Dissolved Oxygen Sensor
The Dissolved Oxygen Sensor (Model: SensorMass-LD764) is an advanced optical monitoring solution engineered for restaurant temporary rearing sensor solution and Aquatic transportation application case requirements, utilizing fluorescence quenching technology to provide stable, real-time measurements of oxygen levels in both fresh and seawater environments without the need for constant maintenance or electrolyte replacement.
Product Features
Dissolved Oxygen Sensor Core Features
No Flow Dependency & Static Water Measurement
Unlike traditional electrochemical sensors, this fluorescence-based sensor does not consume oxygen during measurement. This allows for high-precision data even in static water or low-flow conditions, making it the optimal choice for monitoring dissolved oxygen in transport bins and temporary holding tanks.
High Stability Green Light Technology
The sensor utilizes modulated green light excitation to slow the decay of fluorescent substances, extending the lifespan of the sensor cap to 18 months and the body to 5 years. This provides a stable, reliable measurement method that is unaffected by water quality and typically requires no calibration.
Integrated Digital & Analog Communication
Equipped with full digital processing and a shielded stainless steel casing, the sensor directly outputs RS485 (Modbus-RTU) and 4-20mA signals. This ensures strong anti-interference and easy integration into hotel temporary rearing sensor solutions and SCADA systems.
Technical Specifications
Dissolved Oxygen Sensor Technical Parameters
| Parameter | Details |
|---|---|
| Measuring Range | 0-20 mg/L (0-200% Saturation) |
| Communication | RS485 Modbus-RTU / 4-20mA Output |
| Temperature Compensation | Automatic via Internal PT1000 ($\pm 0.5$°C) |
| Power Requirements | DC 12-30V, Low Consumption (<0.2W) |
| Construction | IP68 Rated 316L SS or POM Housing |
Applications
Application Scenarios of Dissolved Oxygen Sensors
Luxury Hotel Live Seafood Rearing
Prevent inventory loss in restaurant display tanks with our hotel temporary rearing sensor solution. Real-time alerts ensure that oxygen levels for sensitive species like lobster and abalone stay above critical saturation thresholds, preserving product texture and flavor. [3, 14]
International Live Aquatic Logistics
In every Aquatic DO sensor transportation application case, accuracy is paramount. Our sensors provide the stability needed for long-haul transit, ensuring that even at varying altitudes and temperatures, the oxygen supply remains optimal to minimize mortality. [4, 7]
High-Density Intensive Aquaculture
From hatcheries to grow-out ponds, our Dissolved Oxygen Sensors support intensive stocking densities by automating aeration control, reducing energy costs while maintaining health. [15, 2]
FAQ
FAQs About Dissolved Oxygen Sensors
How do I choose between an optical and an electrochemical sensor for my transport tanks?
For aquatic transportation, optical sensors are superior. Electrochemical sensors require a minimum water flow to work accurately and need frequent electrolyte replacement. Optical sensors are flow-independent, consume no oxygen, and require significantly less maintenance.
Does salinity affect the dissolved oxygen reading?
Yes, oxygen solubility is inversely related to salinity. Seawater holds less oxygen than freshwater at the same temperature. Our sensors include automatic temperature compensation and manual pressure compensation to ensure accurate mg/L readings across varying conditions.
How often does the sensor need to be calibrated to maintain accuracy?
According to the manual, calibration is typically unnecessary under normal circumstances. For high-precision requirements, we recommend a Dissolved oxygen sensor calibration service check every 3 months, or according to the maintenance schedule required by your local authority.
What is the best way to clean the sensor if it gets covered in garbage or sludge?
Simply remove the garbage and clean the sensitive front end with water. It is strictly prohibited to use alcohol or other organic solvents, or to touch the sensitive part with sharp hard objects, as these will damage the sensor.
What are the output options for this sensor?
The SensorMass Dissolved Oxygen Sensor is a digital sensor that directly outputs both RS485 (Modbus-RTU) and 4-20mA signals, making it highly compatible with existing SCADA, PLC, or data logging systems without additional transmitters.
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