ORP
IDR Integrated Digital ORP Sensor
ORP
Integrated digital ORP sensor for oxidation-reduction potential monitoring — digital Modbus output, plug-and-play with TENGINE controllers.
- Fully digital probe with on-board measurement and storage
- RS485 Modbus RTU networking over long cable runs
- Stable redox measurement for biological and disinfection processes
- IP68 submersible, low-maintenance design
Overview
An ORP sensor measures the oxidation-reduction potential of water, indicating the process conditions in biological treatment zones and the disinfection capacity of chlorinated water.
The IDR Integrated Digital ORP Sensor uses a platinum electrode as the indicating electrode and a saturated calomel electrode as the reference. Together with the water sample, they form a galvanic cell. The oxidation-reduction potential is measured relative to the reference electrode by an electronic millivoltmeter, then converted to an ORP value relative to the Standard Hydrogen Electrode (SHE) for final reporting.
Typical Applications
Features
- High-impedance differential input suitable for a wide range of applications
- Digitized sensor design significantly enhances anti-interference capability
- Long-distance cabling up to several hundred meters without compromising measurement accuracy
- Corrosion-resistant housing for immersion service
Specifications
| Parameter | Specification |
|---|---|
| Measurement Method | Glass electrode method |
| Measuring Range | -2000 to 2000 mV |
| Accuracy | Electronic unit: ±1 mV; based on ORP standard solution: ±20 mV or ±1% FS (whichever is greater) |
| Repeatability | ±20 mV or ±1% FS |
| Resolution | 0.3 mV |
| Drift | ±20 mV or ±1% FS |
| Operating Temperature | 0 to 60 °C (non-freezing) |
| Protection Rating | IP68 |
| Operating Pressure | 0–4 bar |
| Communication Interface | RS485 interface, Modbus RTU protocol |
| Power Supply | 9–28 VDC |
| Dimensions | Φ40.5 × 260 mm |
| Material | 316L stainless steel |
Frequently Asked Questions
Related Products
Online ORP analyzer for oxidation-reduction potential monitoring in biological and disinfection processes.
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