Mercury Vapor VS Metal Halide

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These lamps are:
HPM 80W/642 DE LUXE from NBB Bohemia
POWERBALL HCI-TT 70 W/830 SUPER 4Y from OSRAM
#mercury #vapor #metal #halide #vs #preview #difference #lamp #light #lights #lighting #beautiful #colors #ccg #ecg #conventional #control #magnetic #electronic #ballast #bohemia #osram #powerball #highpressure #highintensity #discharge #e27 #lumens #kelvin #startup #gear #versus #mercurylamp #ignitor #capacitor #hci #super #deluxe

Опубликовано:

28 сен 2024

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Комментарии : 2

@Sparky-ww5re Месяц назад

Beautiful lights. Some folk might not know this, but metal halide lamps were introduced commercially in the early 1960s, around 1962 as a high CRI and more efficient version of the mercury vapor, have almost identical electrical characteristics and as such, probe start metal halide, the original version will usually work on a mercury vapor ballast of matching wattage and vice-versa, with some complications. Metal halide does require a slightly higher open circuit voltage from the ballast than mercury vapor, which increases as the lamp ages. For example, a new 400 watt metal halide on a 400 watt mercury vapor ballast will usually start and operate normally, but after maybe a few thousand hours will begin to cycle and appear EOL when in fact the lamp may have 10,000 or more hours of life left. Mercury vapor lamps on metal halide ballasts of matching wattage doesn't have this problem. In the 1990s a new type of metal halide was perfected and made available, the pulse start metal halide. This version uses a high voltage starter much like high pressure sodium and offers many benefits such as faster warm-up, shorter restrike times (2 to 5 minutes vs 10 - 15), longer life of 20,000 hrs or more, higher lumen maintenance and less color shift over the lamp's life, making metal halide more suitable in applications where only high pressure sodium was acceptable such as parking lots and outdoor security lighting where very high efficiency and long life were more important than CRI. Low pressure sodium lamps have the highest efficiency of all gas discharge lighting, usually in the 140 - 190 lumens per watt range, exceeding that of most LED lamps, but at the expense of very poor CRI of 0, with a monochromatic yellow, making every appear as a yellow version of black and white. This has severely limited their acceptance, to a few niche applications, most commonly near astronomy observatories and beaches near sea turtle nesting areas and similar habitats.

@Naguals_HID_Lamps Месяц назад

Thank you.🙂And that's true. Metal Halide lamps have been around since the 1960s, specifically in 1962 Robert Reiling created the first Metal Halide lamp with a Quartz burner (this lamp of mine in the video uses a Ceramic burner - Powerball technology from Osram, of course), but over time Metal Halide lamps understandably they improved as well as Mercury Vapor lamps, which we have had since 1912 when Charles P. Steinmetz first used halide salts in a burner, but this burner was still not consistent. However, as the years went on, the discharge lamps (Mercury Vapor, Metal Halide, High Pressure Sodium lamps) became better and better not only in rendering colors, so they had a higher RA, but also in suppressing UV radiation or extending their lifespan. Over time, Mercury Vapor lamps (and not only those) began to use a more perfect layer of phosphor, which improved the color rendering index and, last but not least, the lamps produced beautiful diffused light thanks to it. It is true that High Pressure Sodium lamps have a low RA (the so-called "White Sodium" is an exception), but they also cause low light pollution, thanks to which, even under their strong light, beautiful stars can be seen at night during a clear sky, and this is one for the reasons why I don't like LED lamps so much, which produce unwanted blue light, which not only causes light pollution, but also suppresses the production of Melatonin and also harms insects at least. Yes, a layer of yellow phosphor and also a treatment of the outer glass bulb can cure it, but we have MANY lamps here that are 6500 Kelvin and it is a pure tragedy. At least for me, I prefer either Mercury Vapor or Metal Halide or High Pressure Sodium lamps a million times. And when it comes to ballasts, yes, it also decides what is used where... Mercury Vapor lamps work with Ballast and without Ignitor. And Metal Halide or High Pressure Sodium lamps usually need an external Ignitor, but if these lamps have an internal Ignitor, then just Ballast is also enough. Well, there is a difference whether Magnetic or Electronic is used, either in terms of frequency or speed in starting the lamp. There are many factors, but all these things are very interesting (at least to me and I think to you too🙂) and that's why I like to deal with them.