like comparison. HPS lights are more standardized among manufacturers, making it a bit easier to comparison shop. LEDs fail by dimming gradually over time. Lighting Education, Stouch Lighting Services, Park, No.2-3 South Road, Low and High Pressure Sodium bulbs are fragile relative to LEDs. So, if you need help with your high pressure sodium to LED conversion, MastLED is here to help. Firstly, HPS lights have a very narrow color spectrum, limited to warm deep yellow light. Wall Pack Lighting, California Lightworks July 13, 2016 1 8.2k. That said, although LPS and HPS bulbs have a long lifespan relative to most competitors, they still fall short of LEDs. The results of the life cycle cost analyses are summarized in the chart below. In particular, they have been known to start fires in the event that the lamp is broken and the sodium metal is exposed. Typical source efficiency ranges 37 and 120 lumens/watt. Much like fluorescent lights, modern LED lights are a wonderful solution for gymnasiums, warehouses, schools and commercial buildings. Ever wonder what’s better: high pressure sodium lights (and the related low pressure sodium lights) or light emitting diodes (LEDs)? According to American Electric Lighting, “HPS lamps still generate 90% of their initial light output at the midpoint of their life span. HID vs. Lighting Comparison, LED Retrofit Management | New & Replacement LED Products | Design & Performance Consulting | Construction & Renovation Services | Value Engineering | Request for Proposals, Parking and Area Lighting | Troffer Lighting | Parking Garage | Fluorescent Lamps | Wall Pack Lights | High Bay Lighting, Pathway & Bollard Lighting | Post Top Lighting | Flood Lighting | High Mast Lighting | Sports Field Lighting | Hazardous Location Lighting | Germicidal UV-C Light, 866-964-8559 info@stouchlighting.com 525 Turner Industrial Way, Lighting Comparison: LED vs High Pressure Sodium/Low Pressure Sodium. High Pressure Sodium lights have excellent lifespan as well (although not as good as LED) which is why they have traditionally been used for outdoor street lighting in municipalities where energy efficiency is at a premium. The principal difference between low and high pressure sodium lights is the operating pressure inside the lamp. This is typically an advantage because light is usually desired over a target area (rather than all 360 degrees around the bulb). Minus 40 Degrees Celsius (and they will turn on instantaneously). Are they equivalent?How do we conduct the ultimate grow light review? When you look at the light intensity charts for each map you’ll see what I mean. LED Lighting, In some areas (e.g. Metal Halide / High Pressure Sodium to LED Wattages Conversion: Original Lamp: LED Lamp: 70 Watt Metal Halide: 30 Watt LED: 100 Watt Metal Halide: 40-50 Watt LED: 150 Watt Metal Halide: 60-70 Watt LED: 175 Watt Metal Halide: 80-90 Watt LED: 70 Watt High Pressure Sodium: 40 Watt LED: 100 Watt High Pressure Sodium: 50-60 Watt LED: 150 Watt High Pressure Sodium: 80-90 … Continuous dimming typically alters the light output from 100% to 30% for High Pressure Sodium lamps. LED equivalent wattages to traditional light sources can only be approximate, as they will vary depending on the colour temperature and quality of the bulbs being compared. These diodes can emit red, blue or green light, and most grow lights offer a balance of the three to mimic natural light. We specialize in researching, manufacturing, and customization of LED light fixtures. It can take up to 10 minutes to get the LPS or HPS lamp up to its normal operating temperature. Generally they are cheap compared to LEDs ($5-$10 for a 100W incandescent-equivalent LPS or HPS bulb). Incandescent bulbs and CFL bulbs are more easily broken than LEDs, which increases their cost of use. LPS lamps in particular are monochromatic which means that the objects illuminated by them appear shadowy black rather than the color you would see during daylight. Sodium lamps have the worst color rendering of any bulb. Where LEDs really shine, however, is in their system efficiency (the amount of light that actually reaches the target area after all losses are accounted for). are notorious for having the worst CRI values on the market. Sodium vapor lighting typically requires a “warm-up” period in order to evaporate the internal gas into plasma. Example: High Pressure Sodium (HPS) lights have only 3% blue light in a their grow light spectrum so are not used for the early vegging cycle as this would result in stretched plants and low productivity later on. Even so, they typically aren’t produced below roughly a centimeter in width and so they do not compare to the small size and robust build of a solid state light like LED. It is very much the opposite of a photovoltaic cell (a device that converts visible light into electrical current). That being said, you can use the comparison charts … LED efficiency drops as current increases. Comparing 90w LED UFO with different configurations to a 400w HPS and other factors. Sodium lights operate in a range where the human eye is very sensitive and so there is less power required to achieve the same lighting effect. The bottom line is that having lost their traditional advantage of being the most energy efficient bulb on the market, there’s very little reason to use a sodium vapor light when LED lighting is available. Also, LEDs waste less energy producing waste heat, resulting in longer life and the best energy efficiency. LED is the newest and by far the best lighting technology available, using less wattage to produce high levels of brightness. That said, the price of LEDs are rapidly decreasing and as they continue to be adopted en masse the price will continue to drop. Foot candle is a measure that describes the amount of light reaching a specified surface area as opposed to the total amount of light coming from a source (luminous flux). Kind LED say you can. The lightbulb lumens to wattage chart below will help you understand which LED bulb is comparable to your current incandescent bulb. LEDs emit very little forward heat. Once the arc is ignited it melts and evaporates metal salts (sodium) internal to the device. Additionally, as the light heats up it requires additional voltage to operate which is balanced by a ballast (a magnetic or electric device designed to provide the light constant current). The major payback comes primarily from reduced maintenance costs over time (dependent on labor costs) and secondarily from energy efficiency improvements (dependent on electricity costs). LED Retrofit, Technically that’s diodes with an ”s” because there are many diodes together forming an LED light. This is especially true of those bulbs in linear tubes. Diodes are generally made from semi-conductive materials such as silicon or selenium - solid state substances that conduct electricity in some circumstances and not in others (e.g. 70 watt HPS = 40 watt LED; 100 watt HPS = 50-60 watt LED; 150 watt HPS = 80-90 watt LED; 250 watt HPS = 90-125 watt LED; As you can see, LED lights use far less energy to produce light of a much better quality. Commercial Lighting, Foot candle is a measure that describes the amount of light reaching a specified surface area as opposed to the total amount of light coming from a source (luminous flux). You’ll note the light intensity hardly fades at all on the Spider Farmer compared to the older boxy purple LED grow lights. The ultimate purpose of the device is to emit light, not heat. LEDs are very easy to dim and options are available to use anywhere from 100% of the light to 0.5%. (Don't give up if you received an expensive proposal to upgrade to LEDs. Tempor reprehenderit accusantium quibusdam iste accusan. Lumen maintenance at the end of life still is excellent at around 80%.” LPS lights last slightly shorter periods of time (typically failing around 18,000 hours of operation). absorbed by the ballast and/or lost to the environment. LEDs emit light for 180 degrees. The light will appear reddish/pink when it is first struck (turned on) and it will transition to its characteristic yellow as it reaches its normal operating temperature. lifespan) they are drastically inferior to LEDs. The downside is that there are very few options outside the narrow range to choose from. Advantages and Disadvantages of LED Lights, IP64 DC12/24V High Lumens LED Corn Light Bulb, 480V 347V 200W Led Corn Cob Lamp with 26000 Lumens, 150W Led Corn Lights For High Bay Fixtures. Typical lifespan values for an HPS bulb are around 24,000 hours. Both technologies are very efficient. This is usually overcome with LEDs by covering the light with a visor or facing the light downward towards the ground. Find the Right LED … Additionally, HPS lamps pose a potential fire hazard, especially when you dispose of them. Low and High Pressure sodium lights produce a very narrow spectrum of light (particularly LPS lights). This is a large system inefficiency because at least half of the light needs to be reflected and redirected to the desired area being illuminated. Here are 5 truths about growing bigger yields with LED vs HPS grow lights. You can, about the impact of directional lighting by learning about  a measurement called “, We couldn’t find any objective data on fluorescent bulb performance in high temperature situations. In other words, if you’re not looking for a warm deep yellow light, you’re going to have to use something besides Low or High Pressure Sodium to achieve it. LEDs have faster switching (no warm-up or cool-down period). Retail Lighting, Most values for LED system efficiency fall above 50 lumens/watt. So if I get one 300W LED grow light panel, it would be a safe assumption that it … Can you really increase yields and grow quality cannabis with energy-saving lights? It is typically used in outdoor environments for organizations like schools, large commercial buildings like hospitals, or municipalities managing city lighting on a budget. HPS bulbs typically emit 80% of their original rated output at the end of life (around 24,000 hours). Before LED vs HPS comparison, there was a time when HPS (High-pressure Sodium) lamps were dominating the residential, office, farming and industrial lighting scene. As mentioned, the operating life of a typical Metal Halide bulb … LEDs are naturally directional (they emit light for 180 degrees by default). Do you plan to undertake that long-postponed high pressure sodium to LED conversion for the lighting in your home or office? LED lifespan can be greater than 100,000 hours (more than four times that of LPS or HPS). If we had included air conditioning, it would make LED grow light vs HPS lighting even more cost effective in less time. On a quest for the best lights for growing cannabis? LEDs are very efficient relative to every lighting type on the market. Our extensive collection of products will surely contain the right type of LED lighting for you. The difference between led vs hps lumens per watt is greater because there's less "loss" of light. While this is increasingly becoming the case, there are still a few tradeoffs that need to be made when you choose LED: In particular, LED lights are relatively expensive. LPS or HPS lights will still likely need to be purchased several times and the associated labor costs will need to be paid in order to attain the equivalent lifespan of a single LED light. For an interesting take on the history of street lighting in the United States read, Low and High Pressure Sodium lights are well-known for their warm yellow glow (CCT values around 2200K). Now we have compact fluorescent lamps (CFL) and light emitting diodes or LED for short. Low and High Pressure Sodium lights are very cheap to purchase as well as fairly cheap to maintain. is slightly improved (HPS lights emit a yellow to white light) but it is still much worse than other types of lamps. You can read more about the impact of directional lighting by learning about  a measurement called “useful lumens” or “system efficiency.”. 100 Degrees Celsius. My grow closet measures 2′ x 8′. Nowadays, however, the situation is drastically different. LPS lamps emit a monochromatic yellow light which very much inhibits color vision at night. Red is the ideal spectrum for stem growth, flowering and fruiting. HIDs are very efficient compared to CFL and incandescent lights (120 lumens/watt source efficiency). Both Low and High Pressure Sodium lights exhibit a short delay when turning on because they need to be ignited before they operate at steady state. LEDs are very efficient relative to every lighting type on the market. A LED lamp uses 30 watts quite differently from an HPS one. Low and High Pressure Sodium lights emit heat that is. http://www.Dealzer.com However, there is exactly one other type of lighting that beats HPS in that category, and that is Light Emitting Diode (LED). LED means Light Emitting Diode. We couldn’t find any objective data on fluorescent bulb performance in high temperature situations. Since then they have gradually expanded their applications to include traffic lights, lighted signs, and more recently, indoor and outdoor lighting. Additionally, there are serious waste disposal issues with sodium lamps. Any defective LED bulb will usually fail within this time. 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