Continuous ORP measurement using a composite measurement and reference electrode


Online ORP Analyzer
A source-verified controller-and-sensor system for continuous ORP monitoring in municipal water, wastewater, surface water and industrial processes. The source file does not state a commercial model number.
Only values confirmed in the two Word files are published. The source does not state commercial model numbers, so products are presented as configurations; final electrode, controller, mounting, cable and accessories are controlled by the project confirmation.
Construction and product highlights
Three 4–20 mA outputs and three configurable relays
Modbus RS485 for real-time measurement transmission
Visual alarm functions and guided operation
Wall, panel or pipe-clamp controller mounting
Optional analog-to-digital module described in the source
Verified technical specifications
Confirm water chemistry, expected ORP range, temperature, pressure, sensor mounting, cable, controller power and required analog, relay and Modbus interfaces before quotation.
- Measuring range
- ±2000 mV
- Measurement accuracy
- ±5 mV
- Pressure
- ≤0.6 MPa
- Sensor construction
- Black polypropylene; Ag/AgCl reference gel
- Operating temperature
- Sensor 0–80°C, non-freezing
- Response time
- ≤10 s to 95% of the final value after stirring
- Dimensions
- Ø28.7 × 195 mm; 0.2 kg
- Protection
- IP68 / NEMA6P
- Cable
- 10 m standard; extendable
- Display
- 128 × 64 graphic LCD with LED high-brightness backlight
- Power
- 85–500 VAC, 50/60 Hz; 9–36 VDC
- Controller material
- PA66+GF25+FR upper cover; powder-coated aluminum-alloy lower housing
- Analog output
- 3 × 4–20 mA
- Relays
- 3 configurable relays
- Digital communication
- Modbus RS485
- Storage temperature
- -20–70°C
- Controller operating temperature
- -15–60°C
- Controller protection
- IP65 / NEMA4X
- Controller dimensions
- 145 × 125 × 162 mm
- Weight
- 1.35 kg
Recommended applications
Tap-water treatment
Continuous ORP monitoring through water-treatment processes.
Municipal wastewater
Track oxidation-reduction conditions across treatment stages and connect alarms to the control system.
Surface-water monitoring
Add ORP to multiparameter environmental monitoring points.
Industrial water and wastewater
Integrate continuous ORP trends with plant recording and automation.
Items to confirm
Confirm water chemistry, expected ORP range, temperature, pressure, sensor mounting, cable, controller power and required analog, relay and Modbus interfaces before quotation.
- 01Water matrix, process stage and ORP control objective
- 02Normal, setpoint and upset positive/negative peaks
- 03Temperature, pressure, material, thread and mounting
- 04Cable, controller input, 4–20 mA, relays and Modbus RS485
Parameter sources
These files support the published values. Product images come directly from the neutral technical files and do not present another company brand.
Get a quote- ORP在线分析仪.docx✓
- ORP传感器.docx✓
Related ORP products
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