Xi'an Desun Uniwill Electronic Technology Co., Ltd.
Our Vision Aspire to be a leader in water quality monitoring - our pursuit is to be respected by customers, employees, partners and other companies in the industry. Core Values Rigorous, Efficient,
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China factory direct sale digital RS485 ORP sensor for water quality monitoring various industries supports Modbus
Desun Uniwill Digital ORP sensor adopts industrial on-line electrode and built-in temperature sensor, which can automatically compensate for temperature, and is suitable for long-term monitoring of online environment. The sensor adopts RS485 output and supports Modbus, which can realize networking and system integration without a controller.
Range: -999 ~ 999mV Accuracy: ± 20mV
Resolution: 1mV
0 ~ 50 ℃;
IP68 protection, water depth within 10 meters
Built-in temperature sensor, automatic temperature compensation Digital sensor,
support RS-485, MODBUS protocol
Adopt high-performance industrial online electrode, can work stably for a long time
Technical parameter
| Item | Parameters |
| model | DS525 |
| Range | -999~999mV |
| Precision | ±20mV |
| Resolution | 1mV |
| Deepest depth | Underwater 30m |
| Protection level | IP68 |
| Max operating pressure | 6bar |
| storage temperature | 0~ 60 °C |
| temperature range | 0~ 50°C |
| Sensor interface | Support RS-485, MODBUS protocol |
| assembly | Input type |
| Power information | DC 5~12V, current <50mA |
| size | Φ 26 * 167.5 mm |
| Probe cable length | 10 meters (default), can be customized |
| Housing material | POM, SS316 |
Maintenance methods and common problems
Maintenance schedule and method
It is recommended to periodically calibrate or clean the sensor surface according to the actual application scenario.
| Maintenance tasks, | Recommended maintenance frequency |
| Calibrate the sensor (if required by the competent authority) | According to the maintenance schedule required by the competent authority |
The probe contains sensitive optical and electronic components. Ensure that the probe is not subject to severe mechanical impact. Damage to the sensor due to impact or manpower will not be covered by the warranty. Water ingress to the sensor due to replacement of the ORP electrode is not covered by the warranty.
| Error | Possible causes | Solutions |
| The operation interface cannot be connected or the measurement results are not displayed | Controller and cable connection error | Reconnect the controller and cables |
| Cable failure | Please contact us | |
| Measured values are too high, too low, or the values remain unstable | Measurement shifted | Recalibration |
| Water has entered the product | Please contact us | |
| The ORP electrolyte is exhausted | Replace the ORP electrochemical part |