Understanding Dissolved Oxygen Level Sensors for Arduino
Dissolved oxygen level sensors are essential tools for monitoring the amount of oxygen present in water. These sensors are commonly used in aquaculture, environmental monitoring, and water treatment applications to ensure that aquatic organisms have enough oxygen to survive. In recent years, there has been a growing interest in using dissolved oxygen level sensors with Arduino microcontrollers due to their affordability and ease of use.
Arduino is an open-source electronics platform that allows users to create interactive projects by combining hardware and software. By connecting a dissolved oxygen level sensor to an Arduino board, users can easily measure and monitor the oxygen levels in water in real-time. This can be particularly useful for aquarists, researchers, and hobbyists who want to ensure the health and well-being of aquatic organisms in their care.
| model | pH/ORP-5500 series pH/ORP online transmitting controller | |
| Measurement range | pH | 0.00~14.00 |
| ORP | -2000mV~2000mV | |
| Temp. | ( 0.0~50.0)℃ (temperature compensation component:NTC10K) | |
| Resolution | pH | 0.01 |
| ORP | 1mV | |
| Temp. | 0.1℃ | |
| accuracy | pH | 0.1 |
| ORP | ±5mV（electronic unit） | |
| Temp. | ±0.5℃ | |
| Approximate input impedance | 3×1011Ω | |
| Buffer solution | pH value: 10.00；9.18；7.00；6.86；4.01；4.00 | |
| Temp. compensation range | (0~50)℃（with 25℃ as standard）Manual and automatic temperature compensation | |
| (4~20)mA | characteristics | Isolated,fully adjustable,reverible,instrument/transmitter for selection |
| Loop resistance | 500Ω（Max），DC 24V | |
| accuracy | ±0.1mA | |
| Control contact | Electrical contacts | Double relay SPST-NO,return model |
| Loop capacity | AC 220V/AC 110V 2A(Max)；DC 24V 2A(Max) | |
| Power consumption | ＜3W | |
| Working environment | temperature | (0~50)℃ |
| humidity | ≤85％RH(none condensation) | |
| Storage environment | Temp.(-20-60) ℃;relative humidity:≤85%RH(none condensation | |
| Outline dimension | 96mm×96mm×105mm（H×W×D） | |
| Hole dimension | 91mm×91mm(H×W) | |
| installation | Panel mounted,fast installation | |
There are several types of dissolved oxygen level sensors available for use with Arduino, including optical, electrochemical, and galvanic sensors. Optical sensors use light to measure the oxygen concentration in water, while electrochemical sensors rely on chemical reactions to detect oxygen levels. Galvanic sensors, on the other hand, generate an electrical current that is proportional to the amount of oxygen present in the water.
When choosing a dissolved oxygen level sensor for Arduino, it is important to consider factors such as accuracy, response time, and calibration requirements. Optical sensors are known for their high accuracy and fast response times, making them ideal for applications where precise measurements are required. Electrochemical sensors are also popular due to their low cost and ease of use, but they may require more frequent calibration to maintain accuracy.
To connect a dissolved oxygen level sensor to an Arduino board, users will need to follow the manufacturer’s instructions for wiring and programming. Most sensors come with a data sheet that provides information on how to interface with the sensor and read the oxygen concentration values. By using the Arduino IDE (Integrated Development Environment) and writing a simple code snippet, users can easily read the sensor data and display it on a computer or mobile device.
| Model | DO-810/1800 dissolved oxygen meter |
| Range | 0-20.00 mg/L |
| Accuracy | ±0.5% FS |
| Temp. Comp. | 0-60℃ |
| Oper. Temp. | 0～60℃ |
| Sensor | dissolved oxygen sensor |
| Display | Segment code operation/128*64 LCD Screen(DO-1800) |
| Communication | Optional RS485 |
| Output | 4-20mA output High/Low limit double relay control |
| Power | AC 220V±10% 50/60Hz or AC 110V±10% 50/60Hz or DC24V/0.5A |
| Working Environment | Ambient temperature:0～50℃ |
| Relative humidity≤85% | |
| Dimensions | 96×96×100mm(H×W×L) |
| Hole Size | 92×92mm(H×W) |
| Installation Mode | Embedded |
One of the key advantages of using a dissolved oxygen level sensor with Arduino is the ability to create custom monitoring systems that meet specific requirements. For example, users can set up alerts to notify them when oxygen levels drop below a certain threshold, or log data over time to track changes in water quality. By combining the sensor data with other environmental parameters, such as temperature and pH, users can gain a more comprehensive understanding of the aquatic ecosystem they are monitoring.
In conclusion, dissolved oxygen level sensors for Arduino offer a cost-effective and versatile solution for monitoring oxygen levels in water. By choosing the right sensor for their application and following the manufacturer’s instructions for setup and calibration, users can easily integrate these sensors into their projects and gain valuable insights into the health of aquatic environments. Whether you are a hobbyist, researcher, or aquarist, using a dissolved oxygen level sensor with Arduino can help you ensure the well-being of aquatic organisms and maintain water quality.
