Im borrowing this from a buddy for a party tonight. The fill meter goes up to 3000, it's now at about 900. Is that enough for 2 logs? Or should I get more gas? And no I can't ask the owner, he's useless lol.
the high pressure gauge doesn't tell you much. it indicates the pressure of the gas in the bottle, not the amount of gas in the bottle. the gauge will drop off rapidly once all the liquid CO2 is used up. the pressure will change with temperature change as well. the answer to your question is simple however. yes, you will run out of gas. plan on not having enough gas. get a refill or exchange. and return the rig with a full bottle. this is how the world works sometimes. Cheers.
That's cold for someone who's loaning out his beer-kit . . . (notice I didn't say inaccurate!) The advice from billandsuz will certainly keep the beer going . . . but there's a work around. Somewhere on the tank the symbol "TW", followed by a number is stamped (usually on the neck). This is the tare weight, or empty weight. You can weigh the tank and subtract the tare weight (plus reg is about 2 lbs) and that's the amount of liquid gas remaining. If it's a big number you'll probably be able to push several logs. Carbon dioxide is gaseous at normal pressure. So the liquid CO2 in your tank is "boiling" until the pressure is high enough to keep it a liquid. This is temperature dependent and never exceeds ~1030psi no matter how hot (the 3000 psi gauge is a generic gauge, will never go that high). Your reading of 900 psi tells me the tank temp is around 75 degrees. The amount of liquid CO2 could be as little as 2 ounces (skinny, maybe a log?) or 20 pounds (fat, multiple logs). Your scales are your friend. Whatever you do, don't turn the tank upside down with the valve open . . .
