- 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 Suppliers Factory Fluorescence DO Probe Meter for Accurate Trace Dissolved Oxygen Measurement
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 | 32mm × 180mm |
| Output | RS485, MODBUS Protocol |
| IP Grade | IP68 |
| Application | Boiler Water / Deaerated Water / Steam Condensate Water / Ultrapure Water |
Product Features
-
🔬① Fluorescence Lifetime Technology Utilizes advanced oxygen-sensitive fluorescent materials for non-consumptive measurement, ensuring no electrolyte replacement or membrane maintenance.
-
🎯② High 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.
-
⚡③ Rapid Response Delivers real-time data with a response time under 60 seconds, enabling dynamic monitoring of dissolved oxygen fluctuations.
-
🛡️④ Robust Construction IP68-rated polymer plastic housing resists corrosion, biofouling, and physical damage, suitable for harsh industrial or aquatic environments.
-
🔗⑤ Flexible 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?
The sensor uses fluorescence lifetime technology based on oxygen-sensitive fluorescent materials. This non-consumptive method requires no electrolyte replacement or membrane maintenance, offering long-term stability and minimal drift.
Q What is the measurement range and accuracy of the LMS-TDO100?
The LMS-TDO100 Trace DO Sensor 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 detection applications.
Q Is the sensor suitable for outdoor or harsh industrial environments?
Yes. The sensor features an IP68-rated polymer plastic housing that provides strong resistance against corrosion, biofouling, and physical damage. It is well-suited for harsh industrial environments, continuous immersion, and demanding aquatic applications.
Q What communication protocol does the sensor support?
The Trace DO Sensor outputs data via RS485 using the MODBUS protocol. This enables seamless integration with portable analyzers, online monitoring systems, PLCs, and SCADA platforms for both field use and continuous industrial monitoring.
Q What are the typical applications for this trace dissolved oxygen sensor?
The sensor is widely used in boiler water monitoring, deaerated water systems, steam condensate water testing, and ultrapure water quality control. It is also applicable in pharmaceutical production, semiconductor fabrication, biotechnology, and environmental research where trace-level DO detection is critical.
Q Does the sensor require regular calibration or maintenance?
Thanks to the fluorescence lifetime measurement principle, the sensor requires minimal maintenance — no electrolyte refilling or membrane replacement is needed. Periodic calibration is recommended to maintain optimal accuracy, especially in long-term continuous monitoring deployments.