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Digital RS485 Oxidation Reduction Potential Sensor Modbus Various Industries

Basic Information
Place of Origin: China
Brand Name: Desun Uniwill
Model Number: DS525
Minimum Order Quantity: 0-100pcs
Price: According to the specific quantity
Packaging Details: carton packaging
Delivery Time: 7-15 working days
Payment Terms: L/C, D/A, D/P, T/T
Detail Information
Range: -999~999mV Deepest Depth: Underwater 30m
Protection Level: IP68 Maximum Operating Pressure: 6bar
Output Signal: RS-485, MODBUS Protocol Power Information: DC 5~12V, Current <50mA
Probe Cable Length: 5 Meters (default), Can Be Customized Housing Material: POM
Assembly: Input Type Temperature Range: 0~ 50°C
High Light:

RS485 Oxidation Reduction Potential Sensor


Oxidation Reduction Potential Sensor Modbus


digital orp meter

Product Description

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

Maintenance schedule

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


Maintenance method

Sensor maintenance

  • External surface of the sensor: Wash the external surface of the sensor with tap water. If debris remains, wipe it with a moist soft cloth.
  • Check the cable of the sensor: The cable should not be tight during normal work, otherwise the internal wires of the cable will be easily broken and the sensor will not work properly.
  • Sensor storage: When the sensor is not in use, you should fasten the black plastic cap and check whether the sponge inside is wet. If it is not wet enough, please add 3mol / L potassium chloride solution and let the electrode be stored in the solution with potassium chloride.



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.


Digital RS485 Oxidation Reduction Potential Sensor Modbus Various Industries 0

Frequently Asked Questions



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

Contact Details

Phone Number : +86 181 8242 9986

WhatsApp : +8618182429986