Author Topic: What is the chemistry of the Osram HQI-TS 70W/WDL Excellence?  (Read 2122 times)
dor123
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What is the chemistry of the Osram HQI-TS 70W/WDL Excellence? « on: April 11, 2016, 11:36:11 AM » Author: dor123
Apart from the lithium, sodium and thallium, the background of the spectrum looks to much continuous to be rare-earths.
Anyone know what other halides this lamp have apart from the said halides?

Picture that I made: http://www.lighting-gallery.net/gallery/displayimage.php?pos=-118843
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Medved
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Re: What is the chemistry of the Osram HQI-TS 70W/WDL Excellence? « Reply #1 on: April 12, 2016, 03:49:16 AM » Author: Medved
High arc loading continuum background?
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lights*plus
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Re: What is the chemistry of the Osram HQI-TS 70W/WDL Excellence? « Reply #2 on: April 17, 2016, 04:44:11 AM » Author: lights*plus
See Here..click on Graphics and application images lower down. Medved might be right.
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Re: What is the chemistry of the Osram HQI-TS 70W/WDL Excellence? « Reply #3 on: May 15, 2016, 06:11:05 PM » Author: James
The Osram WDL series are filled with Tin, Sodium and Thallium halides.  The tin provides a broad molecular radiation, sodium serves to lower the colour temperature, and thallium (green) brings the colour point onto the blackbody locus to achieve a white colour light.  There is also a strong red peak in your spectrum - that is lithium, which exists as an impurity that comes out of the quartz wall.
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Re: What is the chemistry of the Osram HQI-TS 70W/WDL Excellence? « Reply #4 on: May 15, 2016, 07:19:44 PM » Author: lights*plus
According to the linked spectrum in my April 17 reply, except for the lithium peak, the rest looks very similar to the spectrum of a CosmoWhite 140W/628 lamp
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dor123
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Re: What is the chemistry of the Osram HQI-TS 70W/WDL Excellence? « Reply #5 on: May 16, 2016, 02:15:00 AM » Author: dor123
My lamp have Ra8=67 and 3300K (630 color), and takes 2 mins to run-up and 4 mins to restrike on my Philips Primavision ballast, but it is a quartz MH lamp and for indoor tracklights and downlighters, so it must have different background halides than the cosmowhite. The cosmowhite I think have mercury-sodium-thallium-cerium. I know that the single ended HQI-T 70W/WDL have Hg-Na-Li-Tl-In-Sn, but I think that this isn't true for my lamp.
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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 international date format (dd.mm.yyyy).

I lives in Israel, which is a 220-240V, 50hz country.

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