Author Topic: Question about the chemistry of the Osram HCI-TS 70W/830  (Read 1998 times)
dor123
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Question about the chemistry of the Osram HCI-TS 70W/830 « on: August 31, 2024, 02:28:07 PM » Author: dor123
Why the HCI-TS 70W/830 like most 830 CMH lamps have Dy-Ho-Tm-Tl-Na, while the Osram HQI-TS 70W/WDL Excellence and Philips MHN-TS 70W/730 have Dy-Tl-Na only?
@RRK and @James may know?
« Last Edit: August 31, 2024, 05:48:55 PM by dor123 » Logged

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Re: Question about the chemistry of the Osram HCI-TS 70W/830 « Reply #1 on: September 01, 2024, 07:35:36 AM » Author: James
The HCI lamp operates about 200 celsius hotter than the HQI, which increases the halide vapour pressures and causes improved colour rendering - but also shifts the colour point to much lower colour temperature.  A modification of the fill chemistry is required to bring the colour back to the desired point.
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dor123
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Re: Question about the chemistry of the Osram HCI-TS 70W/830 « Reply #2 on: September 01, 2024, 08:24:16 AM » Author: dor123
Ah. But with the 842 QMH and the 942 CMH, the chemistry is the same Dy-Ho-Tm-Tl-Na.
And also @James: Why there are no 5000-6500K CMH lamps?
« Last Edit: September 01, 2024, 11:04:42 AM by dor123 » Logged

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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