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All There Is to Know About pH Controllers

Do you run an industrial or commercial operation that generates water? It could be something like food processing, waste control, hydroponics, water purification, service stations, car wash operations or swimming pools. Measurement and treatment of the water from your operation are important for the environment and compliance with government regulations on water treatment and management. pH controllers are essential for such operations. These systems are designed to measure and control acidity and alkalinity levels in the water, keeping it neutral and ensuring it's not corrosive or harmful. Therefore, knowing a thing or two about pH systems will be useful in your operation.

pH Control Systems Have Two Main Control Types

Generally, pH control systems function by monitoring the pH levels and activating pumps that release specific chemicals in a certain amount to neutralise the pH levels when they go beyond the set limits. Usually, this is done through limit control or proportional control. Limit control systems work on a steady-rate basis. The chemical dose released does not depend on the deviation of the pH level from the preferred levels. Instead, it is released at a fixed and steady rate. Steady-rate errors are some of the major drawbacks of this type of control system because of the possibilities of overdosing or underdosing. For applications that require careful control of effluent water, such as in agricultural applications and swimming pools, proportional control systems are the perfect solution. These systems provide control based on the pH level where dosing reduces as the pH levels reach the set limit and vice versa.

Interface Options Also Vary

You can choose between analogue gauges and digital displays. Analog gauges or meters are the least expensive, making them ideal if you are concerned about your budget. They feature basic visual indicators such as needles. The major downside with analogue gauges is that they do not offer the same operational control efficiency that comes with their digital counterparts. On the other hand, digital displays are more expensive, but they offer more flexibility when setting up controls. Most of them have things like menus, digital keypads and display screens that make it easy to set up controls and monitor the pH levels. For even better results, go for digital controllers with the ability to record data for tracking purposes.

The Chemical Used in The Neutralisation Process Matters

Different chemicals can be used to bring the pH levels to the required limits. Generally, carbon (IV) oxide or carbon dioxide is preferred. It is less toxic, readily available, easier to transport and store and less expensive than other chemicals. Contact a company that offers pH controller services for more information.