pH Sensor for Water Quality, 0~14pH

Affordable pH sensor for water quality! Measures 0~14 pH with 0.01 resolution and ±0.1 accuracy. Features fast response, temperature compensation, and RS-485 output. Durable, easy to install, and ideal for water monitoring. 

Specification

Feature

• Accurate and Reliable Output: Equipped with RS-485 communication (Modbus RTU) for seamless integration with PLCs, DCS systems, industrial control computers, and other third-party devices like touch screens or data loggers.
• High Anti-Interference Performance: Features a dual high-impedance amplifier, providing strong anti-interference capabilities and ensuring fast and stable response times.
• Durable pH Electrode: The specialized pH electrode can withstand pressures up to 100 kPa (1 bar) and has an internal electrolyte that diffuses slowly over 20 months or more, ensuring long-lasting and stable performance.
• Easy Installation: Designed for submersion installation with a 3/4 NPT threaded connection, suitable for both open water and pipeline setups.
• Robust and Waterproof Design: Built with an IP68 protection rating, making it fully waterproof and suitable for harsh environments and long-term underwater use.
• Comprehensive Measurement Range: Measures 0~14 pH with a high resolution of 0.01, ensuring precise and reliable pH readings.
• Automatic Temperature Compensation: Includes a Pt1000 temperature sensor for automatic 

Dimension (Unit: mm)

Installation Method

Note: The sensor should not be installed upside down or horizontally, but at least at an angle of 15 degrees or more. The interface of sidewall mounting must be beveled at 15 degrees, otherwise it will affect the normal testing and use of the electrodes.  

Application

Tips: How does the pH sensor work?

The water quality pH sensor uses the glass electrode method, a widely trusted technology for measuring hydrogen ion activity in water. The sensor contains a glass bulb sensitive to pH changes and a reference electrode, which together generate a small voltage proportional to the pH of the solution. This voltage is converted into a pH value by the sensor's internal electronics. With features like automatic temperature compensation (Pt1000), the sensor ensures precise and reliable pH readings even in varying environmental conditions.