HACH Hash MS5100 Multi Parameter Online Analyzer

NegotiableUpdate on 02/12

Model

Nature of the Manufacturer: Producers

Product Category

Place of Origin

Online Consult

Overview

Product features: Adopting an integrated design and occupying a small area. Continuous monitoring includes residual chlorine, chlorine dioxide, turbidity pH、ORP、 Conductivity and temperature are 7 water quality parameters. $r $n • The flow path adopts a series flow path to meet the water saving needs of customers $r $n • The residual chlorine automatic cleaning mechanism has a longer maintenance cycle $r $n • The electrochemical flow cell has a modular structure that is easy to disassemble and assemble, and the pH, conductivity, and ORP electrodes are sealed with flanges for easy disassembly and assembly $r $n • It supports dynamic water-saving mode

Product Details

working principle

• Measurement of residual chlorine/chlorine dioxide: Electrochemical measurement method is used, using a non membrane 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 values, hypochlorous acid and hypochlorite ions are in a dynamic equilibrium state. 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 counter electrode. Under constant conditions, the generated current is proportional to the concentration of free chlorine.

Turbidity measurement: The water sample enters the turbidity chamber, and the detector emits a beam of light vertically into the water sample. When the light encounters suspended particles in the water sample, it scatters. The photodetector immersed in the water detects scattered light at a 90 ° angle to the center line of the incident light. The scattered light intensity is proportional to the turbidity of the water sample, and turbidity measurement is achieved by detecting the scattered light intensity at 90 °. The water sample entering the turbidity meter first needs to flow through the layer by layer baffles of the bubble trap, enter the turbidity measurement chamber, and then overflow from the overflow port into the drainage pipeline. The defoaming system allows bubbles in the water sample to be adsorbed onto various surfaces of the baffle system, or to rise to the water surface and be released into the atmosphere as the water slowly flows.

• 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 the reference electrode. When a pH electrode comes into contact with a solution, a potential that varies with pH is formed on its glass film, and this potential requires another constant potential for comparison. The reference electrode is used to provide this constant potential, which does not change due to the concentration of pH in the solution. Compensate for pH measurement values by measuring the temperature of water samples.

ORP measurement is completed by electron absorption or release on the surface of the sensitive layer through electrodes, and the reference electrode uses the same silver/silver chloride electrode as the pH electrode.

Conductivity measurement is achieved by placing two disks (conductive disks) in the sample solution and measuring the current by applying voltage to the disks.