pH is a critical parameter to monitor and control in cooling tower water to avoid build up of silica and calcium carbonate scale. Inhibitors are added to cooling towers to reduce scale, however, they are ineffective if not within the specified pH range.
pH sensors are often located in remote areas for power generation applications. Sensor maintenance can be minimized with the appropriate sensor design, in particular, the housing material, reference junction, and reference electrolyte. This is critical as sensors are often located in remote areas.