The MEJ-DM2800 Membrane dissolved oxygen meter is a professional instrument used to measure the dissolved oxygen content in aqueous solutions, based on the principle of polarographic measurement. The dissolved oxygen value measured is closely related to the temperature, pressure, and salinity of the aqueous solution.
Characteristics:
Range: 0-20mg/L,0-200%,0-400hPa
Resolution: 0.01mg/L,0.1%,1hPa
Output signal: 4~20mA; Relay; RS485
Power supply: AC220V±10%; 50Hz/60Hz
Intro to MEJ-DM2800 Membrane dissolved oxygen meter
Accurate measurement and diverse functions:
Based on advanced polarographic analysis technology, combined with imported components and dissolved oxygen film heads, it can accurately measure the dissolved oxygen value in aqueous solutions, covering the measurement range of 0-20mg/L, 0-200%, 0-400hPa, with resolutions of 0.01mg/L, 0.1%, and 1hPa.
At the same time, it can measure the temperature value of the medium, support saturation measurement, oxygen partial pressure measurement, and can perform salinity compensation, especially suitable for scenarios involving complex water environments such as seawater aquaculture.
Clear display and long lifespan:
Equipped with a 2.8-inch 128 * 64 dot matrix screen, it has a 160 degree viewing angle, making it easy to read data clearly from different angles. Its lifespan is up to 100000 hours (about 10 years), reducing replacement costs and inconvenience caused by screen aging.
Strong signal output and anti-interference performance: It has analog and digital signal output functions, with a variety of output signal forms, including 4-20mA current signals, relay signals, and RS485 digital signals.
The use of isolated transmitter output greatly enhances anti-interference ability, ensuring stable data transmission even in complex electromagnetic environments and ensuring accurate transmission of measurement results.
Convenient operation and setting:
It has a Chinese menu style operation function, which is convenient for domestic users to get started and easily set various parameters. It also supports the selection of Chinese and English to meet the needs of different language usage.
Users can freely set high and low alarm functions and delay amounts to achieve delayed alarms with control functions; At the same time, a buzzer can be set up to issue an alarm reminder in a timely manner once the monitoring data exceeds the set range, making it easy for operators to quickly detect and handle abnormal situations.
Convenient calibration:
Air calibration can be performed, and the operation is relatively simple and fast. It can calibrate the instrument in a timely manner to ensure measurement accuracy during long-term use, reduce measurement errors caused by instrument drift, and maintain stable and reliable measurement performance.
| Product | Dissolved Oxygen meter(Membrane type) |
| Model | MEJ-DM2800 |
| Measure range | 0-20mg/L,0-200%,0-400hPa,-10~60℃ |
| Resolution | 0.01mg/L,0.1%,1hPa |
| Accuracy | ±1.5%FS |
| Temperature Type | NTC 10k/PT1000 |
| Auto A/manual H | -10-60℃ Resolution； 0.1℃ Correction |
| Correction accuracy | ±0.5℃ |
| Output Type 1 | 4-20mA output |
| Max.loop resistance | 750Ω |
| Repeatblitiy | ±0.5%FS |
| Output Type 2 | RS485 digital signal output |
| Communication protocol | Standard MODBUS-RTU(customizable) |
| Power supply | AC220V±10%50Hz/60Hz 5W Max 50Hz/60Hz |
| Alarm relay | AC250V,3A |
| Relative humidity | (10~85)%RH |
| Operation temperature | 0~60℃ |
| Storage condition | Temperature:15~65℃ Relative humidity:(5~95)%RH |
| Dimension | 100mm*100mm*150mm(H*W*D) |
| Ingress protection | IP54 |
| Weight | 0.65kg |
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Component workshop
Calibration workshop
Product verification
