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Old 11th January 2008, 02:53 PM   #34 (permalink)
solarmeter®
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Join Date: Nov 2004
Location: Lake St Clair
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Default Re: New 100 Watt Lamps - Meter at 18. Is this normal?

Trouble is... the sensor would have to be right where the person lies. Or - if it was way up close to the canopy it would just be measuring one lamp. I think some company tried that several years ago.

The other reason that wouldn't be very accurate is that a sensor constantly exposed to UV will solarize and lose sensitivity over time. Also dust and tanning lotion on a sensor will reduce the sensitivity.

Not saying it's impossible... just that for correct numbers readings should be taken at belly button position. And any kind of permanent sensor would obviously be in the way.
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