Upper explosive limit refers to combustible steam 、 Gas Or the highest concentration (concentration of combustible vapor and gas, calculated by volume ratio) that can cause explosion when the mixture of dust and air meets the fire source, and no explosion can occur when the concentration exceeds this concentration. The two "V" in the upper explosion limit% (V/V), the numerator "V" represents the volume of explosive gas, and the denominator "V" represents the total volume of gas mixture containing explosive gas.
Generally, explosive gas accounts for the explosion limit mixed gas Volume percentage. definition
The upper explosion limit refers to the highest concentration of combustible vapor, gas or mixture of dust and air that can explode when it meets the fire source (the concentration of combustible vapor and gas is calculated by volume ratio), and no explosion can occur beyond this concentration.
The two "V" in the upper explosion limit% (V/V), the numerator "V" represents the volume of explosive gas, and the denominator "V" represents the total volume of gas mixture containing explosive gas.
Generally, explosive gas accounts for the explosion limit mixed gas Volume percentage. 
