- 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-Precision Fluorescent DO Sensor 50mg/L 316L DO Meter - China Suppliers & Factory for Aquaculture and Water Treatment
Product Parameters
| Product Name | Dissolved Oxygen Sensors |
| Model | LMS-DO200-P |
| Measurement Method | Fluorescent Method |
| Respond Time | T90<60s |
| Range | 0～60℃、0～50mg⁄L |
| Accuracy | ±0.15~0.3mg/L |
| Temperature Accuracy | <0.2℃ |
| Working Temperature | 0～50℃ |
| Storage Temperature | -5～70℃ |
| Power | 9-24VDC（Recommend 12 VDC） |
| Material | 316L Stainless Steel |
| Size | φ36mm*200mm |
| Sensor Interface Supports | RS-485, MODBUS protocol |
| Applications | Special for high-end intensive aquaculture, industrial water treatment, municipal sewage monitoring; Equipped with imported optical components and ultra-sensitive photodetector, featuring ultra-fast response, ultra-high precision and ultra-wide range, free of daily maintenance with excellent corrosion and fouling resistance. |
Product Features
1 Imported Optical Core Components
Adopts top-grade imported optical elements and ultra-sensitive photoelectric detectors, with ultra-high sensitivity to capture the slightest changes in dissolved oxygen concentration, ensuring the authenticity and reliability of monitoring data in ultra-low and ultra-high DO concentration environments.
2 Ultra-fast Response & Super High Precision
T90 response time is less than 60s, far exceeding the industry average, and the dissolved oxygen measurement accuracy reaches ±0.15~0.3mg/L with temperature accuracy <0.2℃, realizing real-time and high-precision DO monitoring for dynamic water bodies.
3 Ultra-wide Range for Diversified Scenarios
Breaks the traditional DO measurement limit, supporting an ultra-wide range of 0~50mg/L, suitable for both low-oxygen sewage treatment and high-oxygen aquaculture aeration systems, meeting the diverse monitoring needs of different industries.
4 316L Stainless Steel Corrosion-resistant Structure
The whole body is made of high-purity 316L stainless steel, with excellent resistance to salt corrosion, acid and alkali erosion and mechanical wear, and can be fully immersed in harsh water bodies for long-term continuous work without structural damage.
5 Maintenance-free Fluorescent Membrane Technology
The surface is coated with a high-density anti-fouling fluorescent membrane, which inhibits the attachment of microorganisms and impurities, eliminates the need for regular cleaning and membrane replacement in daily use, and truly realizes zero maintenance of the sensor.
6 Intelligent Temperature Compensation & Easy Integration
Built-in high-precision temperature sensor with intelligent real-time temperature compensation, ensuring stable and accurate measurement data under large temperature changes; supports RS-485/MODBUS standard protocol, which can be seamlessly connected to various water quality monitoring systems and realize one-click data transmission and remote control.
7 Energy-saving & Stable Power Supply
Adapts to 9-24VDC wide voltage power supply, recommended 12VDC low-voltage power supply, with low power consumption and stable operation, no power fluctuation interference, suitable for on-site outdoor monitoring with limited power supply conditions.
Application
1 High-end Intensive Aquaculture
It is the core monitoring equipment for high-end recirculating aquaculture systems (RAS), deep-sea mariculture and precious aquatic product breeding bases. The ultra-high precision and ultra-fast response can timely detect the slight changes of dissolved oxygen in the water body, avoid the hypoxia of precious aquatic products, optimize the aeration system operation, reduce energy consumption, and improve the breeding survival rate and economic benefits.
2 Industrial Water Treatment
Ideal for DO monitoring in industrial wastewater treatment, chemical plant circulating water, power plant cooling water and other industrial water bodies. The ultra-wide range can adapt to the large fluctuation of dissolved oxygen in the water body during the industrial water treatment process, and the corrosion-resistant structure can resist the erosion of various chemical substances in the industrial water, ensuring long-term stable operation and providing accurate data support for industrial water quality up to standard.
3 Municipal Sewage Monitoring
Suitable for the dissolved oxygen monitoring of municipal sewage treatment plants in the aerobic tank, anoxic tank and sedimentation tank links. The maintenance-free design saves the manual maintenance cost of the sewage plant, and the high precision can accurately reflect the treatment effect of the sewage biochemical system, helping the sewage plant to adjust the process parameters in time and improve the sewage treatment efficiency.
4 Natural Water Ecological Monitoring
It is used for the long-term monitoring of dissolved oxygen in rivers, lakes, reservoirs and other natural water bodies, as well as the ecological restoration water area. The ultra-sensitive detection performance can capture the subtle changes of water body DO caused by aquatic organisms and environmental factors, provide accurate and comprehensive data for water ecological environment evaluation and governance, and assist the construction of water ecological civilization.
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 | 0-14pH | ±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: 0.1-500 mS/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 10 mg/L | 0.1mg/L or 1mg/L |
| 10 |  |
Turbidity sensor | LMS-TUR10L | 0-100NTU | ±10%FS or 0.3 NTU | 0.01NTU |
| 11 | |
Turbidity sensor | LMS-TUR10H | 0-3000NTU | ±10%FS or 0.3 NTU | 0.01NTU |
| 12 |  |
CO2 sensor | LMS-CO2100 | 2000PPM / 10000PPM / 50000PPM | ±5%FS | 1ppm |
| 13 |  |
Ammonia Nitrogen sensor | LMS-NH4100 | 0-1000 mg/L | ±5%FS | — |
| 14 | |
Ion Selective sensor | LMS-ION100 | 0-1000 mg/L | ±5%FS | — |
| 15 | |
Oil in Water sensor | LMS-OIL100 | 0-50 mg/L; 0-5 mg/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 | 0-20.00 ppm | ±5%FS | 0.001 / 0.01ppm |
| 19 |  |
Marine Current sensor | LMS-Current100 | Temp: -3℃~45℃; Velocity: 0-500 cm/s; 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 220 VAC | 7-inch touch screen |
Frequently Asked Questions (FAQ)
Q What measurement method does the LMS-DO200-P dissolved oxygen sensor use, and why is it superior?
A The LMS-DO200-P uses the fluorescent method (optical fluorescence quenching) for dissolved oxygen measurement. Unlike traditional electrochemical methods, it requires no membrane replacement, consumes no oxygen during measurement, and is free from interference by hydrogen sulfide or other gases, delivering higher accuracy and a truly maintenance-free experience.
Q What is the measurement range of the LMS-DO200-P, and which industries is it suitable for?
A The sensor supports an ultra-wide range of 0~50mg/L for dissolved oxygen and 0~60℃ for temperature. This makes it suitable for high-end intensive aquaculture (RAS systems), industrial wastewater treatment, municipal sewage plants, and natural water ecological monitoring — covering both low-oxygen and high-oxygen environments.
Q Does the LMS-DO200-P require regular maintenance or membrane replacement?
A No. The sensor is coated with a high-density anti-fouling fluorescent membrane that resists microbial attachment and fouling. There is no need for regular cleaning or membrane replacement, achieving true zero-maintenance operation during normal use.
Q What communication protocol does the sensor support, and how can it be integrated into existing systems?
A The LMS-DO200-P supports RS-485 interface with MODBUS RTU protocol, which is widely compatible with PLCs, data loggers, SCADA systems, and water quality monitoring platforms. Integration is straightforward, enabling seamless data transmission and remote monitoring with minimal configuration.
Q What power supply does the LMS-DO200-P require, and is it suitable for outdoor field deployment?
A The sensor accepts a wide voltage input of 9–24VDC (12VDC recommended). Its low power consumption and stable operation make it ideal for outdoor field monitoring sites where power supply conditions may be limited, such as remote aquaculture farms or river monitoring stations.
Q Why is 316L stainless steel used as the sensor body material?
A 316L stainless steel offers superior resistance to salt corrosion, acid and alkali erosion, and mechanical wear compared to standard stainless steel. This ensures the sensor can withstand long-term full immersion in harsh water environments — including seawater, industrial effluents, and municipal sewage — without structural degradation or performance loss.