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Shanghai Qingmiao Optoelectronics Technology Co., Ltd
Online chlorine dioxide automatic analyzer DPD
NegotiableUpdate on 05/06
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Overview
Online chlorine dioxide automatic analyzer DPD KM-CL300 $r $n The role and characteristics of chlorine dioxide (ClO ₂): $r $n Mechanism of action: Through strong oxidative damage to microbial cell walls and enzyme systems, it has efficient killing effects on bacteria, viruses, and spores (such as Cryptosporidium). Advantages: Broad spectrum and high efficiency: Stable disinfection effect within the pH range of 6-10, not affected by ammonia nitrogen. $r $n has no by-products: it does not produce carcinogens such as trihalomethanes (THMs). Penetrating biofilm: Strong ability to remove microorganisms inside the biofilm. $r $n is suitable for high organic matter water quality, alkaline water, and situations where by-products need to be controlled.
Product Details
Online chlorine dioxide automatic analyzer DPDKM-CL300
Chlorine dioxide（ClO₂）Function and Characteristics:
mechanism of action：
Through strong oxidative damage to microbial cell walls and enzyme systems, it has a highly effective killing effect on bacteria and spores (such as Cryptosporidium).
advantage：
Broad spectrum and efficient: InpH 6–10The disinfection effect within the range is stable and not affected by ammonia nitrogen.
No by-productsBasically does not generate trihalomethanes（THMs）Waiting for carcinogens.
Penetrating biological membranesStrong ability to remove microorganisms within biofilms.
Suitable for high organic matter water quality, alkaline water, and situations where by-products need to be controlled.
l Drinking water treatment plantMonitor the residual concentration of chlorine dioxide in disinfection processes to ensure water quality safety.
l Sewage treatment systemControl the dosage of chlorine dioxide in the disinfection process, optimize the sterilization effect, and avoid excessive use.
l Food and beverage industryReal time concentration monitoring for production water and pipeline disinfection.
l Swimming pool water treatmentMaintain effective disinfection levels to prevent microbial growth.
l Industrial circulating water systemInhibit biofilm formation and prevent equipment corrosion.
l Hospital wastewater treatmentEnsure pathogen inactivation meets standards before discharge.
onlineDPDThe chlorine dioxide analyzer meets the requirements of on-site online analysis, using traditional and mature national standard detection methods, and has the advantages of miniaturization, integration, and automation.
Compliant with standards:
standard method：GB/T 5750.11-2006The disinfectant indicators in the "Standard Test Methods for Drinking Water"DPDSpectrophotometric method.
Detection PrincipleChlorine dioxide reacts with acidic conditionsDPD（N,N-Diethyl p-phenylenediamine reacts to produce a red compound, which is measured by colorimetry at a specific wavelength.
Display unit:mg/l
Measurement principle:
Add water sampleN,N-Diethyl-right-Phenylenediamine（N,N-diethy1-p-phenylenediamine, abbreviated asDPD）presentChlorine dioxide in water after coloring agentcanTranslate into EnglishDPDOxidation causes the solution to turn red, i.e. measuring its absorbance at characteristic wavelengths.
Features and advantages
National standard method, accurate measurement, good repeatability, stable and reliable; Equipped with automatic cleaning function;
It has excellent modular configuration, small size in appearance, and easy and simple installation. Connect the medication, sampling interface, and wastewater pipeline to operate;
Has an alarm indication for missing sample input; Long term automatic operation, low maintenance, and low operating costs;
A sturdy and sturdy casing designed specifically for industrial environments, ensuring optimal online operation and fully protecting electrical, mechanical, and liquid pipeline components;
Analysis time:3min; Medications used: Two types of medications
Sampling frequency (cycle time):5-120min, adjustable settings;
technical indicators
serial number |
rangeppm |
resolutionppm |
Occasions for use |
1 |
0-0.5 |
0.01 |
ROdeionized water |
2 |
0-2 |
0.01 |
Tap water, pool water |
3 |
0-5 |
0.01 |
Disinfection and cleaning water, circulating water |
4 |
0-20 |
0.1 |
wastewater |
5 |
custom-made0-2000 |
disinfectant |
accuracy ±5% F.S.
Detection limit 0.01 mg/L Cl2 , 25℃
measurement period 3min
power supply 220VACor12VDCThe24VDC
Installation method: wall installation or workbench support Operating Temperature5-45°C
Protection levelIP66, MaterialABS
Size:300Lx400Hx200mm weight:about3kilogram
Analog output: One channel4 – 20mA Digital output: RS485，MODBUS RTU
Alarm relay:1Road relay (over limit alarm)
Export sample pressure: atmospheric pressure (no back pressure)
Sampling flow rate of rapid circulation system:100 – 500ml/min
Connection: Sampling to fast loop system with flexible entrance, entrance6mmExport requires no back pressure.
inlet water pressure 0.3 - 3 bar, supplied to the filter analyzer Automatic water intake
water inlet Outer diameter φ6polyethylene pipe,quick coupling
drain outlet Outer diameter φ10hose
Sample Requirements belt40meshStainless steel mesh filter with mesh size or higher
sample temperature 5 - 40°C
Operating Humidity 0-90%Relative humidity without condensation
interfering factor Oxidants such as residual chlorine, total chlorine, permanganate, and ozone can cause positive errors.
Reagent consumption 31Use within the day0.5 LBuffer solution and0.5 LIndicator solution
Online chlorine dioxide automatic analyzer DPD
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