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Tanning UV lamp

Tanning UV lamp

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UV tube from a tanning / heat lamp. Just like a 125w mercury tube with gold heat reflectors on the electrodes

cosmo.jpg black_light.jpg Tan_UV.jpg Atlas_400W_SON.jpg

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Manufacturer:Philips

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Filename:Tan_UV.jpg
Album name:tuopeek / High Pressure Lamps
Keywords:Lamps
File Size:124 KB
Date added:Oct 20, 2011
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Date Time:2011:10:20 20:54:39
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Powergroove
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Oct 20, 2011 at 06:45 PM Author: Powergroove
This is a probe start lamp. I am curious as to what tanning bed this is used in.

Keep government out of the lighting industry.

Xytrell
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Oct 20, 2011 at 07:35 PM Author: Xytrell
Do they use a coating to stop the UVC?
Medved
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Oct 20, 2011 at 11:39 PM Author: Medved
I've seen these not much in sun beds, but in stand-alone boxy sun tanning lamp. The box contained one MV arctube on the center and usually two ceramic sleeved heater elements on the sides of the reflector. It had two modes: One was "Sun lamp", where the heaters are connected in series with the MV arctube and so serve as it's ballast and generate a bit (about 150W) of the heat, so the natural feelings about too intense/weak sun exposure work. In the "Heat only" mode the arctube is shorted out (by the mode selector switch), so only the heaters are powered, boosting their power to about 500W.

No more selfballasted c***

tuopeek
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Oct 21, 2011 at 01:24 AM Author: tuopeek
Yup, that exaxtly the type of unit this lamp is from. There is just a resistor in series with start eletrode. The UV output is a bit strong and exposure time is generally a few minutes.
dor123
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Oct 21, 2011 at 01:27 AM Author: dor123
Suntanning beds uses usually suntanning UVB fluorescent lamps. I don't know what is their legitimate in Israel, as the Health Minister of Israel and other organizations, warns, that these can cause serius skin damage, aging and cancer.
According to a Ynet article from 2003 ( Link [Article is in hebrew. use google translation]), the suntanning beds were very popular in Israel in 2003 and used multiple suntanning fluorescent lamps, both above and below the body, and the beds usually had an oyster shape. However the isreali Environmental Research Institute, says that the radiation intensity from these sun beds is up to X10 higher than that of the sun, and that they are very much more dangerous than suntanning under the sun.

I"m don't speak English well, and rely on online translating to write in this site.
Please forgive me if my choice of my words looks like offensive, while that isn't my intention.

I only working with the European date format (dd.mm.yyyy).

I lives in Israel, which is a 230-240V, 50hz country.

Ash
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Oct 21, 2011 at 02:16 AM Author: Ash
I have the entire device (Soviet made, probably from late 80's, new unused). Pretty much redundant in Israel anyway

When i seen it i immediately thought "heck they probably just use 125W mercs arc tubes" - i wonder how long it would take for the arc tube seals to fail in a setup like that
dor123
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Oct 21, 2011 at 02:43 AM Author: dor123
Usually bare arctube mercury and MH lamps (The ones that uses for european stadiums and for stage lighting [HMI]) have long end seals to keep them cool, and so the seals don't oxidizes.
The gold heat reflective coating is a compensation for the absence of the low pressure nitrogen filled outerbulb that provides a thermal isulation. The heat reflective coating increases the temperature and the pressure of the mercury and allow the lamp to operate at full temperature and pressure without an outerbulb.
However, i think that the end seals in this specific lamp are too short to be sufficiently cooled.

I"m don't speak English well, and rely on online translating to write in this site.
Please forgive me if my choice of my words looks like offensive, while that isn't my intention.

I only working with the European date format (dd.mm.yyyy).

I lives in Israel, which is a 230-240V, 50hz country.

f36t8
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Oct 21, 2011 at 04:24 AM Author: f36t8
I have something similiar, from a tanning lamp from Philips, but the arc tube has the same socket as linear halogen, not wires. It is a 400 W lamp and it had a lossy magnetic ballast (probably because it isn't meant to run continously) and it had an electronic ignitor on a circuit board (bare, not encased).
Medved
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Oct 21, 2011 at 11:00 AM Author: Medved
The Chirana fixture of my parents have the arctube in a metal (aluminum?) holder, what most likely act as a heatsink to keep the seals cool enough to survive the exposure to the oxygen. Moreover these pinches are made apparently so, the larger glass surface area act as a heatsink on the seal end.
Here the golden reflector does not only reflect the heat back, but prevent it (in significant part) from reaching the seal ends, what may lead to lower seal temperature, so maybe just below the dangerous level.
Moreover on some was described the use of some sort of external coats, what are supposed to block the air to come in contact with seal.

No more selfballasted c***

Globe Collector
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Feb 08, 2019 at 05:44 PM Author: Globe Collector
See one such unit here.

Lamp is metal halide with cobalt and iron iodides added to the arc tube.

f36t8, your lamp is a HPA 400S.

Manufactured articles should be made to be used, not made to be sold!

Fee, Fye, Fow, Fum, A dead man's eye and a parrot's BUM!

Max.
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Feb 08, 2019 at 10:29 PM Author: Max.

See one such unit here.

Lamp is metal halide with cobalt and iron iodides added to the arc tube.


I wouldn't be so sure Andrew. A Fe-Co iodide arc tube wouldn't start at 220-240 V mains voltage even with an auxiliary electrode (because of the free iodine and hydrogen iodide present in the start gas). I think the lamp shown above is a plain medium-pressure mercury burner, made certainly of a doped quartz material that absorbs short-wave UV radiations. The end coats are necessary here because this arc tube operates in free air and runs at a relatively low discharge power load. Finally, the brown-yellow Fe/Co salts would be visible if this was an HPA-like burner.
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Feb 08, 2019 at 10:38 PM Author: BlueHalide
This is a plain mercury vapor lamp as max and others have stated, I think Globe Collector may be thinking of this lamp, http://www.tanninglamps4less.com/he40fala.html as it looks superficially similar to the lamp above with the gold ends, yet is actually metal halide.
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Feb 09, 2019 at 12:57 AM Author: Globe Collector
I have both one of those Heraeus lamps and Philips HPA 400S but have not run the Heraeus up. I also own own of these hard wired Sun Lamp units, but the burner/arc tube is hairline cracked and won't start....hence I have not seen the spectrum of one of these. I only know the spectrum of the HPA 400S.

Yes, I understand that molecules like HI and I2 would carry away energy from the plasma in the form of non radiative rotational and vibrational modes, spinning of the two atoms end over end and flexing of the sigma bond between them...I think this sort of thing radiates way down in the far IR or even Microwave part of the spectrum.

Dor, I looks like I owe you an apology then.

Thank you Max for elucidating this issue.

Manufactured articles should be made to be used, not made to be sold!

Fee, Fye, Fow, Fum, A dead man's eye and a parrot's BUM!

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Feb 09, 2019 at 02:29 AM Author: Max.
No problem Andrew, I understand that the use of this kind of end coating on the quartz burner can be quite misleading as to the nature of this lamp. As for the HI and I2 molecules, their very low threshold of energy excitation is deadly for the swarm of electrons accelerated between the electrodes. The resulting loss of kinetic energy lead to a very significant increase in the minimum ignition voltage requirement, even with an auxiliary electrode.
Globe Collector
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Feb 09, 2019 at 02:48 AM Author: Globe Collector
A lot of standard mercury lamps in my collection, particularly small 50, 80 and 125w ones with small volume burners and lots of surface area have Au or Pt mirrors behind the electrodes.

Manufactured articles should be made to be used, not made to be sold!

Fee, Fye, Fow, Fum, A dead man's eye and a parrot's BUM!

James
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Feb 09, 2019 at 03:53 AM Author: James
Indeed it is a plain mercury lamp, Philips HPQ 125W. They also made a smaller HPQ 80W. The gold heat reflectors help to keep the seal temperature low enough to allow a lifetime of about 500-1000 hours, which is quite sufficient bearing in mind the few minutes duration of a typical tanning session.

They were banned in Europe in the 1980s because these type of lamps have an uncontrolled spectrum rich in UV-C, and they could not comply with the limits set for NMSC / non-melanoma skin cancer, a value that has to be derived for each suntanning lamp based on its spectral power distribution. They were superseded by the HPA Iron-Cobalt halide lamps which concentrate more energy into the relatively safe UV-A wavelengths. Those types also feature a special doped quartz arc tube to block deeper UVB and UVC to comply with the NMSC limits, and to keep the UVC/UVB ratio less than 0.003 which is an additional requirement set by FDA for suntanning lamps sold in USA. Incidentally two different quartz types are used for lamps sold in USA vs EU. The former use so-called FDA quartz (Philips PH303 quartz) whose absorption is quite strong and also reduces the UVA efficacy. The European types use more common OZF ozone-free quartz (Philips Quartz 304).
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Feb 09, 2019 at 04:58 AM Author: Globe Collector
You would not think ozone could survive at the working temperature of quartz...or is it produced by the UV-C flux impinging upon oxygen trapped in the silica matrix, during use?

Isn't UV-C opaque quartz doped with cerium-VI?


Here in Australia...the skin melanoma capital of the world, all sun tanning equipment was banned a few years ago when a c27y.o. girl died of melanoma after using the sunbeds with the Pb-II activated CaSiO3 type phosphor 8' T12's in them.

Interestingly she was Chinese Malaysian with quite a high malanocyte level anyhow...but still did not protect her. The Government "Knee-Jerked" after that incident. For a short while there was a glut of those UV-A T12's then it all went dead.

The fact a darker skinned person was not immune scared the crap out of all the pale skinned Anglos out there because there is this perception that high malanin levels offer some degree of protection...(which I think is untrue).

I don't think this case involved any form of High Pressure Lamps.

Manufactured articles should be made to be used, not made to be sold!

Fee, Fye, Fow, Fum, A dead man's eye and a parrot's BUM!

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Feb 09, 2019 at 12:53 PM Author: Max.
Thank you for the pointer, James - I had not realized that this particular lamp was actually a Philips HPQ 125W.
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Feb 09, 2019 at 01:27 PM Author: Andy
I remember buying a tanning lamp from a jumble sale for £1 when I was a kid aged about 12. It had a bare HPMV arc tube just like this and I recall it was ballasted with a heater element of some sort.
To be honest it was a lethal bit of kit and when my mum found me with it a few days later she took it and chucked it in the bin after lecturing me how dangerous it was!

My main area of interest is vintage fluorescent and mercury lamps. Always interested in doing lamp trades - just let me know! Smiley

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Feb 09, 2019 at 07:01 PM Author: Globe Collector
Andy, I reckon your mum had "had a run-in" with UV-C at some point in her life...and was wary ever after!

Manufactured articles should be made to be used, not made to be sold!

Fee, Fye, Fow, Fum, A dead man's eye and a parrot's BUM!

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