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CO2 Probe Dissolved Carbon Dioxide Sensor in Water

The CO2 Sensor is a cutting-edge NDIR infrared absorption sensor designed for precise measurement of dissolved carbon dioxide (CO2) in water and industrial environments. Featuring a patented optical cavity, dual-channel reference compensation, and multiple output modes (UART, I2C, analog voltage, PWM), this sensor ensures reliable data with ±5%FS accuracy. Its convection diffusion ventilation design accelerates gas exchange while protecting the membrane, and the detachable waterproof structure simplifies maintenance. Ideal for aquaculture, HVAC systems, agricultural storage, and air quality monitoring, this sensor supports Modbus-RTU protocol for seamless integration into automation systems.

    Product Paramenters

    Product Name Dissolved CO2 in water
    Range 2000PPM/10000PPM/50000PPM range optional
    Accuracy ≤ ± 5% FS
    Operating Voltage DC 5V
    Material Polymer Plastic
    Working current 60mA
    Output signal UART/analog voltage/RS485
    Cable length 5m, can be extended according to user need
    Application Tap water treatment, swimming pool water quality monitoring, and industrial wastewater treatment.

    Product Features

    1. Advanced Detection Technology
    NDIR Infrared Absorption Principle: Ensures high accuracy and strong anti-interference capability for dissolved CO₂ measurement.
    Dual-Path Reference Compensation: Patented optical cavity and imported light source enhance stability and lifespan.
    2. Flexible Output & Calibration
    Multiple Output Modes: UART, IIC, analog voltage, and PWM frequency outputs for versatile integration.
    Smart Calibration: Zero, sensitivity, and clean air calibration commands, plus a manual MCDL pin for field adjustments.
    3. Durable & User-Friendly Design
    Convection Diffusion & Protective Cover: Enhances gas diffusion speed and protects the permeable membrane.
    Removable Waterproof Structure: Easy to clean and maintain, ideal for harsh or humid environments.
    4. Broad Application Scenarios
    Water Quality Monitoring: Ideal for aquaculture and environmental protection.
    Smart Device Integration: Compatible with HVAC, robots, vehicles, and smart homes for air quality management.
    5. Outstanding Technical Specifications
    High Accuracy: Detection error ≤±5% FS, repeatability error ≤±5%.
    Fast Response: T90 response time of 20s, preheating time of 120s.
    Long Lifespan: Over 5 years with wide temperature tolerance (-20~80°C storage, 1~50°C operation).
    6. Validated Performance
    Beverage CO₂ Testing: Dynamic CO₂ concentration data in beverages (e.g., beer, coke, Sprite) demonstrates reliability.

    Application

    Water Treatment Plants: Monitor CO₂ levels to optimize chemical dosing and prevent corrosion in pipelines.
    Agriculture & Aquaculture: Ensure optimal CO₂ levels for plant growth in hydroponics or fish respiration in recirculating systems.
    Environmental Monitoring: Deploy in rivers, lakes, or wastewater treatment plants to track CO2 emissions and ensure regulatory compliance.
    Beverage Industry: Validate carbonation levels in beers, sodas, and sparkling waters during production and packaging.
    application

    Digital RS485 water quality sensors technical data

    Parameter Model Range Accuracy
    DO sensor LMS-DO10B 0-20mg/L, 0-60℃ ±0.1-0.3mg/L
    DO sensor LMS-DO10C 0-20mg/L, 0-60℃ ±0.3mg/L
    Trace DO sensor LMS-TDO100 0-2000ppb, 0-50℃ ±1ppb
    PH sensor LMS-PH100 0-14pH ±0.02pH
    ORP sensor LMS-ORP100 ±1000.0 mV ±0.2 mV
    EC/TDS sensor LMS-TDS102 CT: 0-9999uS/cm; 0-100mS/cm;
    TDS: 0-10000ppm
    ±2.5%FS
    Salinity/EC/TDS sensor LMS-SAL104 Conductivity: 0.1-500 mS/cm
    TDS:0-60000ppm
    Salinity: 0-500.00ppt
    ±1.5%FS
    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 ℃
    TSS sensor LMS-TSS100 0-50000mg/L/ 0-120000mg/L ±10%FS or 10 mg/L
    Turbidity sensor LMS-TUR10L 0-100NTU ±10%FS or 0.3 NTU
    Turbidity sensor LMS-TUR10H 0-3000NTU ±10%FS or 0.3 NTU
    CO2 sensor LMS-CO2100 2000PPM/10000PPM/50000PPM ±5%FS
    Ammonia Nitrogen sensor LMS-NH4100 0-1000 mg/L ±5%FS
    Ion Selective sensor LMS-ION100 0-1000 mg/L ±5%FS
    Oil in Water sensor LMS-OIL100 0-50 mg/L ; 0-5 mg/L ±3%FS
    Chlorophyll sensor LMS-CHL100 0-500ug/L ±3%FS
    Blue-Green Algae sensor LMS-BGA100 0-2000,000 cells/ml ±3%FS
    Residual Chlorine sensor LMS-HCLO100 0 - 20.00 ppm ±5%FS
    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°
    Digital-RS485-water-quality-sensors-technical-datamore products
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