Y505-A Online Optical Dissolved Oxygen Sensor for Aquaculture
Y505-A Online Optical Dissolved Oxygen Sensor
Dissolved oxygen in water refers to the molecular oxygen that is present in the liquid phase. It is essential for the survival of aquatic organisms and plants. Dissolved oxygen in water provides the oxygen necessary for the life activities of aquatic organisms. So, monitoring the concentration of dissolved oxygen in water is crucial for aquaculture.
Yosemitech Y505-A Online Optical Dissolved Oxygen Sensor and Probe is designed specifically for aquaculture, adopting our self-developed fluorescent materials. No need for oxygen consumption, flow rate restrictions, electrolytes, maintenance, or calibration. This dissolved oxygen meter demonstrates outstanding resistance to interference and stability. It has a built-in temperature sensor, automatic temperature compensation.
Features of Y505-A Optical Dissolved Oxygen Sensor
Fast and precise Optical DO Sensor - Customized for the aquaculture industry
Digital sensor, RS485 output, MODBUS protocol
No electrolyte required, strong anti-interference, no need for frequent calibration
No oxygen consumption, no flow rate limitation
Simple to integrate and operate
Built-in temperature sensor, automatic temperature compensation
Built-in calibration parameters, accurately calibrated before delivery, ready for direct installation and use
Specifications
Name | Optical Dissolved Oxygen Sensor |
Model | Y505-A |
Measurement principle | Fluorescence method |
Range | 0-20mg/L or 0-200% saturation |
Accuracy | ±3% |
Temperature range | 0-50℃ |
Max water depth | 30m |
Housing IP rating | IP68 |
Sensor interface | Supports RS-485, MODBUS protocol |
Power requirements | 0.1W（suggested power supply：DC 9-24V, current>50mA） |
Installation | M22*1.5(optional accessories can be converted to NPT3/4 thread), immersive installation |
Sensor size | Φ22mm*152.7mm |
Cable length | 10m（default), customizable |
Calibration | One point or two points calibration |
Sensor housing material | 316L/Titanium alloy |
Benefits of Using an Optical Dissolved Oxygen Sensor
1. Improving Accuracy and Stability: unlike conventional galvanic and polargraphic dissolved oxygen sensors, Optical DO Sensors provide highly accurate and stable measurements. They are less affected by environmental interferences and don't require frequent recalibration.
2. Low Maintenance: Unlike electrochemical sensors, optical DO sensors don't consume oxygen. This reduces maintenance needs such as replacing membranes or electrolytes.
3. Resistant to Interference: Optical DO Sensors are less prone to interference from other gases or chemicals present in the measurement environment, making them more reliable in complex matrices
FAQs
1. What Role Does Dissolved Oxygen Play in Aquaculture?
1. Providing necessary oxygen for the life activities of farmed aquatic organisms.
2. Promoting the growth and reproduction of aerobic microorganisms to facilitate the decomposition of organic matter and eliminate organic pollution in water bodies.
3. Directly oxidizing the more toxic H2S and NO2- in water into sulfates and nitrates, thereby reducing the toxicity of such substances.
4. Inhibiting the fermentation behavior of anaerobic microorganisms, creating a suitable breeding environment.
5. Enhancing the immunity of farmed aquatic organisms.
2. Why We Need to Measure Dissolved Oxygen for Aquaculture?
3. Optical Dissolved Oxygen Sensor Principle of Operation
The working principle of the fluorescence dissolved oxygen sensor is mainly based on the fluorescence quenching effect. The sensor emits blue light through a light-emitting diode (LED), which shines on the fluorescent material inside the sensor. When the fluorescent material is excited, it emits a red light. However, when oxygen molecules are present, they take away the energy, resulting in a quenching of the fluorescence, that is, the intensity and duration of the fluorescence is reduced. This phenomenon is called fluorescence quenching effect.
By measuring the phase difference between the excited light and the emitted light, the sensor can calculate the concentration of oxygen. The higher the concentration of oxygen molecules, the more obvious the quenching effect, so that the dissolved oxygen concentration in water can be accurately detected by this measurement method. The fluorescence sensor does not consume oxygen, so it avoids the measurement errors that can occur in traditional methods.
4. How to Calibrate the Dissolved Oxygen Sensor?
