gas
gas


Author Comment Last activity Moderation
nshapiro "@danbeavers just sent me a great email about cheap flow meters. he told me I could repost it, so am putting it here: "I have been thinking/researc..." | Read more » about 7 years ago
nshapiro "Gotcha. In my testing in 2011 i did some of the test and mailed test kits to those i couldn't meet in person. altho it wasn't statistically signifi..." | Read more » about 7 years ago
mathew "The vintage timers are probably far too massive. I'm not as worried about tampering as I am about good faith forgetfulness-- I don't always hear t..." | Read more » about 7 years ago
nshapiro "This is great. The vintage timers are pretty amazing although they add a lot of weight and thus money and are not tamper proof. We could just inclu..." | Read more » about 7 years ago
mathew "following up on our discussion about trying to calibrate the pump without the flow meter-- could we calibrate the pump at our office, and then have..." | Read more » about 7 years ago
danbeavers "Oh, I was making assumptions. I had not seen a pump that was set up to have 2 different attach points. So never mind about my comment! " | Read more » about 7 years ago
nshapiro "@danbeavers were you using the whisper pump or another pump? I think the whisper pump can handle one pump and one vacuum if need be " | Read more » about 7 years ago
danbeavers "On reversing the aquarium pump: Be sure and reverse both diaphragms! " | Read more » about 7 years ago
warren "Hi, Nick - I'm working on some sketches of the kit; do you have any photos of the entire thing, just a bit more zoomed out? Thanks! " | Read more » over 7 years ago
mathew "I just bought the air pump components and a graduated cylinder to try and compare @davidmack's cheapo air meter... can't wait. I'm going to try us..." | Read more » over 7 years ago
christad92 "Thanks. I'll check those links out.I hope they will be of great help " | Read more » over 7 years ago
Nashblackcat "http://www.jhnewsandguide.com/news/cops_courts/amerigas-leak-grew-fast/article_5446c51b-aa2e-5a3d-b07d-985967fc052e.html This is one recent news i..." | Read more » over 7 years ago
Nashblackcat "The stations themselves are not the only hazard : http://www.csb.gov/little-general-store-propane-explosion/ You would be amazed about how lacking..." | Read more » over 7 years ago
muyueh "Thanks for all your comment. Some firefighters actually died because they were not sure of the cause of the explosions, I would like to think that ..." | Read more » over 7 years ago
stevie "This is incredible. I'm so sorry about what happened. You did an excellent job capturing the visual data and brining it to the public's eye. " | Read more » over 7 years ago
eustatic "wow. thanks for all of your work. " | Read more » over 7 years ago
liz "Hi Muyueh, i am so sorry to hear about this tragedy. Your map is incredibly well-made. Now that you have exported it, you can add annotations to th..." | Read more » over 7 years ago
nshapiro "I think so. Those tubes require one pump on the Draeger Tube proprietary pump. So if one were to rent their proprietary pump for a single day and a..." | Read more » over 7 years ago
sara "Exciting stuff! Do you think this method could work for other pump based tubes like these http://www.buydraegertubes.com/hydrogensulfide02b.aspx " | Read more » over 7 years ago
kensanfran "I just posted a second Research Note on this project which covers basic board information and some initial real-world field data. http://publiclab..." | Read more » over 7 years ago
nshapiro "That sounds like a great idea. The flow meter remains the most expensive component so reducing this cost is clutch. This sounds like something that..." | Read more » over 7 years ago
kensanfran "Hi Neil, Thanks for your nice comments. Yes, I think the general issue of data quality from citizen science sensors is finally starting to get the..." | Read more » over 7 years ago
DavidMack "The commercial air flow meters are easy to use and come with NIST traceable certificates but you can make your own air flow meter for lab use that ..." | Read more » over 7 years ago
nbmasson "Nice work! Looks like a clean and well-designed module. FYI, you can find some more open-source info at http://mobilesensingtechnology.com/ with s..." | Read more » over 7 years ago