What is typically used to monitor chlorine levels in water?

A chlorine analyzer is specifically designed to measure the concentration of chlorine in water. It provides accurate readings of free or total chlorine levels, which are critical for ensuring that water is treated properly and is safe for consumption. Monitoring chlorine levels is essential because it serves as a disinfectant in water treatment processes, helping to eliminate harmful pathogens.

In contrast, a pH meter measures the acidity or alkalinity of water but does not provide information about chlorine levels. A turbidity sensor assesses the cloudiness of water due to suspended particles, which is unrelated to chlorine concentration. Lastly, a conductivity meter measures the ability of water to conduct an electric current, which can give insights into the ionic content of the water but is not specific for chlorine levels. Therefore, the most appropriate and reliable instrument for monitoring chlorine in water treatment is indeed the chlorine analyzer.