Intelligent Digital pH Sensor, supports RS-485 (Modbus RTU) and 0–5V/4–20mA analog dual output, can directly connect to PLC or cloud platform, built-in storage - 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 Introduction
AMT-PH300 intelligent digital pH sensor, supporting RS-485 (Modbus RTU) and 0–5V/4–20mA analog dual output, can be directly connected to PLC or cloud platform, with built-in storage chip to record calibration history for traceability management, meeting Industry 4.0 requirements.
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 — Monitoring pH levels in industrial and municipal wastewater to ensure compliance with environmental regulations.
- Chemical Processing — Controlling pH in chemical reactions to optimize yield and product quality.
- Aquaculture — Maintaining optimal pH in fish farming tanks to ensure healthy aquatic life.
- Drinking Water Treatment — Monitoring pH in potable water to ensure safety and taste.
Keywords：digital pH sensor, intelligent pH sensor, RS-485 pH sensor, Modbus RTU pH sensor, 4-20mA pH sensor, industrial pH sensor, water quality sensor, AMT-PH300
