Product Introduction

The KH.SZ-PHG Online pH Sensor is a high-precision digital water quality monitoring device designed for continuous pH measurement in rivers, reservoirs, lakes, and freshwater environmental monitoring systems.

Using advanced glass electrode technology combined with intelligent digital processing, the sensor provides stable and accurate pH measurement with automatic temperature compensation.

Designed for long-term outdoor deployment, the IP68 waterproof structure ensures reliable operation in challenging environments. The sensor supports RS485 Modbus RTU communication, enabling seamless integration with telemetry systems, SCADA platforms, and IoT-based water quality monitoring networks.

The KH.SZ-PHG is widely used in:

• River water quality monitoring
• Reservoir and lake observation
• Hydrological monitoring stations
• Environmental research projects
• Smart water management systems
• IoT water quality monitoring networks

By providing continuous pH data, the sensor helps users evaluate water conditions, support ecological protection, and improve water resource management.

How It Works

The KH.SZ-PHG uses a glass electrode measurement principle to detect hydrogen ion concentration in water.

The sensor converts pH variations into digital signals and applies automatic temperature compensation to maintain stable measurement accuracy under changing water temperatures.

The measurement process provides:

• Continuous online pH monitoring
• Automatic temperature compensation
• Real-time digital data transmission
• Reliable long-term water quality observation

Key Features

High-Precision Online pH Measurement

The advanced glass electrode provides accurate pH measurement across the full measurement range, supporting professional environmental and hydrological monitoring applications.

Automatic Temperature Compensation

Built-in temperature compensation technology maintains measurement stability under different water temperature conditions.

Fast Response and Low Drift

The sensor provides stable pH readings with fast response time and reduced measurement drift, supporting continuous monitoring requirements.

Long-Term Outdoor Stability

Designed for extended deployment in:

• Rivers
• Reservoirs
• Lakes
• Hydrological monitoring stations

with reduced maintenance requirements.

IP68 Waterproof Design

The rugged waterproof structure ensures reliable operation in outdoor water environments and long-term submerged applications.

IoT and SCADA Integration Ready

Supports RS485 Modbus RTU communication for connection with:

• Telemetry stations
• Data loggers
• SCADA systems
• Cloud monitoring platforms
• Smart water management networks

Compact and Flexible Installation

The compact design enables convenient installation on:

• Hydrological monitoring poles
• Water quality monitoring stations
• Environmental observation platforms

Application Scenarios

Rivers and Streams Water Quality Monitoring

Provides continuous pH data for river health assessment, ecological research, and environmental protection.

Reservoirs and Lakes Monitoring

Supports water resource management, pollution monitoring, and aquatic ecosystem protection.

Hydrological Monitoring Stations

Integrates with telemetry systems to provide automated water quality monitoring and remote data collection.

Flood Early Warning and Environmental Assessment

Works together with hydrological sensors to provide comprehensive environmental information for water risk assessment.

Smart Water Management Networks

Integrated into IoT-based water quality monitoring systems for centralized data analysis and intelligent water management.

Technical Specifications