ORP sensor

ORP sensors work based on the principle of redox reaction. When there are oxidants or reductants in the water, they will undergo oxidation or reduction reactions under the action of the ORP sensor, thereby changing the redox state of the water. By measuring this change, the ORP sensor can derive the redox potential of the water and then evaluate the redox state of the water.


Core components of ORP sensors

The core components of ORP sensors are ORP composite electrodes composed of indicator electrodes and reference electrodes made of precious metals (such as platinum or gold). When the sensor is immersed in a water sample, the oxidants and reductants in the water sample will undergo redox reactions with the surface of the indicator electrode, resulting in a potential difference on the electrode surface. This potential difference corresponds to the redox potential (ORP) in the water sample. By measuring this potential difference, the ORP value of the water sample can be obtained.


Features of ORP sensors

High measurement accuracy: can accurately sense slight changes in the redox potential in the water.


Fast response speed: can capture changes in the redox state in the water in a short time, and detect instantaneous fluctuations in water quality in a timely manner.


Strong anti-interference ability: adopt internal signal isolation technology, dual high impedance differential amplifier, etc. to reduce the impact of external interference on the measurement results.


Good waterproof performance: most of them have IP68 level waterproof performance, and can work stably for a long time in harsh outdoor environments.


Application areas of ORP sensors

Industrial wastewater treatment: help operators accurately grasp the redox reaction process in the treatment of toxic wastewater containing heavy metal ions, etc., adjust the treatment process in time, and ensure that the wastewater discharge meets the standards.


Natural water monitoring: continuously monitor the dynamic changes of key parameters such as dissolved oxygen and organic pollutants in rivers, lakes and other water bodies, provide data support for environmental protection departments, and maintain water quality safety.


Aquaculture: help breeders monitor the redox state of water bodies in real time, adjust the breeding environment in time, and improve breeding efficiency and survival rate.

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