Measurement principle and characteristics of residual chlorine analyzer

The residual chlorine analyzer is a measuring instrument composed of a sensor and a secondary meter. It can measure residual chlorine, pH value, temperature, etc. at the same time. It is widely used in power, water plants, hospitals and other fields. Users need to master the product knowledge of the residual chlorine analyzer. The following editor will introduce the measurement principle and characteristics of the residual chlorine analyzer in detail, hoping to help everyone.

Measuring principle of residual chlorine analyzer

The electrolyte and the permeable membrane separate the electrolytic cell from the water sample. The permeable membrane can selectively allow ClO to penetrate. There is a fixed potential difference between the two electrodes, and the generated current intensity can be converted into residual chlorine concentration.

At the cathode: ClO + 2H+ 2e → Cl+ H2O

At the anode: Cl + Ag →AgCl + e

Since there is a fixed conversion relationship between HOCl, ClO and residual chlorine under certain temperature and pH conditions, residual chlorine can be measured in this way.

Features of residual chlorine analyzer

Chinese LCD display, Chinese menu, Chinese notes.

Prefabricated long life permeable membrane, easy to replace.

Waterproof and dustproof design: protection level IP65, suitable for outdoor use.

Electromagnetic compatibility (EMC/RFI) design: Designed and manufactured according to European standards EN50081/50082.

Alarm function: Alarm signal isolation output, alarm upper and lower limits can be set arbitrarily, alarm hysteresis cancellation.

Manual current source: convenient for recording and testing of detection devices.

Built-in real-time clock: provides time base for various functions, etc. Industrial control watchdog: ensures that the instrument will not crash.