| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| 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 | |||
| mathew | "I'm trying to think about how everything might go together for shipping-- I'd like to put the monitor in a plastic suitcase with a top panel cut to..." | Read more » | over 9 years ago | |||
| mathew | "@Danbeavers If you ream it you're right-- I was thinking about just a drill hole and that note. Vibrations on either a cheap drill or a poorly secu..." | Read more » | over 9 years ago | |||
| nshapiro | "+1 to the time relay delay it could be adhered to the belly of the pump. Digging the flow meter debate! " | Read more » | over 9 years ago | |||
| danbeavers | "Mathew: Why would you doubt the accuracy of a stepped bore? A reamer will provide very accurate hole size and ball bearings have very accurate di..." | Read more » | over 9 years ago | |||
| mathew | "@danbeavers hmm... the variability in the break and its effect on flow could be quantified with a more accurate flow meter. I wonder how variable ..." | Read more » | over 9 years ago | |||
| danbeavers | "Another approach to this problem would be essentially what Drager does. We could construct a manual vacuum pump. It would essentially be like a b..." | Read more » | over 9 years ago | |||
| danbeavers | "Thanks Nate for posting my thoughts. I wanted to comment on Mathew's idea of calibrating the pump before shipment. I assume what is meant is that..." | Read more » | over 9 years ago | |||
| 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 » | over 9 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 » | over 9 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 » | over 9 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 » | over 9 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 » | over 9 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 » | over 9 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 » | over 9 years ago | |||
| danbeavers | "On reversing the aquarium pump: Be sure and reverse both diaphragms! " | Read more » | over 9 years ago |