particulate
particulate


Author Comment Last activity Moderation
Jdahlen "Sorry for the late reply, but the Dusttraks and Dylos, to my knowledge, do not have sensor out-ports. If I would be able to see what the connector ..." | Read more » almost 10 years ago
mathew "yes, they are also optical, like the Dustduino and Speck, but they use lasers instead of focused LEDs. " | Read more » almost 10 years ago
warren "Hi, thanks for the post -- are the Dusttrak & Dylos optical devices, like the one the DustDuino project's using? http://publiclab.org/tag/dustd..." | Read more » almost 10 years ago
mathew "Also, I noticed your two Dusttrack monitors you're using had different air intakes (pic below). is the cyclone really important? would it improve ..." | Read more » almost 10 years ago
mathew "Cool! Does the dusttrack or dylos have a sensor-out port? I'm thinking we could hook it up to another data logger and collect humidity data on t..." | Read more » almost 10 years ago
mathew "The Speck team indicates that airflow is a big issue. they're controlling with a fan. If I move the Speck around just a little bit the values cha..." | Read more » about 10 years ago
alxmjo "Nice work. What sort of fan are you using to draw air across the sensor? Also, if anyone visiting this page would like to do something like this t..." | Read more » about 10 years ago
mathew "In my silica wiki page, I mentioned polarized light microscopy as a detection method, and yes, I'm looking into it. What you see here is polarized..." | Read more » about 10 years ago
donblair "Bryan, xxv, Chris, Dave -- thanks so much for the fantastic ideas and reflections you've developed here. I'm going to try to digest these ideas ov..." | Read more » about 10 years ago
btbonval "Those are great links, DavidMack. The TSI document illustrates the tube of air I was talking about that carries the sample for measuring ("sheath-..." | Read more » about 10 years ago
donblair " Ah, you didn't fail at all -- I just keep dithering about the final design, and have been hestitating to hit 'print' :) But I think this might be..." | Read more » about 10 years ago
warren "I know i've a quick trigger finger on the "like button", but i am so jazzed about this. Don, i failed to order your circuit boards, didn't I? I am..." | Read more » about 10 years ago
DavidMack "Okay, I read the research paper and the heat convection air flow dependent on the sensor orientation. I also found this report which describes the..." | Read more » about 10 years ago
DavidMack "I'd say the heater/resistor is used to heat the air sample to avoid condensation in the chamber and on the optics. Also, any aerosol (liquid and s..." | Read more » about 10 years ago
cfastie "Instead of trying to measure air flow, you could impose a constant air flow. Chris Bartley said they got better results with a small fan in their S..." | Read more » about 10 years ago
btbonval "It is unlikely that you can do anything to stop deposition, but you could slow it. Not sure what degree of "prevent" you were asking about. There a..." | Read more » about 10 years ago
xxv "Would there be a way to create a field or surface coating of the glass flow tubes that prevents accumulation of particles? " | Read more » about 10 years ago
btbonval "The linked anemometer relies on heat differential. I don't see the tech specs, but I'd be worried that in excessively hot environments the backgrou..." | Read more » about 10 years ago
btbonval "For reference, I have experience with Hach HHPC6 units (taking them apart, cleaning them, diagnosing their measurement capability, etc). I think yo..." | Read more » about 10 years ago
btbonval "Some of the particle counters I have used in the past worked on a straight, column of air. It looks like your box is more like a mixing chamber tha..." | Read more » about 10 years ago
donblair "Thinking about this a bit further: when determining particle counts, is the "% low pulse occupancy time" technique relatively insensitive to tempe..." | Read more » about 10 years ago
willie "Awesome commentary here. By popular demand: a dustduino wiki page: http://publiclab.org/wiki/dustduino Got to give the people...give the people ..." | Read more » about 10 years ago
mathew "I got some big (4"x8") sheets from american science and surplus. I was going to see what happens when I put some silica dust down on a flatbed wit..." | Read more » about 10 years ago
warren "We could use smartphone or laptop screens for polarized light, or steal 3d glasses from movie theaters. I guess polarized light isn't in short supp..." | Read more » about 10 years ago