How to tell when CO2 in tank runs out?

[mackeith]

i like to know how to you tell if the CO2 in the canister runs out? totally no air when valave fully release? ( i dun have the dial indicator on my tank)

[Razorblade]

Usually you will have a valve to control the CO2, and the valve has the meter where you can see the amount of co2 thats remaining in your co2 cylinder and another to see the pressure...unless you are not using these valve or else you should be able to tell.

Cheers,

[tawauboy]

usually one would read the pressure gauge. as long as there is liquid co2 in the cylinder, ther pressure will be about 1000 psi. when liquid co2 has run out, the pressure will start to fall.

if you do not have a pressure gauge, you can tell whether there is still liquid co2 by weighing the cylinder when it is empty.