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Multi-Parameter Water Quality BOD TOC COD Sensor

This LMS-COD100 series water quality sensor (including LMS-COD100H and LMS-COD100L models) adopts ultraviolet absorption technology to realize integrated detection of five key water quality parameters including COD, TOC, BOD, turbidity and temperature. It supports digital RS-485 output and Modbus protocol, enabling seamless access to various automation and IoT monitoring systems. With a reagent-free design, it avoids chemical pollution and reduces operation costs, while the built-in self-cleaning brush effectively prevents biological adhesion and extends the maintenance cycle. The sensor has the advantages of automatic turbidity interference compensation, chloride ion anti-interference, fast response (tens of seconds), low failure rate and high stability, and can provide accurate and reliable data support for various water quality monitoring scenarios.

    Product Paramenters

    Product Name

    COD Sensor

    Model

    LMS-COD100H

    LMS-COD100L

    Range

    COD:0.1~1500mg/L ; 0.1~500mg/L

    TOC:0.1~750mg/L
    BOD:0.1~900mg/L
    Turbidity: 0.1 ~ 4000 NTU
    Temperature range: 0 to 50℃

    COD: 0.1~500mgL

    TOC: 0.1~200mg/

    BOD: 0.1~300mgL

    Turbidity: 0.1 ~ 1000 NTU

    Temperature range: 0 to 50C

    Measurement Method

    Ultraviolet orption method

    Accuracy

    <5% equiv.KHP
    temperature:±0.5℃

    Power

    9-24VDC(Recommend12 VDC)

    Material

    316L Stainless Steel

    Size

    32mm * 200mm

    IP Protection

    IP68

    Output

    RS-485, MODBUS Protocol

    Certificate

    CE, ISO9001

    Product Features

    1.Dual-Model Multi-Parameter Detection
    Equipped with LMS-COD100H and LMS-COD100L two models to meet different range monitoring needs, a single sensor can simultaneously measure COD, TOC, BOD, turbidity and temperature, reducing the number of equipment deployment and the complexity of the monitoring system.
    2.Reagent-Free & Environmentally Friendly
    The whole detection process does not need to add any chemical reagents, which not only eliminates the risk of secondary pollution to the water body, but also saves the long-term reagent purchase cost, and is more in line with the environmental protection requirements of ecological monitoring.

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    3.Intelligent Anti-Interference & High Precision
    It has automatic turbidity interference compensation function, which can eliminate the measurement error caused by suspended particles in water; at the same time, it is not affected by chloride ions, ensuring that the detection data is accurate and stable, with the accuracy of COD and other parameters less than 5% equiv.KHP.
    4.Self-Cleaning & Low Maintenance
    The integrated self-cleaning brush can automatically remove the biological attachments on the sensor surface, effectively extending the maintenance cycle, and the equipment has the characteristics of low failure rate, reducing the later operation and maintenance workload of users.
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    5.Fast Response & Easy Integration
    The sensor can output detection results within tens of seconds, realizing real-time monitoring of water quality; it supports RS-485 digital output and Modbus protocol, which can be quickly connected to various industrial control systems and IoT platforms, with simple operation and strong compatibility.
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    Application

    1.Municipal & Industrial Wastewater Treatment
    For municipal sewage treatment plants and industrial wastewater discharge points, the dual-model sensor can be selected according to the pollution degree of water body. It can monitor COD, BOD and other key indicators in real time to ensure that the effluent meets the discharge standards, and the turbidity and temperature data can also assist in optimizing the treatment process and reducing energy consumption.
    2.Ecological Water Body Monitoring
    In rivers, lakes and reservoirs, the reagent-free design of the sensor avoids damaging the ecological environment of the water body, and the multi-parameter detection can comprehensively reflect the organic pollution and turbidity changes of the water body, providing a basis for water ecological restoration and protection.
    3.Aquaculture Water Quality Management
    In fish and shrimp breeding ponds, the sensor can monitor the content of organic matter (COD/BOD) and turbidity of the water body in real time. When the index exceeds the standard, it can give an early warning in time, helping farmers adjust the water quality in time and maintain the healthy growth environment of aquatic products.
    4.Process Water Monitoring in Food & Pharmaceutical Industry
    In food processing, pharmaceutical production and other fields, the sensor can monitor the quality of process water to prevent organic pollution from affecting product quality, and its high stability and anti-interference performance can adapt to the complex water quality environment in the production workshop.
    application

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    Digital RS485 Water Quality Sensors Technical Data
    No. Picture Product Name Model Range Accuracy Resolution
    1 Digital RS4851 DO sensor LMS-DO10B 0-20mg/L, 0-60℃ ±0.1-0.3mg/L 0.01mg/L
    2 Digital RS4852 DO sensor LMS-DO10C 0-20mg/L, 0-60℃ ±0.3mg/L 0.01mg/l
    3 Digital RS4853 Trace DO sensor LMS-TDO100 0-2000ppb, 0-50℃ ±1ppb 1ppb
    4 Digital RS4854 PH sensor LMS-PH100 0-14pH ±0.02pH 0.01pH
    5 Digital RS4854 ORP sensor LMS-ORP100 ±1000.0 mV ±0.2 mV 0.1mV
    6 Digital RS4856 EC/TDS sensor LMS-TDS102 CT: 0-9999uS/cm; 0-100mS/cm; TDS: 0-10000ppm ±2.5%FS 1uS/cm,0.01mS/cm 1ppm
    7 Digital RS4857 Salinity/EC/TDS sensor LMS-SAL104 Conductivity: 0.1-500 mS/cm TDS:0-60000ppm Salinity: 0-500.00ppt ±1.5%FS 1uS/cm,0.01mS/cm 1ppm 0.01ppt
    8 Digital RS4858 COD sensor LMS-COD100 COD:0.1-1500mg/L TOC:0.1-750mg/L BOD:0.1-900mg/L Turbidity: 0.1-4000NTU Temperature range: 0-50 ℃ ±5% equiv.KHP Temperature: ± 0.5 ℃ 0.01mg/L equiv.KHP
    9 Digital RS4859 TSS sensor LMS-TSS100 0-50000mg/L/ 0-120000mg/L ±10%FS or 10 mg/L 0.1mg/L or 1mg/L
    10 Digital RS48510 Turbidity sensor LMS-TUR10L 0-100NTU ±10%FS or 0.3 NTU 0.01NTU
    11 Digital RS48510 Turbidity sensor LMS-TUR10H 0-3000NTU ±10%FS or 0.3 NTU 0.01NTU
    12 Digital RS48512 CO2 sensor LMS-CO2100 2000PPM/10000PPM/50000PPM ±5%FS 1ppm
    13 Digital RS48513 Ammonia Nitrogen sensor LMS-NH4100 0-1000 mg/L ±5%FS
    14 Digital RS48513 Ion Selective sensor LMS-ION100 0-1000 mg/L ±5%FS
    15 Digital RS48510 Oil in Water sensor LMS-OIL100 0-50 mg/L ; 0-5 mg/L ±3%FS 0.01ppm
    16 Digital RS48510 Chlorophyll sensor LMS-CHL100 0-500ug/L ±3%FS 0.1ug/L
    17 Digital RS48510 Blue-Green Algae sensor LMS-BGA100 0-2000,000 cells/ml ±3%FS
    18 Digital RS48518 Residual Chlorine sensor LMS-HCLO100 0 - 20.00 ppm ±5%FS 0.001 / 0.01ppm
    19 Digital RS48519 Marine Current sensor LMS-Current100 Temperature:-3℃ - 45℃ Velocity of flow:0-500 cm/s Flow direction:0-359.9° ±0.05℃ ±1 cm/s or ±2% ±2° Temperature: 0.001℃ Velocity of flow:0.1 cm/s Flow direction:0.1°
    Water Quality Analyzer Equipment
    No. Picture Product Name Model Size Power Display Output
    20 Digital RS48520 Protable DO Analyzer LMS-PA100 100mm*204mm < 0.5 W Power supply 7.5V, 5 batteries LCD display screen
    21 Digital RS48521 Multi-parameter Protable Water Analyzer LMS-PA100P 220mm*120mm*100mm Rechargeable lithium battery with 220v to dc charging adapter LCD display screen
    22 Digital RS48522 Multi-parameter Touch-screen Online Analyzer LMS-OA200T 180mmx230mmx100mm AC power supply: 220 VAC 7-inch touch screen

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