Product Information
- Name : pH meter
- SKU : BLT-61
- Category : ph-meters
A pH meter, also known as an acidity meter, is an analytical instrument used for precisely measuring the acidity or alkalinity of a solution. It relies on a compatible pH electrode to collect hydrogen ion concentrations in water samples, pharmaceutical liquids, or chemical fluids, converting the potential signal into a pH value within the range of 0 to 14. It comes in three types: portable handheld, benchtop laboratory, and industrial online models. It provides direct digital readouts and can be paired with an automatic control system to output standard signals for coordinating dosing equipment. It is widely used for monitoring and managing the acidity and alkalinity of various water qualities and solutions.
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Working Principle
When the internal reference electrode and the measuring electrode of the pH electrode come into contact with the tested liquid, a potential difference is generated. The instrument's mainboard amplifies and processes this weak potential signal, then compares it with the calibration curve of standard buffer solutions to calculate the corresponding pH value. For online pH meters, the detected data can also be converted into electrical signals and transmitted to a PLC control cabinet. Based on the set pH threshold, the acid-base dosing device is automatically started or stopped, enabling fully automatic regulation of water acidity and alkalinity.
Application Fields
1. Wastewater Treatment: Real-time monitoring of pH levels in wastewater tanks and control of chemical dosing.
2. Pure Water Production: pH detection of inlet and outlet water in reverse osmosis and deionized water equipment.
3. Chemical Industry: Monitoring of acid-base ratios and reaction processes of chemical materials in reaction vessels.
4. Electroplating and Coating: pH control of electroplating bath solutions and phosphating tank solutions.