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Inside etch of my OSRAM HNT 202

Inside etch of my OSRAM HNT 202

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The inside etch of my OSRAM HNT 202 40W RPa

IMG_0007.JPG 20190702_134735_364.jpg 20190410_170411_268.jpg 20190409_161939_426.jpg

Light Information

Light Information

Manufacturer:OSRAM
Model Reference:HNT 202 40WRPa
Lamp
Lamp Type:Fluorescent Tube
Filament/Radiator Type:Low pressure mercury vapor arch
Shape/Finish:T12
Fixture
Location:My colection
Electrical
Wattage:40 watts
Voltage:Local current 220V AC 50Hz
Optical
Color Temperature:Cool white (Blanco Frio)
Color Rendering Index:>80
Physical/Production
Fabrication Date:1970 (?)

File information

File information

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Filename:20190410_170411_268.jpg
Album name:Binarix128 / My fluorescent tubes
Keywords:Lamps
File Size:279 KB
Date added:Apr 10, 2019
Dimensions:1643 x 2464 pixels
Displayed:55 times
URL:https://www.lighting-gallery.net/gallery/displayimage.php?pos=-158404
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dor123
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Apr 11, 2019 at 03:09 AM Author: dor123
How do you know that the etch is inside the lamp? I thought only the Americans and the Japanese ever made lamps with inside etch.

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.

rjluna2
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Robert


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Apr 11, 2019 at 05:28 AM Author: rjluna2
Yep, it is inside etch. You can see the outline of the absence phosphor coating where the ink was imprinted inside the tube.

Pretty, please no more Chinese failure.

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Apr 13, 2019 at 05:11 AM Author: Proteus
NICE!
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Apr 13, 2019 at 06:41 AM Author: monkeyface
Nice find! It is possible that this tube was made in January 1955 according the date code RPa. The only thing I don’t know is what the R as factory code means?
Binarix128
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220V AC 50Hz, 525@29,970i NTSC


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Apr 13, 2019 at 09:17 AM Author: Binarix128

NICE!

Thanks!

LED will never beat other lamps. Incandescent Lamp High Pressure Sodium Mercury Vapor Lamp
Color changing lamp Creator of CaptureCommons Color changing lamp

Binarix128
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220V AC 50Hz, 525@29,970i NTSC


GoL UCOUT2noI2R__jgPSJUjGRtA
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Apr 13, 2019 at 09:18 AM Author: Binarix128

Nice find! It is possible that this tube was made in January 1955 according the date code RPa. The only thing I don’t know is what the R as factory code means?

Wow, the tube is very old!

LED will never beat other lamps. Incandescent Lamp High Pressure Sodium Mercury Vapor Lamp
Color changing lamp Creator of CaptureCommons Color changing lamp

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