Can you give me the formula to be used for calculating the final concentration in FM200 if I have the volume of the protected room and the weight of FM200. Normal temperature for the room. Sea level for elevation. units in cu ft and lbs or m3 and kg. I will make the conversion.

To determine the minimum required weight of gas required, Table A.5.5.1 (i )- US Units or (j )for SI Units) gives the conversion factor for weight of gas per volume of protected area. The conversion factor is based on extinguishing concentration and ambient room temperature.

To determine the final concentration, flow calculations are required utilizing the particular manufacturer's software. It takes into account length of pipe, discharge nozzle orifice size, amount of nitrogen to push the gas, etc.