User manual for the PR PR-3002-COD-N01 Ver2.0 online COD transmitter, covering installation, wiring, software setup, communication, calibration and maintenance.
The PR-3002-COD-N01 Ver2.0 is an online chemical oxygen demand (COD) transmitter that uses dual‑wavelength UV absorption and includes a built‑in self‑cleaning system and turbidity compensation. It communicates via RS485 using the MODBUS‑RTU protocol and can be powered from 12‑30 V DC.
The manual provides product overview, hardware installation, wiring instructions, configuration software usage, communication protocol details, calibration procedures for both turbidity and COD, and maintenance guidelines to ensure reliable long‑term operation. This manual is written in Chinese.
| Supply Voltage | DC 12~30 V |
|---|---|
| Power Consumption | 0.6 W (normal), 1.8 W (self‑cleaning) |
| Communication Interface | RS485, MODBUS‑RTU |
| Temperature Resolution | 0.1 °C |
| IP Rating | IP68 |
| Maximum Pressure | < 0.1 MPa |
| Cable Length (default) | 5 m (customizable) |
| Housing Material | Corrosion‑resistant plastic, stainless steel |
| Self‑Cleaning System Lifetime | 18 months |
It uses an RS485 interface with the standard MODBUS‑RTU protocol.
Calibration is recommended every three months, or more frequently depending on application conditions.
The device operates from a DC supply of 12 to 30 V.