Y504-A Online Optical Dissolved Oxygen Sensor

Product Description

Yosomitech Y504-A Optical Dissolved Oxygen Sensor is an online device for measuring dissolved oxygen in water. Our Optical Dissolved Oxygen Probe adopts oxygen dynamic luminescence quenching technique; when blue light excites sensor film it emits red light which can then be measured to calculate DO concentration. When blue excitation meets red emission the phase difference between them can be calculated and then used to calculate DO concentration.

Y504-A Optical Do Probe doesn't consume oxygen, has no flow rate limit, doesn't require electrolyte, is free of frequent maintenance and calibration, isn't affected by hydrogen sulfide, and has excellent accuracy and stability. 

It's widely used in Municipal wastewater treatment, Industrial process control, Environmental monitoring, Aquaculture systems, Surface water quality assessment, Research laboratories, Brewing and fermentation.

Product Features

Digital Sensor, RS-485 Output, MODBUS Protocol;

Fluorescence Measurement Method, No Calibration Required, No Membranes to Replace, Reducing Maintenance;

No Oxygen Consumption, Strong Anti-interference;

Low drift, Fast Response, More Accurate, Online Real-time Measuring;

Built-in Temperature Sensor, Automatic Temperature Compensation.

Widely Used in Environmental, Groundwater Monitoring, Aquaculture, Marine Research, Wastewater Treatment and etc..

Product Size

Product Technical Parameters

FAQs

1. What is Dissolved Oxygen (DO)?

Dissolved Oxygen (DO) refers to the amount of oxygen present in water, which is crucial for the survival of aquatic life and the overall health of water ecosystems. It is an essential parameter in water quality monitoring, as it influences various biological and chemical processes.

2. How to Select a Dissolved Oxygen Sensor?

When selecting a dissolved oxygen sensor, consider the following factors:

- **Application Environment**: Determine whether the sensor will be used in freshwater, seawater, or wastewater.

- **Measurement Range**: Ensure the sensor can measure the expected range of dissolved oxygen levels.

- **Accuracy and Precision**: Choose a sensor that provides reliable and consistent readings.

- **Maintenance Requirements**: Consider the frequency of maintenance and calibration needed.

- **Durability**: Select a sensor that can withstand the specific environmental conditions of your application.

3. Differences Between Optical and Polarographic Dissolved Oxygen Measurement

Measurement Principles

- **Polarographic Sensors**: These sensors operate based on electrochemical reactions. They use an oxygen-permeable membrane and an electrolyte solution to generate a current that correlates with the concentration of dissolved oxygen. However, they generally require a warm-up period before achieving accurate readings.

- **Optical Sensors**: These sensors rely on luminescence quenching. A light source excites a dye, and the presence of oxygen affects the duration and intensity of the emitted light. Optical sensors typically offer precision without the need for regular maintenance like membrane or electrolyte replacement.

Maintenance and Calibration

- **Polarographic Sensors**: These sensors can require frequent maintenance, such as changing membranes and electrolytes, and often need regular calibration to ensure accuracy.

- **Optical Sensors**: Typically demand less frequent maintenance and only periodic recalibration, resulting in reduced downtime and lower operational costs.

Response Time and Accuracy

- **Polarographic Sensors**: Response time can vary, often affected by temperature fluctuations and the condition of the membrane.

- **Optical Sensors**: Generally, optical sensors provide faster response times and are less influenced by changes in environmental conditions, offering consistent accuracy.

Durability and Lifecycle

- **Polarographic Sensors**: Over time, the components might degrade, affecting longevity and response quality.

- **Optical Sensors**: These sensors are known for their robustness and can usually sustain harsh environments longer, making them a suitable choice for continuous and demanding applications.

By understanding these differences, you can make an informed decision on which type of dissolved oxygen sensor best suits your specific needs.

4. Why Choose Yosemitech?

**Accurate and Reliable**: Utilizing advanced fluorescence technology, our measurement results ensure precision and dependability.

**Sturdy and Durable**: Featuring an IP68 waterproof rating, our sensor is built to withstand a variety of working environments.

**Comprehensive After-Sales Support**: We provide extensive after-sales service and technical support to ensure your satisfaction.