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What are pH control systems?

May 13, 2026 MURAT ŞENTÜRK

pH control systems are automatic or manual systems used to maintain a liquid's acidity or alkalinity (pH value) within a specific range. They are widely used in industrial and water treatment applications because pH levels directly affect corrosion, scaling, biological growth, and chemical reactions.

1. Basic Principle

A pH meter or sensor continuously measures the liquid's pH value.
If the value is outside the target range, the system automatically doses acid or base.
This keeps process water or other liquids at a safe and efficient pH level.

2. Areas of Use

Water treatment and boiler water systems: Prevents corrosion and scaling.
Cooling towers: Controls biological growth and scaling.
Chemical industry: Increases reaction efficiency and maintains product quality.
Food and pharmaceutical industry: Hygiene and quality control in production processes.

3. System Components

pH sensor / probe: Measures the real-time pH value of water or liquid.
Control unit: Processes data from the sensor and manages the dosing pump.
Dosing pump: Adds acid or base chemicals to the liquid.
Alarms and data logging: Alerts if pH values reach critical levels and keeps reports.