Definitions by Lynn Duffield

LEL 

Low Explosive Limit. Explosive Limits The range of concentrations (% by volume in air) of a flammable gas or vapor that can result in an explosion from ignition in a confined space. Usually given as Upper and Lower Explosive Limits (see UEL and LEL).

The LEL meter was downstream of the methanol tank.

LEL by Lynn Duffield January 25, 2005