Introduction
KWS-500Â online ORP sensor uses long-life industrial online electrodes and built-in temperature sensor for automatic temperature compensation, suitable for long-term online monitoring. The sensor uses RS485 communication interface and standard Modbus protocol, which can be easily networked and integrated without a controller. It is widely used in water quality treatment, hydrological monitoring, wastewater treatment, swimming pools, industrial control, biology and other fields.
Feature  Â
- Digital sensor, RS-485 output, standard MODBUS protocol;
- No electrolyte required, strong anti-interference, no need for frequent calibration;
- Built-in temperature sensor, automatic temperature compensation;
- Adopt high-performance industrial online electrode, can work stably for a long time;
- Built-in calibration parameters, accurately calibrated at the factory, can be directly installed and used.
Technical Specifications
| Measuring principle | Platinum electrode method |
| Range | -1999mV~1999mV |
| Accuracy | ±20mV |
| Resolution | 1mV |
| Ip Grade | IP68 |
| Operating Temperature | 0~50℃ |
| Output | RS485, Modbus |
| Power Consumption | 0.3W (recommend power: DC 12-24V, ≥1A ) |
| Max. pressure | 3 bar |
| Casing Dimension | φ28mm*194mm |
| Installation | NPT3/4, immersion installation |
| Cable Length | Standard 10m, customizable |
| Calibration | One-point calibration |
| Casing Material | POMÂ + Titanium |
Note: 1. The above technical parameters are all data under laboratory standard solution environment;
- The sensor life and maintenance calibration frequency are related to the actual field conditions
Dimensions
Wiring
4 wire AWG-24 or AWG-26 shielding wire. OD=5mm
red – power supply (VCC)
white – 485 data _B (485_B)
green – 485 data _A (485_A)
black – ground (GND)
