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Smart RS485 Digital pH Water Quality Sensor – Supports IoT Cloud Platform Integration / Remote Real-Time Monitoring / Automatic Cleaning Function AMT-PH300
Intelligent RS485 Digital pH Water Quality Sensor – Supports IoT Cloud Platform Integration / Remote Real-Time Monitoring / Automatic Cleaning Function
Intelligent RS485 Digital pH Water Quality Sensor – Supports IoT Cloud Platform Integration / Remote Real-Time Monitoring / Automatic Cleaning Function
Intelligent RS485 Digital pH Water Quality Sensor – Supports IoT Cloud Platform Integration / Remote Real-Time Monitoring / Automatic Cleaning Function
Intelligent RS485 Digital pH Water Quality Sensor – Supports IoT Cloud Platform Integration / Remote Real-Time Monitoring / Automatic Cleaning Function
Intelligent RS485 Digital pH Water Quality Sensor – Supports IoT Cloud Platform Integration / Remote Real-Time Monitoring / Automatic Cleaning Function

Intelligent RS485 Digital pH Water Quality Sensor – Supports IoT Cloud Platform Integration / Remote Real-Time Monitoring / Automatic Cleaning Function - AMT-PH300

Measurement range: pH: 0~14.00pH;
Accuracy: ±0.02pH;
Resolution: 0.01pH;
Stability: ≤0.02pH/24 hours;
Output signal: A: voltage signal (choose one from 0~2V, 0~5V, 0~10V)
B: 4~20mA (current loop)
C: RS485 (standard Modbus-RTU protocol, device default address: 01)

Product Model: AMT-PH300

Product Introduction

AMT-PH300 Smart RS485 Digital pH Water Quality Sensor – Supports IoT Cloud Platform Integration / Remote Real-Time Monitoring / Automatic Cleaning Function
The pH value is one of the most commonly used water quality testing indicators. The pH of natural water is mostly in the range of 6 to 9; the pH of drinking water is required to be between 6.5 and 8.5; the pH of some industrial water should be maintained between 7.0 and 8.5, otherwise it will cause corrosion to metal equipment and pipelines. pH value is both different from and related to acidity and alkalinity. pH value indicates the strength of acidity or alkalinity of water, while acidity or alkalinity refers to the content of acidic or alkaline substances in water. Changes in the pH value of water quality indicate the degree of water pollution.

The direct relationship between human health and pH value is not clear, but pH value can affect health by influencing other water quality indicators and water treatment effectiveness.

A pH value in the range of 6.5 to 9.5 does not affect drinking or health, but a pH value that is too low can corrode water pipes, while a pH value that is too high can cause dissolved salts to precipitate and reduce the effectiveness of chlorination disinfection. According to surveys, the pH value of most natural waters in China ranges from 6.5 to 8.5, so China's 'Standards for Drinking Water Quality' stipulates that the pH value should be between 6.5 and 8.5.

This product is an upgraded intelligent version of the acidity meter, capable of continuous measurement and control of pH values in water quality and wastewater.


Measurement range: pH: 0~14.00pH;
Accuracy: ±0.02pH;
Resolution: 0.01pH;
Stability: ≤0.02pH/24 hours;
Output signal: A: voltage signal (choose one from 0~2V, 0~5V, 0~10V)
B: 4~20mA (current loop)
C: RS485 (standard Modbus-RTU protocol, device default address: 01)

Main Application Areas

  • Wastewater Treatment — Monitor pH levels in industrial and municipal wastewater to ensure compliance and optimize treatment processes.
  • Aquaculture — Maintain optimal water quality in fish farms and aquaculture systems by continuously tracking pH.
  • Environmental Monitoring — Measure pH in rivers, lakes, and groundwater for environmental protection and research.
  • Industrial Process Control — Monitor pH in chemical, pharmaceutical, and food processing to ensure product quality and safety.

Keywords:digital pH sensor, RS485 pH sensor, water quality sensor, IoT pH sensor, online pH monitor, automatic cleaning pH sensor, industrial pH sensor, AMT-PH300