What element is not typically monitored by final industrial effluent meters?

Final industrial effluent meters are designed to monitor parameters that directly indicate the quality and compliance of wastewater before it is released into the environment. While temperature is an important variable in many processes, it is generally not a critical parameter required for compliance monitoring of industrial effluents. Instead, pH, conductivity, and lower explosive limit (LEL) are more significant indicators.

pH is crucial since it affects the chemical behavior of pollutants, while conductivity can indicate the presence of various dissolved salts and ions, which can be critical for understanding the effluent's impact on receiving waters. LEL is monitored to ensure safety in handling flammable gases, but temperature does not typically reflect the toxicity or pollution load of the effluent.

Thus, temperature is often monitored in process control but is not a primary variable tracked by final effluent meters used specifically for regulatory compliance purposes. This distinction highlights the focus of effluent monitoring on parameters that directly relate to environmental protection and regulatory standards.