What does the acronym "LEL" signify on a gas detection meter?

The acronym "LEL" stands for "Lower Explosive Limit." This term is commonly used in the context of gas detection and safety monitoring. The Lower Explosive Limit refers to the lowest concentration of a gas or vapor in the air that can ignite and cause an explosion when an ignition source is present. Understanding LEL is crucial in various industries, particularly those dealing with flammable substances, as it provides essential information for assessing hazards and ensuring workplace safety.

Monitoring gas concentrations in relation to their LEL helps safety personnel determine whether the environment is safe for workers and if any necessary mitigation measures need to be implemented. Gas detection meters are equipped to measure concentrations of various gases, ensuring that personnel are alerted before levels reach unsafe conditions that could lead to explosions or fires.