What is 10% LEL?

What does 25% LEL mean?

Lower Explosive Limit (LEL) The lower explosive limit in air measured in percent by volume at room temperature. The minimum concentration of gas or vapor in the air below which the substance will not burn or explode. Below this concentration, the mixture is too "lean" to ignite or explode.

How many ppm is 5% LEL?

% LEL means the lower limit of explosion, that is, in which concentration will the combustible gas explode when it meets fire. It is worth noticing that this unit is not a natural unit, but the lower limit of the explosion is divided into one hundred parts, one part for 1% LEL.

What is 1% LEL?

We generally consider its LEL (lower explosive level) to be 5% by volume (5% bv). The mixture is too lean to burn if less than 5% methane is present. But at 5%, we can burn or explode if there is an ignition source. So we call 5% bv methane the same as 100% LEL.