The Planted Tank Forum - View Single Post - DIY PAR meter, Yeah you heard me

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post #9 of (permalink) Old 11-08-2010, 01:39 PM Thread Starter
mistergreen
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Join Date: Dec 2006
Location: Cincinnati
Posts: 16,216
Here's the spectral sensitivity of this photodiode. As you can see, not the best match




I did find a photodiode that fits the bill though
http://sales.hamamatsu.com/en/produc...part-g1118.php


It's $17 , I think. Maybe I'll get it one day... I couldn't pass up a $1.5 photodiode.

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