Product Overview:

The MS5100 multi-parameter online analyzer is an integrated water quality monitoring platform launched by Hash Company, capable of continuously monitoring seven key water quality parameters: residual chlorine, chlorine dioxide, turbidity, pH, ORP, conductivity, and temperature. This instrument adopts a modular series flow path design and advanced sensing technology, integrating multiple measurement functions into one, significantly saving installation space and water consumption, making it an ideal solution for water treatment process control and water quality safety monitoring.

Working Principle:

● Residual chlorine/chlorine dioxide measurement: Electrochemical measurement method is used, using a filmless electrode. Free chlorine, or free active chlorine, is defined as the sum of molecular chlorine (Cl2), hypochlorous acid (HClO), and hypochlorite ions (OCl-). When the pH is less than 4, it mainly exists in the form of hypochlorous acid molecules. At different pH levels, hypochlorous acid and hypochlorite ions are in a dynamic equilibrium. When a potential is applied, hypochlorous acid molecules are reduced to chloride ions at the working electrode, creating a current loop between the working electrode and the opposing electrode. Under constant conditions, the current generated is proportional to the free chlorine concentration.

● Turbidity measurement: When the water sample enters the turbidity chamber, the detector emits a beam of light that is shot vertically into the sample. When the light encounters suspended particles in the sample, scattering occurs. The photoelectric detector immersed in water detects the scattered light at a 90° angle to the centerline of the incident light. The intensity of the scattered light is proportional to the turbidity of the water sample, allowing turbidity measurement by detecting the 90° scattered light intensity. When water samples enter the turbidity meter, they first flow through the baffles of the bubble collector, enter the turbidity measurement chamber, and then overflow from the overflow outlet into the drainage pipeline. This defoaming system allows bubbles in the water sample to be adsorbed onto various surfaces of the refracted flow system, or slowly rises to the surface with the water flow and is released into the atmosphere.

● pH measurement: The pH electrode consists of two parts: the indicator electrode and the reference electrode. pH measurement is achieved by measuring the potential between the indicator and reference electrodes. When the pH electrode contacts the solution, a potential that changes with pH changes forms on the glass membrane, and this potential requires another constant voltage for comparison. The reference electrode is used to provide this constant potential, and it does not change with the concentration of pH in the solution. pH measurement compensation is performed by measuring the water sample temperature.

● ORP measurement is completed by electrodes that absorb or release electrons on the sensitive layer surface, using the same silver/silver chloride electrode as the reference electrode and pH electrode.

● Conductivity measurement is achieved by placing two discs (conductive plates) into the sample solution and applying voltage to the discs to measure current.

Instrument Features:

• Multi-parameter integrated monitoring

  One instrument simultaneously monitors seven water quality parameters, saving space and reducing overall costs.

• Water-saving design for the series flow path

  Adopts a series flow path and dynamic water-saving mode to significantly reduce sample water consumption and meet environmental operating requirements.

• Automatic cleaning of residual chlorine electrodes

  Equipped with an automatic cleaning mechanism to extend electrode lifespan and reduce maintenance frequency.

• Modular block-style structure

  The electrochemical flow cell and electrodes use a flange-sealed design, making assembly and disassembly easy and maintenance simple.

• First, the foam removal system

  The turbidity measurement unit is equipped with a baffle-type bubble collector, effectively eliminating bubble interference and ensuring data accuracy.

• Automatic temperature compensation

  All parameter measurements undergo real-time temperature compensation to ensure data accuracy under different water temperature conditions.

Application Areas:

Applied in drinking water pipelines, secondary water supply, and rural drinking water.