pH Sensor

Measuring acidity and alkalinity to protect processes, equipment, and the environment.

What Does a pH Sensor Measure?

A pH sensor measures the acidity or alkalinity of a liquid, expressed on a logarithmic scale from 0 to 14. pH is a critical chemical parameter that influences corrosion, reaction rates, biological activity, and regulatory compliance.

Working Principle

pH sensors operate by measuring the electrochemical potential generated between a pH-sensitive glass electrode and a reference electrode when immersed in a solution. The voltage difference is proportional to the hydrogen ion concentration.

Common Types of pH Sensors

Signals & Outputs

Direct & Indirect Meaning of pH Data

Direct Meaning

The measured value directly represents the acidity or alkalinity of a liquid process or sample.

Indirect Meaning

pH trends indirectly indicate corrosion risk, chemical dosing effectiveness, biological health in treatment systems, and potential regulatory violations.

Industries Using pH Sensors

Role of IoT in pH Monitoring

With Industrial IoT integration, pH sensors enable continuous water chemistry monitoring, automated chemical dosing control, remote alarms, and long-term compliance reporting.

IndustrioPedia Perspective

The pH Sensor is a chemical guardian of industrial systems. By keeping acidity and alkalinity within safe limits, it protects equipment, processes, ecosystems, and human health.