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teardown
teardown


Author Comment Last activity Moderation
asampra "I did this! Don't forget the springs. There are 3 sizes and four springs. So far the device corresponds to a duplicate system. Was reading very ..." | Read more » about 2 years ago
lord_of_all_sebastian "Haha yeah it was very surprising. Before I opened it I figured it was just a little dust. " | Read more » over 2 years ago
liz "haha! Were you surprised??? " | Read more » over 2 years ago
lord_of_all_sebastian "I had the same exact problem with my PMS 7003 sensor! I was getting suspiciously high particulate matter readings on a very clear day. I found this..." | Read more » over 2 years ago
kkoerner " Sure thing, I'll see if I can get something written up within the next week. " | Read more » about 3 years ago
liz " Hi @kkoerner, you wrote above that "Taking apart a PurpleAir and swapping out sensors is relatively easy, if there's a desire for a similar guide ..." | Read more » about 3 years ago
warren "Love this! " | Read more » over 3 years ago
nshapiro "This is great, Karl! So many people are using the PMS 5003 these days and probably wondering how to do this. I'm looking forward to circulating th..." | Read more » over 3 years ago
zengirl2 "@kkoerner so cool to see this post as well as the guts of the air sensor. Looking forward to the update on the results. " | Read more » over 3 years ago
danbeavers "So I can't spell and the spell check did not help much. Another thing to do is just appropriately scratch a small area on a fully reflecting mirro..." | Read more » about 9 years ago
cfastie "Dan's right that it's a monochromator in that it directs light of one color (a narrow band of wavelengths) through the sample and to the detector. ..." | Read more » about 9 years ago
warren "Wait, you think that it hits the sample with a monochromatic light source? I guess we could easily test that with a mirror, as you describe. That'd..." | Read more » about 9 years ago
danbeavers "It finally dawned on me that this machine is a monochronomater, attenuater, and photometer. To use it that way all you need to do is to bring out ..." | Read more » about 9 years ago
cfastie "The optical diagram for the Spectronic 20 from here. It has two lenses. Below, the optical diagram for the Spectronic 20+ from the official manua..." | Read more » over 9 years ago
warren "I see similar models for <$200 on ebay: http://www.ebay.com/sch/items/?nkw=spectronic+20&sacat=&ex_kw=&mPrRngCbx=1&udlo=&ud..." | Read more » over 9 years ago
straylight "and how much does that thing cost Jeff ? " | Read more » over 9 years ago