The manual provides overview, hardware connection, configuration software usage, and Modbus communication protocol for the PR-3002-EC-N01-* industrial EC…
The PR-3002-EC-N01-* EC transmitter measures solution conductivity with automatic temperature compensation and supports salt and TDS conversion. It offers a conductivity range of 1‑20000 µS/cm, temperature range of -20 °C to 100 °C, and an IP65‑rated enclosure for outdoor use.
The document details hardware installation, sensor wiring, and power requirements, explains how to install and use the provided 485 configuration software for parameter setting and calibration, and describes the Modbus‑RTU communication protocol, including baud‑rate options, register addresses, and example command frames. This manual is written in Chinese.
| Supply voltage | DC10~30V |
|---|---|
| Communication interface | RS485 (Modbus‑RTU) |
| Supported baud rates | 1200‑115200 bit/s (default 4800) |
| Conductivity measurement range | 1‑20000 µS/cm (K=1: 1‑2000 µS/cm, K=10: 10‑20000 µS/cm) |
| Conductivity resolution | 0.1 µS/cm (K=1) / 1 µS/cm (K=10) |
| Conductivity accuracy | ±1 % FS |
| Temperature measurement range | -20 °C to 100 °C |
| Temperature accuracy | ±0.5 °C |
| Maximum sensors on one RS485 bus | 254 |
The default baud rate is 4800 bit/s.
Up to 254 sensors can be connected on one RS485 bus.
Calibration should be performed before each use and is recommended every three months for long‑term operation.
It accepts a wide DC voltage range of 10 V to 30 V.