MEJ-DO7018 optical dissolved oxygen sensor is a widely used device in environmental monitoring, sewage treatment, aquaculture and other fields.
It is based on the new generation of fluorescence lifetime technology and high-performance fluorescent materials, which excite the fluorescent substance at the top of the sensor with blue light to emit red light.The sensor has a wide measurement range and a resolution of up to 0.01mg/L, which can meet the high-precision measurement requirements in various environments.
Characteristics:
Accuracy:1%
Signal interface: Modbus RS-485
No membrane and no electrolyte required
No need to consume oxygenAutomatic temperature compensation
Intro to MEJ-DO7018 Optical dissolved oxygen sensor
Mejor will elaborate on the advantages of DO7018 optical dissolved oxygen sensor in terms of measurement principles, hardware design features, data processing and transmission capabilities.
- High precision measurement:
Based on the principle of fluorescence quenching, using blue light to irradiate fluorescent substances, the inverse relationship between oxygen molecules and the excitation time and intensity of red light can accurately calculate oxygen concentration, with a measurement accuracy of up to 1%. It can sensitively capture changes in dissolved oxygen concentration in water bodies, providing reliable data support for scenarios such as water quality monitoring and aquaculture that require high accuracy of dissolved oxygen data. - Stable and reliable:
Select high-quality fluorescent film to ensure long-term stability of measurement; The membrane free and electrolyte free design avoids measurement errors and failures caused by membrane damage, electrolyte leakage, or deterioration in traditional sensors, reduces maintenance frequency, and lowers the risk of data loss due to equipment failure. It is suitable for long-term online monitoring tasks. - Quick response:
It has a fast response time and can provide feedback on changes in dissolved oxygen concentration in water bodies in a short period of time, meeting the needs of real-time adjustment of process parameters based on dissolved oxygen during sewage treatment, as well as timely grasp of dissolved oxygen change trends in natural water pollution events. - No flow rate limitation:
The measurement process does not consume oxygen, and the sensor has no requirements for water flow velocity. Whether in slow-moving lakes, ponds, or almost stationary closed water bodies, it can stably and accurately measure dissolved oxygen, expanding its application range in various complex water flow environments. - Strong anti-interference ability:
Not affected by chemical substances such as hydrogen sulfide, it can stably obtain dissolved oxygen data in water bodies containing complex components or pollutants, such as industrial wastewater and polluted rivers, ensuring the reliability of measurement results under adverse water quality conditions. - Automatic temperature compensation:
Built in high-precision temperature transmitter, real-time monitoring of water temperature, and automatic temperature compensation of dissolved oxygen measurement results to eliminate the influence of temperature on dissolved oxygen solubility, ensuring the accuracy of measurement data under different water temperature conditions. - Intelligent communication:
Equipped with RS485 communication interface and supporting ModBus RTU communication protocol, it can easily connect with computers, data collectors and other devices to achieve remote data transmission, monitoring and management, facilitating the construction of automated and intelligent water quality monitoring systems, and meeting the data integration needs of large-scale and multi-point water quality monitoring. - Easy maintenance:
The design without membrane or electrolyte eliminates the need for tedious maintenance operations such as membrane replacement and electrolyte addition; The calibration method is simple, reducing user maintenance workload and professional skill requirements, lowering usage and time costs, and improving equipment efficiency.
| Product | Dissolved Oxygen sensor |
| Model | MEJ-DO7018 |
| Accuracy | Dissolved oxygen: ±0.3mg/L Temperature: ±0.2℃ |
| Measure range | Dissolved oxygen: (0~20) mg/L or 0~200% saturation Temperature: (0~50)℃ |
| Maximum water depth | 10m |
| Power supply | DC 5~24 VDC, current <50 mA |
| Operating temperature | 0 ~ 50°C |
| Temperature accuracy | ±0.2°C |
| Signal interface | Modbus RS-485 |
| Ingress protection | IP68 |
| Sensor material | Titanium alloy |
| Fluorescent cap life | One year (under normal use) |
| Cable | 5m, 10m, 15m, 30m |
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Component workshop
Calibration workshop
Product verification
