- 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 Fluorescence DO Probe Meter - Trace Dissolved Oxygen Sensor from Leading Suppliers and Factory
Product Parameters
| Product Name | Trace Dissolved Oxygen Sensor |
| Measurement Method | Fluorescent |
| Range | 0 – 2000 ppb | Temperature: 0 – 50℃ |
| Accuracy | ±1 ppb or 3% reading, whichever is greater |
| Voltage | 9 – 24 VDC (Recommend 12 VDC) |
| Material | Polymer Plastics |
| Size | 32 mm × 180 mm |
| Output | RS485, MODBUS Protocol |
| IP Grade | IP68 |
| Application | Boiler Water / Deaerated Water / Steam Condensate Water / Ultrapure Water |
Product Features
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①Fluorescence Lifetime Technology Utilizes advanced oxygen-sensitive fluorescent materials for non-consumptive measurement, ensuring no electrolyte replacement or membrane maintenance.
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②High Precision & Stability Achieves trace-level detection accuracy (±1 ppb) with minimal drift, ideal for ultra-low oxygen environments such as ultrapure water systems or pharmaceutical processes.
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③Rapid Response Delivers real-time data with a response time under 60 seconds, enabling dynamic monitoring of dissolved oxygen fluctuations.
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④Robust Construction IP68-rated polymer plastic housing resists corrosion, biofouling, and physical damage, suitable for harsh industrial or aquatic environments.
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⑤Flexible Integration Compatible with portable analyzers for field use or online systems for continuous monitoring, supported by RS-485 and MODBUS protocol for seamless connectivity.
Application
- 1. Industrial Process Control Ideal for monitoring trace dissolved oxygen in high-purity water systems used in semiconductor fabrication, pharmaceutical production, and power generation. Ensures strict quality control by detecting even minor DO fluctuations that could impact product integrity or equipment performance.
- 2. Environmental & Ecological Research Facilitates precise measurement of trace DO in delicate aquatic ecosystems, such as wetlands, groundwater, or oligotrophic lakes. Helps researchers assess oxygen dynamics in low-DO environments critical to microbial activity and nutrient cycling.
- 3. Biotechnology & Microbiology Supports bioreactor monitoring in cell culture, fermentation, and enzyme production processes, where trace DO levels directly affect microbial growth and metabolic efficiency. Enables real-time adjustments to maintain optimal conditions for bioprocess yields.
- 4. Water Quality Monitoring Crucial for detecting trace DO in drinking water sources, especially in regions with strict regulatory standards. Also applicable to ultrapure water systems in laboratories or medical facilities, ensuring compliance with hygiene and safety requirements.
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 measurement technology does the Trace Dissolved Oxygen Sensor use, and what are its advantages?
The sensor uses fluorescence lifetime technology, which relies on oxygen-sensitive fluorescent materials. Unlike traditional electrochemical methods, it requires no electrolyte replacement or membrane maintenance, offers minimal drift, and delivers highly stable, non-consumptive measurements even at trace ppb levels.
Q What is the detection range and accuracy of the LMS-TDO100 Trace DO Sensor?
The LMS-TDO100 measures dissolved oxygen in the range of 0–2000 ppb, with a temperature range of 0–50℃. Its accuracy is ±1 ppb or 3% of the reading, whichever is greater, making it suitable for ultra-low oxygen monitoring applications.
Q What communication protocol does the sensor support, and how can it be integrated into existing systems?
The sensor supports RS485 output with MODBUS protocol, enabling seamless integration into SCADA systems, PLCs, data loggers, and online monitoring platforms. It is also compatible with portable analyzers for field measurements.
Q Is the Trace Dissolved Oxygen Sensor suitable for harsh or submerged environments?
Yes. The sensor is rated IP68, meaning it is fully protected against dust and continuous water immersion. Its polymer plastic housing offers strong resistance to corrosion and biofouling, making it reliable for industrial, aquatic, and outdoor deployment.
Q What industries and applications are best suited for this trace DO sensor?
This sensor is ideal for semiconductor manufacturing, pharmaceutical production, power plant boiler water monitoring, environmental research in aquatic ecosystems, biotechnology bioreactors, and ultrapure or drinking water quality monitoring where trace-level oxygen detection is critical.
Q Does the sensor require frequent calibration or maintenance?
Thanks to fluorescence lifetime technology, the sensor exhibits very low drift and does not consume reagents or require membrane replacement. Calibration intervals are significantly longer compared to electrochemical sensors, reducing overall maintenance costs and downtime in continuous monitoring applications.