Great Instrument's Integrated Water Quality Monitoring System

    Great (Xi'an) Instrument is pleased to present our all‑in‑one water quality monitoring package, combining the GMWA‑1000 multi‑parameter controller with a full suite of digital water sensors for continuous online water analysis.

    The core GMWA‑1000 multi‑parameter controller features a clear display and multiple cable ports, designed to collect and process readings from matched sensors simultaneously. It supports RS485 Modbus RTU communication, enabling seamless data upload to PLC, edge gateways and SCADA systems for remote monitoring.

    This set includes three professional digital sensors:

• GPHS‑D1000F pH Sensor: Measuring from 0 to 14 pH, with built‑in automatic temperature compensation, pressure resistance up to 3 bar.

• GECS‑S1000D Conductivity (EC) Sensor: For ultra‑pure water conductivity measurement, measuring range 0–20 μS/cm, rated pressure up to 4 bar.

• GTS‑1000S Suspended Solids (SS) / Turbidity Sensor: Range up to 4000 NTU, suitable for detecting suspended solids in wastewater and process water.

    All sensors offer dual output options: standard 4–20 mA analog signal and RS485 Modbus‑RTU digital communication. Powered by DC12 V, they deliver stable, repeatable measurement under working temperatures from 0 °C to 60 °C.

    Engineered for demanding field conditions, this integrated monitoring package serves a wide range of applications: municipal wastewater treatment, industrial process water monitoring, freshwater recirculating aquaculture systems (RAS), reverse osmosis water purification and environmental water quality supervision.

    With compact structure, easy installation and simple calibration, our complete water quality monitoring kit provides a cost‑effective and reliable solution for system integrators, EPC contractors and water treatment operators worldwide.

    If you require datasheets, register map documents or custom configuration for your project, please get in touch with our sales team.