| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| danbeavers | "Another observation: It would be good to have a check list for the measurement. For example: Verify that the humidity is above ?? and below ??..." | Read more » | over 9 years ago | |||
| danbeavers | "@Mathew The following is from a mechanical engineer friend of mine: Assuming you could pull a reasonably good vacuum on the orifice, you could ge..." | Read more » | over 9 years ago | |||
| danbeavers | "Mathew: That sounds like a mechanical engineer (which I am not) question. I SUSPECT that it will be the sum of the restrictions because of the lo..." | Read more » | over 9 years ago | |||
| nshapiro | "Here is a photo of the tip breaker that is on some of the analog pumps. We could also pre-score them in a standardized way to create consistent ope..." | Read more » | over 9 years ago | |||
| mathew | "@Danbeavers what if we put a standardized, small orifice on the broken end of the glass tube that is always smaller than a hole broken into the tub..." | Read more » | over 9 years ago | |||
| danbeavers | "Perhaps @Stevie could order them. " | Read more » | over 9 years ago | |||
| warren | "I'm arriving tomorrow -- if you could order those I'd buy them off of you when I arrive, or we could just order tomorrow night when I get in. I jus..." | Read more » | over 9 years ago | |||
| danbeavers | "The cheapest flow meters in the appropriate range that I could find: $18.90 http://www.ebay.com/itm/0-1-1-5L-Oxygen-Air-Flow-Meter-Gas-Flow-Meter-..." | Read more » | over 9 years ago | |||
| danbeavers | "Mathew: The "super simple" flow meter you linked to is what DavidMack was describing in the first post comment. That is real good to calibrate a ..." | Read more » | over 9 years ago | |||
| warren | "Actually that'd be super great. If they'd arrive before next Thursday, Nick and Mathew, could you send them to Propeller? Propeller c/o Public Lab..." | Read more » | over 9 years ago | |||
| mathew | "I have small plastic valves, had to order 5. I'll send one out. " | Read more » | over 9 years ago | |||
| warren | "Oh I see! I had read it as 2IN. My brains a little slow right now, sorry. I need to be watered. " | Read more » | over 9 years ago | |||
| nshapiro | ".1-1 is correct. I have three right now. i can send you one. but you would need to get the valves. my supplier just ran out. " | Read more » | over 9 years ago | |||
| warren | "1 VWR FLOW METER ACR 2IN.1-1LPM ($74.62 + shipping). Is that supposed to be 1-10 LPM? Thanks! " | Read more » | over 9 years ago | |||
| warren | "Just size, really. I have to order one of these too so I can use it in the video I'm working on. " | Read more » | over 9 years ago | |||
| mathew | "it has to be upright, yes. what other options are you thinking of? " | Read more » | over 9 years ago | |||
| warren | "OK, cool. Are there options for the flow meter Nick's used above, in terms of size, etc? It has to be upright, right? " | Read more » | over 9 years ago | |||
| mathew | "I think for the neck unit-- we need to have a flow meter in the flow. That is a perfect configuration to use in the buy your own kit, whereas we'r..." | Read more » | over 9 years ago | |||
| warren | "Hey @mathew, do you think the goose neck thing I put together is worth pursuing, or is compatible with the box idea you posted? Just want to know h..." | Read more » | over 9 years ago | |||
| mathew | "@danbeavers I am interested in making our data usable in court, but I'm also trying to be budget-sensitive. we're looking to mail these around fro..." | Read more » | over 9 years ago | |||
| nshapiro | "i actually have three of those pumps on my desk. they have a counter up to 10 and a thermal ring (that doesn't appear to work) for temp and a tube ..." | Read more » | over 9 years ago | |||
| danbeavers | "Answering my own question: "The KITAGAWA air sampling pump reproducibly draws 100cc of sample air" So that would be 90 pump cycles thus makiing i..." | Read more » | over 9 years ago | |||
| danbeavers | "Mathew: Perhaps I am not understanding some objectives here. Is the idea to be able to use one of our measurements in court? I doubt that that i..." | Read more » | over 9 years ago | |||
| nshapiro | "I think this looks great! The air intake is in one end of the tube. so we could have one less inlet to cut in the top panel and we could have it s..." | Read more » | over 9 years ago |