CO2

[fatsax]

mig welders ideally run at about 15psi so should be ok

fatsax Reviewed by fatsax on 07-21-2007. CO2 so what the simplest and cheapest way to provide co2 for a growroom?i expect the air around here is 500 to 600 ppm since i am right on a busy main road near a town centre in a city...last time i tested a different grow room in flower i still got a decent 400 ppm and all that was exhausting i ntheir was a decent sized air pump getting rid of air into the attic and it was only a small room packed full of blueberry.... what about this sugar/yeast/water idea? what about burning candles in the Rating: 5

[Opie Yutts]

The CAP units are GE Telaire sensors. If you're familiar with PIC or something similar you should have no problem setting up a test loop and tripping a relay.

Hmm. Maybe you could help me. I bought a GE Telaire ventostat to control my co2 generator using PPM as a shut-off instead of a timer. I also bought the $55 software you need to program the unit. I can't for the life of me figure out how to set this up. I know I need to do some wiring, but electronics class was 25 years ago.

[the image reaper]

every MIG welder I ever used, the gas-flow regulator was adjustable from Zero-up ... simple glass-tube 'floating ball' gauge ...

interesting side-note: reading an interview with some 'famous' breeder (forget which one) he stated that CO2 was the 'last' thing to worry about ... he stated that CO2 only helps, IF everything else was spot-on perfect ... using that logic, I assume I will 'never' be worrying about installing it ... I use the simple water/sugar/yeast bottle ... may not help much, if at all, but is cheap and easy ... that's me, 'cheap and easy' :S2:

[khronik]

Keep in mind, you get almost four times as much CO2 from burning a tank of propane as you would from releasing a tank of pure CO2, assuming they both weight the same. Most of the mass of CO2 comes from the oxygen part.

[TestPilot]

Hmm. Maybe you could help me. I bought a GE Telaire ventostat to control my co2 generator using PPM as a shut-off instead of a timer. I also bought the $55 software you need to program the unit. I can't for the life of me figure out how to set this up. I know I need to do some wiring, but electronics class was 25 years ago.

Opie,

I assume you purchased the 8001 or 8003, non-keypad models. You'll need to program the setpoint and hysteresis and use the normally open relay contacts (2A max) to control your equipment. Might need another, larger relay if you expect to draw more than that.

http://www.gesensing.com/downloads/m...nglemanual.pdf

[TestPilot]

every MIG welder I ever used, the gas-flow regulator was adjustable from Zero-up ... simple glass-tube 'floating ball' gauge ...

They run from zero up, but in what increments? The accuracy isn't there.

[Opie Yutts]

Test pilot, thanks a bunch for that link, I'll look at it better when I'm not so..*%#45????