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kansabis
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Yeah I've got a galaxyhydro 300 and a small marshydro ufo waiting to be gutted to see if anything can be used elsewhere,of course the mars has a few diodes burnt out but none that I know of in the galaxy.
Exception I think!That's why the pics I always see of people saying they have a mars,etc and its doing great is in veg not flower lol
That temp reading will probably be off quite a bit due to the emissivity of that shiny aluminum. An old thermal engineering trick, either:Hottest board after 3 hours and a couple minutes.
LOL. Same thing I do at work. Don't know why I didn't it. Thanks.That temp reading will probably be off quite a bit due to the emissivity of that shiny aluminum. An old thermal engineering trick, either:
1. spray a little flat black paint on the spot you want to measure and take a reading there after it is dry.
2. Less destructive method: Spray some Dr. Scholls foot powder on it then take the reading.
3. Even some matte black electrical tape or something like that would probably get you close.
The idea is to make it closer to a back body surface....
These spot thermometers are very inaccurate if you don't prep the surface for a reasonable emissivity.
Dee
Yeah, I just built a 320W, 6 panel QB120 and I did the same measurement, hardly any heat and with the driver outside the room it runs super cool and the fixture is only 1.5" thick and 3 lbs. A really nice setup for a number of reasons, just love QB's. You get a true watt for a dollar or less (not specified 1200 watts when the thing is only drawing a true 200 watts like the lying bastards on ebay). In my case a 320 fixture that draws a true 320 from the wall and produces as much light as a 400-420 w HID or more.LOL. Same thing I do at work. Don't know why I didn't it. Thanks.
My 320 w 6 X QB120's are running at 102F on the PCB back (max temp).LOL. Same thing I do at work. Don't know why I didn't it. Thanks.
Hey @DGP , thanks for researching and checking out led lights in such great detail. It has been really helpful and convinced me to give them a whirl. Big ups my dude!
Temp guns aren't accurate on bare alum. Go to Harbor Freight and pick up a cheap multimeter that's capable of temp sensing.That temp reading will probably be off quite a bit due to the emissivity of that shiny aluminum. An old thermal engineering trick, either:
1. spray a little flat black paint on the spot you want to measure and take a reading there after it is dry.
2. Less destructive method: Spray some Dr. Scholls foot powder on it then take the reading.
3. Even some matte black electrical tape or something like that would probably get you close.
The idea is to make it closer to a back body surface....
These spot thermometers are very inaccurate if you don't prep the surface for a reasonable emissivity.
Dee