- 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
China LMS-COD100 Series Water Quality Sensor Factory - Accurate BOD, TOC, COD Detection by Reliable Suppliers
Product Parameters
| 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: 0 to 50℃ |
COD: 0.1~500mg/L TOC: 0.1~200mg/L BOD: 0.1~300mg/L Turbidity: 0.1~1000 NTU Temperature: 0 to 50℃ |
| Measurement Method | Ultraviolet absorption method | |
| Accuracy | <5% equiv.KHP Temperature: ±0.5℃ |
|
| Power | 9–24VDC (Recommend 12VDC) | |
| 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.
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.
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.
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.
More Products
| Digital RS485 Water Quality Sensors Technical Data | ||||||
| No. | Picture | Product Name | Model | Range | Accuracy | Resolution |
| 1 |  |
DO sensor | LMS-DO10B | 0–20mg/L, 0–60℃ | ±0.1–0.3mg/L | 0.01mg/L |
| 2 |  |
DO sensor | LMS-DO10C | 0–20mg/L, 0–60℃ | ±0.3mg/L | 0.01mg/L |
| 3 |  |
Trace DO sensor | LMS-TDO100 | 0–2000ppb, 0–50℃ | ±1ppb | 1ppb |
| 4 |  |
PH sensor | LMS-PH100 | 0–14 pH | ±0.02pH | 0.01pH |
| 5 | |
ORP sensor | LMS-ORP100 | ±1000.0 mV | ±0.2 mV | 0.1mV |
| 6 |  |
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 |  |
Salinity/EC/TDS sensor | LMS-SAL104 | Conductivity: 0.1–500mS/cm TDS: 0–60000ppm Salinity: 0–500.00ppt |
±1.5%FS | 1uS/cm, 0.01mS/cm, 1ppm, 0.01ppt |
| 8 |  |
COD sensor | LMS-COD100 | COD: 0.1–1500mg/L TOC: 0.1–750mg/L BOD: 0.1–900mg/L Turbidity: 0.1–4000NTU Temp: 0–50℃ |
±5% equiv.KHP Temp: ±0.5℃ |
0.01mg/L equiv.KHP |
| 9 |  |
TSS sensor | LMS-TSS100 | 0–50000mg/L / 0–120000mg/L | ±10%FS or 10mg/L | 0.1mg/L or 1mg/L |
| 10 |  |
Turbidity sensor | LMS-TUR10L | 0–100NTU | ±10%FS or 0.3NTU | 0.01NTU |
| 11 | |
Turbidity sensor | LMS-TUR10H | 0–3000NTU | ±10%FS or 0.3NTU | 0.01NTU |
| 12 |  |
CO2 sensor | LMS-CO2100 | 2000PPM / 10000PPM / 50000PPM | ±5%FS | 1ppm |
| 13 |  |
Ammonia Nitrogen sensor | LMS-NH4100 | 0–1000mg/L | ±5%FS | — |
| 14 | |
Ion Selective sensor | LMS-ION100 | 0–1000mg/L | ±5%FS | — |
| 15 | |
Oil in Water sensor | LMS-OIL100 | 0–50mg/L ; 0–5mg/L | ±3%FS | 0.01ppm |
| 16 | |
Chlorophyll sensor | LMS-CHL100 | 0–500ug/L | ±3%FS | 0.1ug/L |
| 17 | |
Blue-Green Algae sensor | LMS-BGA100 | 0–2,000,000 cells/ml | ±3%FS | — |
| 18 |  |
Residual Chlorine sensor | LMS-HCLO100 | 0–20.00ppm | ±5%FS | 0.001 / 0.01ppm |
| 19 |  |
Marine Current sensor | LMS-Current100 | Temperature: -3℃–45℃ Flow velocity: 0–500cm/s Flow direction: 0–359.9° |
±0.05℃ ±1cm/s or ±2% ±2° |
Temp: 0.001℃ Velocity: 0.1cm/s Direction: 0.1° |
| Water Quality Analyzer Equipment | ||||||
| No. | Picture | Product Name | Model | Size | Power | Display Output |
| 20 |  |
Portable DO Analyzer | LMS-PA100 | 100mm × 204mm | <0.5W; 7.5V, 5 batteries | LCD display screen |
| 21 |  |
Multi-parameter Portable Water Analyzer | LMS-PA100P | 220mm × 120mm × 100mm | Rechargeable lithium battery with 220V DC charging adapter | LCD display screen |
| 22 |  |
Multi-parameter Touch-screen Online Analyzer | LMS-OA200T | 180mm × 230mm × 100mm | AC 220VAC | 7-inch touch screen |
Frequently Asked Questions (FAQ)
Q
What parameters can the COD sensor (LMS-COD100H / LMS-COD100L) measure simultaneously?
Both models support simultaneous measurement of five parameters: COD (Chemical Oxygen Demand), TOC (Total Organic Carbon), BOD (Biochemical Oxygen Demand), Turbidity, and Water Temperature — all from a single sensor deployment.
Q
What is the difference between the LMS-COD100H and LMS-COD100L models?
The LMS-COD100H is designed for high-range monitoring with COD up to 1500mg/L and turbidity up to 4000 NTU, making it suitable for heavily polluted industrial wastewater. The LMS-COD100L covers a lower range (COD up to 500mg/L, turbidity up to 1000 NTU), ideal for cleaner water bodies such as rivers, lakes, or aquaculture environments.
Q
Does the COD sensor require chemical reagents during operation?
No. The sensor uses an ultraviolet absorption method that is completely reagent-free. This eliminates secondary chemical pollution, reduces ongoing operational costs, and makes the sensor safer and more environmentally friendly for long-term deployment.
Q
How does the sensor handle biofouling or surface contamination in the water?
The sensor is equipped with an integrated self-cleaning brush that automatically removes biological attachments and sediment from the optical sensing surface. This significantly extends the maintenance interval and reduces the frequency of manual cleaning required by operators.
Q
What communication protocol does the COD sensor support, and how can it be integrated into existing systems?
The sensor supports RS-485 digital output with Modbus RTU protocol, which is widely compatible with industrial PLCs, SCADA systems, data loggers, and IoT platforms. Integration is straightforward and requires minimal configuration, enabling fast deployment into existing water quality monitoring networks.
Q
Is the COD sensor suitable for outdoor or submerged long-term deployment?
Yes. The sensor is housed in 316L stainless steel with an IP68 waterproof rating, making it fully submersible and resistant to corrosion in harsh water environments. It operates on a 9–24VDC power supply and is built to withstand continuous outdoor deployment in rivers, wastewater plants, aquaculture ponds, and industrial facilities.