- Multi-parameter Water Analyzer
- Single-Parameter Water Aalyzer
- DO Sensor
- Trace DO Sensor
- CO₂ Sensor
- COD Sensor
- EC TDS Sensor
- Salinity EC TDS Sensor
- TSS Sensor
- Turbidity Sensor
- PH Sensor
- ORP
- Ion Selective Sensor
- Ammonia Nitrogen Sensor
- Oil in Water Sensor
- Blue-Green Algae Sensor
- Chlorophyll Sensor
- Residual Chlorine Sensor
- Marine Current Sensor
0102030405
High-Performance 5-in-1 UV Absorption COD BOD TOC Sensor for Water Quality - China Factory & Suppliers
Product Parameters
| Product Name | COD Sensor |
| Measurement Method | Ultraviolet Absorption Method |
| Range |
COD: 0.1 ~ 1500 mg/L | 0.1 ~ 500 mg/L TOC: 0.1 ~ 750 mg/L BOD: 0.1 ~ 900 mg/L Turbidity: 0.1 ~ 4000 NTU Temperature: 0 to 50 ℃ |
| Accuracy | <5% equiv. KHP Temperature: ±0.5 ℃ |
| Power | 9–24 VDC (Recommend 12 VDC) |
| Material | 316L Stainless Steel |
| Size | 32 mm × 200 mm |
| IP Protection | IP68 |
| Output | RS-485, MODBUS Protocol |
Product Features
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🔬1. Advanced Multi-Parameter DetectionSimultaneously measures COD, TOC, BOD, turbidity, and temperature with a single sensor, reducing equipment costs and complexity.
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🛡️2. Robust Anti-Interference DesignAutomatic turbidity compensation eliminates measurement errors caused by suspended particles, ensuring high accuracy even in turbid water.
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⚙️3. Maintenance-Free OperationIntegrated self-cleaning brush prevents biofouling and extends maintenance cycles to over 12 months. Reagent-free design avoids chemical pollution and reduces operational costs.
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⚡4. Rapid Response & High StabilityAchieves results within tens of seconds with ±5% accuracy. Built-in temperature compensation ensures reliability across 0–50°C environments.
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🏭5. Industrial-Grade Durability316L stainless steel housing and IP68 rating withstand corrosion, high pressure, and harsh aquatic conditions.
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🔗6. Seamless IntegrationSupports RS-485 communication and Modbus protocol for easy connection to IoT platforms.
Application
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🏗️1. Wastewater Treatment PlantsIdeal for monitoring COD and BOD levels in industrial and municipal wastewater to ensure compliance with discharge regulations. The sensor's turbidity and temperature measurements also aid in optimizing treatment processes, such as adjusting aeration or chemical dosing, to improve efficiency and reduce operational costs.
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🌿2. Environmental MonitoringUsed in rivers, lakes, and groundwater sites to track organic pollution trends. The reagent-free design makes it environmentally safe for long-term ecological studies, while multi-parameter capabilities provide a holistic view of water quality changes over time.
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🏭3. Industrial Process ControlIn manufacturing sectors like food and beverage, pharmaceuticals, and electronics, the sensor monitors process water quality in real time, preventing contamination and ensuring product consistency. Its resistance to harsh chemicals and high-temperature environments makes it a reliable choice for industrial pipelines and cooling systems.
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🐟4. Aquaculture and AgricultureHelps maintain optimal water conditions for fish farms by measuring dissolved organic matter (COD/BOD) and turbidity, which impact aquatic life health. In irrigation systems, it monitors nutrient levels and contaminants in source water, supporting sustainable agricultural practices.
Digital RS485 Water Quality Sensors Technical Data
| Parameter | Model | Range | Accuracy |
| DO Sensor | LMS-DO10B | 0–20 mg/L, 0–60 ℃ | ±0.1–0.3 mg/L |
| DO Sensor | LMS-DO10C | 0–20 mg/L, 0–60 ℃ | ±0.3 mg/L |
| Trace DO Sensor | LMS-TDO100 | 0–2000 ppb, 0–50 ℃ | ±1 ppb |
| PH Sensor | LMS-PH100 | 0–14 pH | ±0.02 pH |
| ORP Sensor | LMS-ORP100 | ±1000.0 mV | ±0.2 mV |
| EC/TDS Sensor | LMS-TDS102 | CT: 0–9999 uS/cm; 0–100 mS/cm TDS: 0–10000 ppm |
±2.5% FS |
| Salinity/EC/TDS Sensor | LMS-SAL104 | Conductivity: 0.1–500 mS/cm TDS: 0–60000 ppm Salinity: 0–500.00 ppt |
±1.5% FS |
| COD Sensor | LMS-COD100 | COD: 0.1–1500 mg/L TOC: 0.1–750 mg/L BOD: 0.1–900 mg/L Turbidity: 0.1–4000 NTU Temperature: 0–50 ℃ |
±5% equiv. KHP Temperature: ±0.5 ℃ |
| TSS Sensor | LMS-TSS100 | 0–50000 mg/L / 0–120000 mg/L | ±10% FS or 10 mg/L |
| Turbidity Sensor | LMS-TUR10L | 0–100 NTU | ±10% FS or 0.3 NTU |
| Turbidity Sensor | LMS-TUR10H | 0–3000 NTU | ±10% FS or 0.3 NTU |
| CO₂ Sensor | LMS-CO2100 | 2000 PPM / 10000 PPM / 50000 PPM | ±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 | 0–500 ug/L | ±3% FS |
| Blue-Green Algae Sensor | LMS-BGA100 | 0–2,000,000 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° |
❓ Frequently Asked Questions (FAQ)
Q What parameters can the COD sensor (LMS-COD100) measure simultaneously?
The LMS-COD100 COD sensor can simultaneously measure five parameters: COD (Chemical Oxygen Demand), TOC (Total Organic Carbon), BOD (Biochemical Oxygen Demand), turbidity, and water temperature — all with a single probe, eliminating the need for multiple instruments.
Q Does the COD sensor require chemical reagents for operation?
No. The sensor uses an ultraviolet absorption method, which is completely reagent-free. This means there is no need to handle, store, or dispose of chemicals, making it safer, more cost-effective, and environmentally friendly for continuous monitoring applications.
Q How often does the COD sensor need maintenance?
Thanks to the integrated self-cleaning brush that prevents biofouling on the optical lens, the maintenance cycle can be extended to over 12 months under normal operating conditions. This significantly reduces labor costs and downtime compared to traditional sensors.
Q Is the COD sensor suitable for harsh industrial environments?
Yes. The sensor is built with a 316L stainless steel housing and carries an IP68 waterproof rating, making it resistant to corrosion, high pressure, and prolonged submersion. It is designed to operate reliably in demanding environments such as industrial wastewater systems, chemical plants, and outdoor water bodies.
Q What communication interface does the sensor support, and can it connect to SCADA or IoT systems?
The sensor supports RS-485 communication with the Modbus RTU protocol, which is widely compatible with SCADA systems, PLCs, data loggers, and IoT platforms. This makes integration into existing monitoring infrastructure straightforward and cost-effective.
Q How does turbidity affect the COD measurement accuracy, and how is it compensated?
Suspended particles in water can scatter UV light and cause false COD readings. The LMS-COD100 features automatic turbidity compensation, which uses a dedicated measurement channel to detect turbidity levels and mathematically correct the COD reading in real time, ensuring accurate results even in highly turbid water up to 4000 NTU.