WQC-702

Multi-Parameter Water Quality Controller

Central controller for online water quality systems, with a 7-inch touchscreen, multi-sensor inputs, relays, 4 to 20 mA, RS485 and 4G.

Controller7-inch touchscreenRS485Modbus RTU4-20 mARelays4GIP67

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WQC-702 Multi-Parameter Water Quality Controller

Water Quality Monitoring

Family: WQC Series
Category: Water Quality Monitoring
Display: 7-inch capacitive colour touchscreen
Sensor inputs: Digital and analog sensors, automatic recognition

01Overview

Engineered for the field

The central unit of an online water quality monitoring system. The controller powers and reads multiple connected sensors, recognising each one automatically and pulling measurements, calibration data and diagnostics from digital sensors over RS485 Modbus RTU. A 7-inch colour touchscreen presents live values, trend curves, alarms and maintenance reminders, while 32 GB of internal storage holds more than ten years of measurement and event records. Two 4 to 20 mA outputs (expandable to eight), three programmable relays (expandable to nine) and RS485 link it to PLC and SCADA systems, and built-in 4G, with optional Ethernet and Wi-Fi, brings remote sites online. The IP67 housing mounts on a wall, pole or panel.

02Key Features

What makes the WQC-702 different

Multi-sensor inputs

Connects several digital or analog sensors, with automatic sensor recognition.

Touchscreen with trends

7-inch colour touchscreen shows live values, trend curves, alarms and maintenance reminders.

Control and integration outputs

Programmable relays for alarms, control and cleaning, plus 4 to 20 mA and RS485 Modbus, with optional Profibus DP and HART.

Over ten years of data

Built-in 32 GB storage keeps measurement and event records for more than a decade.

Remote connectivity

4G as standard, with optional Ethernet and Wi-Fi for unattended sites.

03Technical Specifications

Detailed specifications

Overview

Display: 7-inch capacitive colour touchscreen
Sensor inputs: Digital and analog sensors, automatic recognition
Outputs: 4 to 20 mA, relays, RS485 Modbus RTU
Connectivity: 4G (optional Ethernet, Wi-Fi)

Outputs

Analog outputs: 2 x 0/4 to 20 mA, expandable to 8
Relay outputs: 3 programmable, expandable to 9
Digital output: 1 x RS485 Modbus RTU; optional Profibus DP or HART
USB port: Data download and firmware upgrades

Data

Storage: 32 GB, over 10 years of records
Display contents: Measurements, current output, history, alarms, maintenance reminders, data quality
Languages: English and Chinese

Power and Environment