MEJ-DO7019 liquid analysis instrument dissolved oxygen transmitter is an instrument that plays a key role in the field of water quality monitoring. It adopts advanced electrochemical sensing technology, which can accurately measure the dissolved oxygen content in aqueous solutions. Its measurement range usually covers the dissolved oxygen range of common water environments, which can meet the measurement needs of various scenarios.
Characteristics:
Accuracy:±3%FS
Signal interface: Modbus RS-485
No membrane and no electrolyte required
No need to consume oxygenAutomatic temperature compensation
Intro to MEJ-DO7019 Liquid analyzing meter dissolved oxygen transmitter
High precision measurement:
By utilizing advanced electrochemical sensing technology, DO7019 can accurately measure the dissolved oxygen content in aqueous solutions with excellent resolution, capturing subtle changes in dissolved oxygen values with small measurement errors, providing reliable data for water quality monitoring.
For example, in monitoring drinking water sources, it is possible to accurately determine whether the water quality meets the standards.
Convenient communication and compatibility:
Equipped with standard RS485 digital interface, supporting Modbus RTU protocol, it can easily interface with various upper computers, data acquisition systems or automation control systems, achieving fast remote transmission and centralized management of data.
It can seamlessly integrate into existing industrial automation monitoring networks and work together with other devices without the need for complex interface conversion or additional development of communication programs.
Automatic compensation function:
Equipped with automatic temperature compensation function, built-in high-precision temperature sensor, real-time sensing of environmental temperature changes and automatic correction of dissolved oxygen measurement results, reducing the impact of temperature on measurement.
It also supports manual atmospheric pressure and seawater salinity compensation. Users can set compensation parameters based on the actual measurement environment’s atmospheric pressure and salinity, making the measurement results more accurate in different environments.
Whether in high-altitude water bodies or in seawater and freshwater environments with different salinities, dissolved oxygen content can be accurately measured.
Strong stability:
In the design and manufacturing process, stability is emphasized, high-quality materials and advanced processes are used, which can adapt to complex water quality conditions and variable temperature environments, operate stably for a long time, continuously output accurate measurement data, and reduce data errors and monitoring interruptions caused by equipment failures or performance fluctuations.
In the long-term operation of sewage treatment plants, stable data support can always be provided.
Wide applicability:
Widely used in multiple fields. In sewage treatment plants, assist staff in real-time monitoring of dissolved oxygen changes in sewage, optimize aeration and other treatment processes, and improve sewage treatment efficiency;
In aquaculture, helping farmers timely understand the dissolved oxygen status of aquaculture water to ensure the living environment of aquatic organisms;
In the field of environmental monitoring, it is used for long-term monitoring of surface water such as lakes and rivers, providing key data for ecological environment assessment.
Multiple unit display and switching:
Supports two units of display:
oxygen concentration (mg/L) and saturation (% SAT). Users can easily switch between them through the software to meet the data expression needs of different scenarios and users.
In scientific research experiments, researchers can flexibly choose suitable units to analyze data according to experimental requirements.
Scalability:
The basic unit is expandable and can include two or four contacts for functions such as limit contacts, PID controllers, flushing process timers, etc.
By extending the software package, it is also possible to achieve custom current output characteristics and automatic cleaning functions, making it convenient for users to expand and customize functions according to specific usage scenarios and needs.
Diverse communication protocols:
In addition to supporting the Modbus RTU protocol, it is also compatible with HART or PROFIBUS-PA/- DP communication protocols and provides a second current output, which can meet the communication and data exchange needs of various devices in different application scenarios, enhancing the universality of the equipment in different industrial automation systems.
| Product | Dissolved Oxygen sensor |
| Model | MEJ-DO7019 |
| Accuracy | ±3%FS |
| Measure range | 0-20mg/L or 0-200% saturation |
| Power supply | 6~12 VDC, current <50mA |
| Operating temperature | 0 ~ 50°C |
| Temperature accuracy | ±0.5°C |
| Communication | Modbus RS-485 |
| Ingress protection | IP68 |
| Sensor material | SS316L/Titanium alloy/POM |
| Fluorescent cap life | One year (under normal use) |
| Cable | 5m, 10m, 15m, 30m |
| Response Time | 60 Sec |
| Temperature Sensor | NTC |
| Max pressure | 3 bar |
| Dimension | 22mm*188.3mm |
| Installation thread | M22*1.5 mm |
| Calibrations | 100% saturated oxygen(or air) calibration and zero point calibration |
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Component workshop
Calibration workshop
Product verification
