What is the significance of using LEL meters in an industrial environment?

Using Lower Explosive Limit (LEL) meters in an industrial environment is critical for safety and preventing hazardous situations. These meters are specifically designed to detect explosive gases in the air. They measure the concentration of flammable gases and vapors, allowing operators to assess whether the levels are within a safe range or if they are approaching dangerous concentrations that could lead to an explosion.

When the concentration of a flammable gas reaches a certain percentage of the air (the lower explosive limit), it poses a significant risk, and immediate corrective actions must be taken to mitigate any potential accidents. By monitoring these levels continuously, industries can maintain a safer working environment, ensure that proper ventilation is in place, and implement emergency responses if necessary.

In contrast, the other choices do not pertain to the primary function of LEL meters. For example, measuring air temperature, monitoring water levels, and assessing humidity are handled by different types of instruments specifically designed for those purposes, highlighting the specialized role of LEL meters in gas detection.