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T8 fixtures in my room

T8 fixtures in my room

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These replaced my 4 lamp wrap fixture a few months ago because the ends of my room were not lit well. These do the job perfectly. I don't know the brand.

Lamps:
4x 3000K GE Ecolux F32T8
1x 3500K GE Ecolux F32T8
1x 6500K GE Ecolux F40T12* (Hg starved)

I have two Ecolux T12s with no mercury. They came from a neighbours shop. Both were in the same fixture that was on 24/7. It was magnetic RS and these were still lighting on it


20150404_231442.jpg 20141230_034625.jpg 20141228_013857.jpg 20141021_224335.jpg

Light Information

Light Information

Manufacturer:Unknown
Fixture
Fixture Type:3 x 2lamp wraps
Ballast Type:one 4lamp and one 2lamp T8
Electrical
Wattage:6x 32w T8

File information

File information

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Filename:20141228_013857.jpg
Album name:Lightingguy1994 / Fixtures in my collection
Keywords:Lanterns
File Size:134 KB
Date added:Dec 28, 2014
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jercar954
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Dec 28, 2014 at 12:40 PM Author: jercar954
Pretty rare for an Ecolux to go mercury starved. Alto's are famous for it!

Preheat and T-12 fluorescents forever! Down with LED's and instant start T-8 fluorescents.

Lightingguy1994
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Dec 29, 2014 at 04:45 PM Author: Lightingguy1994
I have 2 daylight 40w ecolux tubes that are fully mercury starved. when tested on a F40 ballast, they still run.

I wonder if they have neon in the gas fill. When compared to a normal Ecolux, the dim one is more like 5000K than 6500K due to a more redder appearance

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Jul 29, 2019 at 05:51 PM Author: Globe Collector
Still no spectrum. And without a spectrum we cannot determine why this lamp is not functioning as it should.
I think the term, "Mercury Starved" is a "follow the leader" term....one says it, another copies it and before long almost everybody is saying it without a shred of evidence....like somebody says the word, "gobble" next to a pen fill of turkeys and they all respond with "gobble, gobble, gobble".

I postulate that this is due to "air poisoning" .... although this is as unproven as the "mercury starvation" theory, when you think about it logically there are more conditions that support this idea.


1: The pressure on the outside is higher than the pressure on the inside.

Consiquences: It is more likely that small molecules from outside, (N2, O2) will find their way in than large atoms from the inside finding their way out, (against the pressure gradient).

2: Fluorescent lamps in this state run far hotter than when functioning as they were designed to (something that is usually easier to verify with one's sense of touch at the site than run a spectrum).

Assumptopn: Poly atomic molecules are carrying energy non-radiatevely away from the discharge plasma by rotation and vibration. Atoms, such as krypton, argon or mercury cannot rotate and vibrate so they cannot carry away anywhere near as much energy in a non-radiative manner as molecules can.

3: Low resolution spectra reveal absence of mercury lines.

Deduction: Small molecules are impacting excited mercury atoms and taking away their excitation energy before they can emit their resonance lines to excite the phosphor.

4: If, indeed the mercury charge dosed to the lamp at the plant has "gone away"....where has it gone and why? As far as I can tell, nobody has yet answered this question successfully or adequately with evidence to back up their claim. Why would the vapour pressure of mercury drop to virtually zero without the corresponding drop of temperature to virtually zero also, (as the Clausius-Capayron relation states.)

The reason why some fluorescent lamps transition into this "Zombie" state has been assumed by all...but that assumption has not been tested and as such nobody (yet) really knows the reason why some fluorescent lamps end up in this state.

French philosopher Auguste Comte famously once said that humanity would never be able to determine what the stars or planets are made of....spectroscopy proved him incorrect...thus, again, we need to apply spectroscopy to understanding] this issue rather that just copying the statements of others.


So somebody out there needs to get a good quality spectrum of reasonable resolution and sufficient intensity to see if any broad molecular bands are revealed. Currently no such spectrum exists as nobody has run one when seeing a lamp in this "zombie" state.



User "dor123" is a prolific taker of spectra, but refuses to upgrade his apparatus to sufficient resolution to be truly useful...other members seeing such zombie lamps either do not possess spectrascopes outright, or if they do, do not have them handy when seeing such a lamp or are unable to couple their spectroscope to their camera successfully.

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!

Lightingguy1994
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Aug 01, 2019 at 10:03 AM Author: Lightingguy1994
Wtf?

No no no, you are not going to sh!t on me for the wrong doings of other members on one of my 5 year old pictures. If I had that spectroscope eye piece I would have posted my findings long ago. Not going to fumble with a CD-R.

I labeled this mercury starved due to the fact it still works on any ballast, indicating that its starting gases are intact. Had it not started on anything other than a T8 ballast I would have said contaminated as it would be likely the starting gases would have air mixed in.

As for where the mercury goes, it has been said a small percentage of it gets absorbed into the phosphors over time where it becomes useless. Not an issue for proper dosed tubes, but for low mercury tubes, it might be all it had. Whether these assumptions are correct is another story but it is what I went on when I processed these tubes into the collection.


I still own these dim tubes so someday when i get that scope I will post a pic of the spectrum for you and anyone else curious.

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Aug 01, 2019 at 05:29 PM Author: Globe Collector
Sorry, I'm not "trying to shut on anybody"....least not intentionally, but if that's how you initially felt, I'm tuely sorry.

I'm just trying to get some spectra before the "LED/Solid State tide" washes all traditional light sources into history.

Here in Tasmania about 80% of traditional lighting, i.e. incandescent, linear fluorescent, CFL and HID has disappeared already, (In the Domestic, Industrial, Public and Commercial sectors)....now that may not be the case in your part of the World....YET, but it is certainly alarming here as to its rapidity of pace!

As you are probably aware I have posted the above statement/comment/question in about a dozen or so places. RCM442 has already reprimanded me about that as it apparently breaches site rules. However it has resulted in a lot of very interesting and revealing discussions between myself and wide selection of members in the UK, North America and Europe. Out of these discussions a consensus as to just what causes these "Zombie Tubes" is being reached. I have coined the term "Zombie Tubes" as it does not allude to any specific failure mechanism or assumed failure mechanism.

It appears it is not just one failure mode but at least two distinct and different modes and possibly more and/or combinations of them. Under dosing, (due to Government implemented RoHS decrees), mercury sorbtion and air poisoning, (mainly due to use of meniscus seals on exhaust tabulations) all feature fairly high in the causes list, but there is probably a whole plethora of other causes too which further research might well reveal as they are not immediately obvious. Planned obsolescence has not been ruled out either, particularly with regard to meniscus seals.

As for myself, I have only ever encountered "Zombe Tunes/CFLs" twice in my life, one being a bihelical CFLi in a rented house in Taupo in New Zealand over a decade ago and the other, some T8's high up in troffers in a shop here in Hobart...I asked the guy if I could have them and he said, "Yes!, for $50 each!" My reply was rather predictable and non-verbal.

If I ever do come across another such tube or CFLi I will use as much persuasion as possible to obtain it, but considering the low probabilities I have encountered in the past, before the solid state/semiconductor lighting paradigm shift was fully underway and considering how far advanced that paradigm shift now is, (least in my corner of the World), the chances I will ever see a tube in such a state in the future is quite remote and becoming more remote every day, let alone obtaining samples to study in detail on my bench.

This was my motivation to call on other collectors all around the World to assist, the rationale being that of more sets of eyes a looking the chances of finding are far greater. Indeed, people such as yourself already possess samples in storage. Since you do have samples, as do a few other members I have spoken to, then there is no real rush to get their spectra, just please don't turf them into the bin before you do!

Again, I apologize if I have offended you in some way, but a spectrum of a "Zombie Tube" ... or more than one "Zombie Tube" would go a long way to understanding this (possibly intentional) set of failure modes.

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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Aug 01, 2019 at 07:00 PM Author: Lightingguy1994
Oh i see, thank you for clarifying, i think i read it wrong and thought you were trying to attack me or something. My apologies in return.

I share your dismay at the LED waves hitting world wide, believe me it has me busy trying to finish up my collecting efforts. No worries though i plan to keep my tubes that have that mercury or gas defect in them. When i do get that scope ill share on here for sure

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Aug 01, 2019 at 07:05 PM Author: Lightingguy1994
Here is a tube you may be interested in viewing. It works on most ballasts but it doesnt make any light except for a faint indigo colour. Its of course an alto lol

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Aug 01, 2019 at 07:07 PM Author: Lightingguy1994
Second pic here

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