The Metal Halide Lamp (MH)
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- Опубликовано: 6 авг 2012
- How it works, Inventors, all about the lamp. Has the best bright white light for sporting events and big arenas, areas, etc. Invented by Charles P. Steinmetz in 1912 this lamp wasn't fully ready for the market until the 1960s. It has a fused quartz arc tube where halide salts combine with mercury vapor to create its great quality light (CRI 90). It is also much more efficient than it's leading competitor: the halogen lamp. It was developed by engineers at the GE Research Lab in Schenectady, New York. (Niskayuna).
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I would consider myself an HID nerd on par with and wouldn't mind shaking the hand of the presenter, but I suppose a comment and a like shall suffice. Flawless demonstration on the history and workings of an unappreciated part of modern life.
Why do metal halide lights turn on and shut off in parking lots or near areas that traffic would be frantically trying to leave cities from in like chemical gas or something? Do you know what kind of characteristics might be a good signal for drones that don't use GPS (maybe because of signal jamming) that are common to mercury vapor lamps, greenish/violet metal halide lamps or cycling metal halide lamps, defective purple LED streetlights, cycling hps (orange that cycles back to green/violet) lights, and green/lime LED streetlights and maybe the potty yellow color LED streetlights? ruclips.net/video/pnx22ZPjleQ/видео.html
This is my favorite series by far.
Good stuff here. Thanks.
thank you so much, am a technology teacher, and i use these vids to demonstrate lighting to my class. thanks again!
I love the FM intro music.
I’ve been made jump a few times when the tube goes pop and shatters everywhere. It’s especially common in the tubular lamps because the outer glass is closer to the inner tube, but the inner tube after a while of running for a long time in a setting when they’re always on will bulge and cause the outer glass to bulge in a certain place and it’ll just shatter after a while.
Sure you're not using a higher wattage ballast on lower power tubes?
@@mikafoxx2717 Wpuldn't a higher wattage ballast mean less current going to bulb?
your videos are really good!
Keep up the good work!
Very informative
Hello.
From the point of view of discharge bulbs ??? The internal sources of gas-discharge lamps, whether mercury vapor, sodium vapor or metal halide bulbs ? Are their internal sources hotter than halogen lamps ??? And that the internal ceramic sodium vapor lamp source is hotter than the internal mercury vapor or metal halide lamp source ??????
Some metall halide(MH) lamps use the same ballast and ignitor as the high pressure sodium(HPS) lamps.
What city is that at 4:41? Anyone know?
Next up, Ceramic Metal Halide. Why is it so much more efficient (even at a lower wattage) than earlier technology?
I replaced the ballast on a couple of these when I was working with an electrician.
can a light (1500 watt metal halide) that is wired 120volts be converted to 220 volts? These lights were used for a baseball feild and i ended up salvageing them. the ballasts are way heavy guessing the box weighs around 45 to 55 lbs. Thanks for youre time
It depends on how many taps there are on the ballast. Google the ballasts datasheet from it's model number.
can a metal halide 400w lamp be repair
The only comment I cant agree on is the word efficient when talking about HPS being more so than MH. The S/P ratio of MH is more than double that of a HPS lamp. While the HPS looks more impressive on paper producing more lumens per watt it is nearly half the VEL (Visually Effective Lumens) than the Metal Halide lamp. I hear this to often but when you put a 250W HPS next to a MH the MH blows it away on quality and visually effective light, largely due to the color spectrum of the bulbs. Gotta say I love Venture, great company there!
jnthnbgg So If I replace my 250w Sodium lamp with a 250w MH lamp, will I get more light?
My ballast can turn on both HPS and MH lamps
@@cloviscareca Yes, the usable light is produced in a wider spectrum, that means even though HPS produces more lumens, most things lit by that yellow light absorb those extra lumens if they are not yellow, so MH lamps produces more usable light. If you are certain your ballast is appropriate, then try a MH, but know that HPS bulbs lasts much longer than MH. I replace 70W HPS lamps by 40W LED wall packs with a substantial improvement in visibility around the lamp area, so I don't install new HPS /MH anymore since I find that LED are now affordable, are as efficient (and sometimes more) as HPS, has an even better colour rendering than MH, and last the longest (if it's of good quality).
@@ShawnGuertin I don't like LEDs. I'll try MH
I've serviced a few MH 35 / 39W recessed can fixtures with electronic ballasts, and they are extraordinarily expensive to service and complex to wire up.
TheSpazModic when shopping at grainger absolutely. BUT the magic of amazon allows me to get 20w cmh ge bulbs for 25-40$ and ge ultramax ballasts for 25$
1:02 How is that bulb running directly off mains? And why is it not selfdestructing without a ballast?
Hey put a halogen lamp in there it's the Only resistor
It's a self ballasted lamp. There is a filament in series with the arc tube that acts as a resistor.
@Rick Delair man you're the only person so far that is with me on leds yea they might be cheaper to run if you want shit light for around the house but my friends who use them to grow plants inside no they suck no heat yea a bit brite somewhat like hps vs mh in growing legal crap im sure its the same for weed mh is good for visual lighting more then hps yes its the spectrums mh is ok for vegging if its lettuce if you want a good tomato or thing's lime that hps all the way i get lemons 2 times a year the only thing i need to have is golder temperature for it in summer to fruit heat is great for other veggies but not lmon for me any way when my tree gets cold in winter i get more lmons then summeror sspring anyways im sorry to hear a place like that is to stupid to be honest God be with you
I have a Sylvania astral shop lighter 70 watt MH lamp
Do you see - its light is somewhat greenish...
Well, we have bought today the KRC400/T/V/960 lamp.
*The light is very hard for eyes. its light is tensing , suppressing the eyes.*
We are disappointed with it...
After switching on the luminescent or LED lamp, we just did not want to switch on this KRC400 any more,
at all....
The other negative moment - we hanged it vertically downwards. No reflector, just the lamp is hanging 5 meters at the top under the ceiling. Just under the lamp, along its geometric axis, there is big very dark shadow spot! 2...3 meters in diameter... It was so unexpected and disappointing and ludicrous...
The ballast (inductor) 3,25 amper (2.0 ohm) goes very hot! Probably 100 degrees Centigrade or more... I'm not sure if it is normal... I thihk this inductor will not live long...
And yes, now its Light Output is sufficiently less than that of the LED lamps... And the light of the LEDs is much more eye friendlier.
No any reason to buy this lamp. And its price is also discouraging....
It is only may be good for the street illuminating.
- - - - -
While the light indeed looks like white, like 6000K, your eyes feel not white... something strange. And the video camera gives greenish.
They show you in their advertisement the pictures of the streets illuminated with very soft white pleasurable light, misleading you about the real light.
ANYTHING IS BETTER THAN THOS ledS!
UBERX MAN What is genuinely wrong with LEDs
DavisSgt they are actually a little harmful to your health if they are to break...
I have LED. LEDs are fake lights
led are the correct light unfortunatly they spread with difficulty and they lack the benefit to human health.
LEDs are the most efficient light and have the most colours
nope
Look up Low pressure sodium, You can get total system efficiency of up to 154 Lumnens per watt. (that is with the magnetic ballast factored in) also lumenen maintenance is near 90% over the whole life of the bulb.
LEDs have the ability to come in lots of colors, but even then the individual colors are depended on the medium being used, for true 100% color coverage you are looking at really well tuned RGB setups as found in expensive monitors.
LED is shit.
lihgt bulb :)
Can I use my cars headlights to grow weed?
Yes.
Weed is cringe.
I don't think Bro is joking
Fantastic vídeo conglatulation.
ruclips.net/channel/UCRXsvM8chOngaI4gBkBg3yQ
ruclips.net/video/SXUuCza8n0k/видео.html
ruclips.net/video/3vJsKLCSn_I/видео.html
i cringed while he was touching the glass, it will explode if you leave to much finger grease on it.
***** exactly if there is grease on the glass and it heats up it can explode.
Well the inner tube is made of quartz, but the outer shell he touches is a regular incandescent light bulb glass, it's inert to finger grease. Only some high powered models are without the outer glass tube.
I have always heard that too. But I have been touching my HID bulbs for 20 years and I've never seen any negative effects other than fingerprints blocking light. I have sprayed hot HID bulbs with a garden hose before and they never broke. My yard light is exposed to rain and has worked fine for years. I have dropped them on the floor and they didn't break. I threw one once and all that happened was the inner wires bent and the arc tube shifted out of place; It still works fine today. I threw an old 1000 watt away in the trash and hit it with a stick several times and could not break it and gave up. Also I believe there is a vacuum in the outer bulb envelope not pressure. Though I have never broken one to see so I could be wrong.
HID bulbs are tougher than people give them credit for. I do NOT advocate abusing them because they are big bulbs and they are glass but don't be afraid to touch them, they won't explode in your hands though they do get VERY very hottt so never tough a hot HID bulb. Just remember to wipe off the fingerprints because they do block light from passing thru. HID bulbs are tough. But please DO treat them with care.
The Halogen bulbs are a different story. I never use those because they ARE more fragile than eggs.. So I can't speak of Halogens just MH, HPS and Mercury Vapor HID lamps. Just thought I'd share my experience to ease your mind a little. :)
EdisonTechCenter please feel free to correct me if I am wrong; I may just be really lucky...
+DjResR hit the nail on the head