Author Topic: Radium HRI-T Blue  (Read 2462 times)
BlueHalide
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Radium HRI-T Blue « on: February 16, 2013, 07:13:18 PM » Author: BlueHalide
Scored a few FREE lamps today at the mall, just happened to be in the right place at the right time. The local mall here uses many colored metal halide lamps (mostly magenta and blue) as accent uplights in their main entrances and atriums. Every time I go to this mall I wonder what brand and wattage lamps they are using...well today I found out. I was walking through the atrium and a service person was on a cherrypicker changing lamps. I waited until he came down, when he did I asked if I could have the spent lamps and he was more then happy to give them to me. He had three blue metal halides that were replaced. All three were Radium 250w HPI-T Blue. Very expensive lamps! Around $100 for one lamp. I took the lamps home in hopes that they still worked even though they were near end of life. Two of the three still fired up but were a dim greenish glow  :-[ . The third didnt even fire on a pulse start ballast but the arc tube was completely blackened. These are going in the collection. Pics below, pics were taken at the mall with the blue halide uplights in the background
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Ash
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Re: Radium HRI-T Blue « Reply #1 on: February 21, 2013, 11:38:05 AM » Author: Ash
Nice score!

Those halides can go through several colors in warm up, if you give them the time they might still reach the right color
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BlueHalide
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Re: Radium HRI-T Blue « Reply #2 on: February 25, 2013, 09:53:02 PM » Author: BlueHalide
After a half hour of runtime they got slightly bluer, but still looked like a clear mercury vapor just a bit more blue. And remained that way for an hour after. It seems the quality or purity of the Indium iodide in these lamps determines its color maintenance. Ive had some chinese "blue" lamps start out nice pure blue (like the radiums) but only to shift to a pinkish-white color after 1000 hours or so. I guess thats why the Blue Radiums are $95 and the Blue Plusrite lamps are $12.
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