Boilers, cooling towers, and reverse osmosis (RO) systems are some of the most common systems that require monitoring and chemical treatment. Chemical treatment of boiler systems reduces scale, corrosion, and other mineral deposits. This enables the system to run more efficiently, keep heat transfer rates high and fuel costs down. To determine the proper amount of chemical to be injected into the water stream, samples of key parameters need to be taken. Instrumentation to measure ORP, pH, conductivity, temperature, pressure and flow are deployed to take these measurements.