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Osram L 36W/640

Osram L 36W/640

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For those who likes it black. This tube sat in a fixture in a underpass. The starter was stuck propably for years leaving the tube in the incandescent mode.

C54B6670-74E8-4AC0-8D13-415C0C3BDB4B.jpeg 12EF57F8-5D7D-44A6-9C2F-F1B5DE23532C.jpeg 5AFD57C3-0BDC-4FEB-9846-313B9CB1AD51.jpeg IMG_6549.JPG

Light Information

Light Information

Manufacturer:Osram
Model Reference:L 36W/640 Energy Saver
Lamp
Lamp Type:Fluorescent lamp
Base:G 13
Shape/Finish:T8
Fixture
Ballast Type:Switchstart
Electrical
Wattage:36W (32W on electronic ballast)
Optical
Color Temperature:4000K
Color Rendering Index:CRI Ra 66
Physical/Production
Factory Location:Augsburg Germany
Fabrication Date:2000’s
Application/Use:General lighting Basic

File information

File information

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Album name:monkeyface / Light Sources
Keywords:Lamps
File Size:887 KB
Date added:Jan 11, 2019
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Date Time:2019:01:11 16:26:44
DateTime Original:2019:01:11 16:26:44
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Silverliner
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Verd a ray classic.


GoL
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Jan 11, 2019 at 05:45 PM Author: Silverliner
Literally jet black!!!

May all the great lighting technologies have their place in history.

Administrator of Lighting-Gallery.net. Need help? PM me.

xmaslightguy
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^homebuilt fixture


GoL ATL
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Jan 11, 2019 at 06:16 PM Author: xmaslightguy
Wow talk about blackened is the end!

Colored Fluorescent's such as F40T12 Red or  Green or Blue are awesome...

sol
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Jan 11, 2019 at 07:53 PM Author: sol
How did the ballast make out ?
monkeyface
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Wolfram Verdampfungsgefässe


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Jan 11, 2019 at 11:49 PM Author: monkeyface
Surprisingly the ballast survived so far, only the white paint discoloured a bit. Undoubtedly it had a hard live to wreak the tube to this state but it still runs now a new lamp in a corniche fixture.
Max.
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Jan 12, 2019 at 02:21 AM Author: Max.
Such degree of end blackening is quite impressive! How often do you maintain those underpass luminaires in your city?
monkeyface
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Wolfram Verdampfungsgefässe


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Jan 12, 2019 at 02:42 AM Author: monkeyface
In our city I shedule the replacements every two years for fixtures with TLM lamps and every three years for those with T8 lamps.

These two lamps are from a third-party municipality owned underpass were we do the maintenance under contract and since the tube next to the dead one was still working I did not open the vandal proof fixture till the second one reached end of life.
Max.
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Jan 12, 2019 at 02:48 AM Author: Max.
I see, thanks for the details Michael. In my city (Eindhoven) they have longer maintenance cycles as they use Philips's TLD Xtreme tubes (and their Aura LongLife equivalent some years ago).
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Wolfram Verdampfungsgefässe


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Jan 12, 2019 at 06:51 AM Author: monkeyface
You’re welcome Max!
We decided to keep the maintenace period short because of the dirt which is collected in some old fixtures blocking some light. In never underpass lights like the Zumtobel Tubilux we do have 4 years periods.
The Aura lamps I’ve seen only on trainstations/ and platforms.
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Jan 12, 2019 at 10:19 AM Author: Proteus
W O W ...

Is this filament still intact? It would be interesting to leave it for some years more in incandescent mode!
dor123
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Other loves are computers, office equipment, A/Cs


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Jan 12, 2019 at 10:39 AM Author: dor123
The ballast will burn if the lamp left long with a stuck starter.

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 230V, 50hz country.

Proteus
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Jan 12, 2019 at 10:41 AM Author: Proteus

The ballast will burn if the lamp left long with a stuck starter.

Not always, as you clearly see in this case!
rjluna2
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Robert


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Jan 12, 2019 at 02:05 PM Author: rjluna2
Looks like it was really hammered with good bulb construction

Most of these lights where I work tends to hammered until it looses its vacuum since they are electronic ballast which doesn't use the preheating mode.

Pretty, please no more Chinese failure.

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Wolfram Verdampfungsgefässe


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Jan 12, 2019 at 02:32 PM Author: monkeyface
Usualy I find only T12 tubes in a similar state like this but then they already loose vacuum but this one not! I’m going to try this lamp on a testing rig. Let’s see what’s happening...
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Jan 13, 2019 at 03:54 PM Author: sol
Was it in 24/7 service or did it have a photo control ?
TL buis
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Jan 20, 2019 at 04:46 AM Author: TL buis
Hi Michael, Is more black possible?? I don't think so. Was it still glowing when you arrived??. What is the date code, I assume that it is older than 4years because 640 is banned for long time ( Or old stock??)
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Wolfram Verdampfungsgefässe


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Jan 20, 2019 at 04:55 AM Author: monkeyface
These were running on photo control.
The thing is that I’m doing the maintenance for the village’s streetlighting now for about 6 years but it was the first time I went to the underpass to replace these tubes. So they are a way longer in use than 4 years. The blackened one did not glow anymore but the other did - with a stuck starter as well.
I must admit both have very good ballasts as they did not burn out yet in this condition.
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