pH Sensor for Water Quality, 0~14pH

$239.96

Good price water quality pH sensor for sale. The pH sensor uses the glass electrode method, measuring 0~14 pH with a resolution of 0.01 and accuracy of ±0.1. It has fast response (<30s), automatic temperature compensation (Pt1000), and two-point calibration for precise readings. With RS-485 (Modbus RTU) output, durable ABS construction, and submersion installation (3/4 NPT), it operates efficiently in 0~60°C and ≤0.2 MPa. Ideal for water quality applications.

SKU: ATO-WQS-PH

Qty:

Overview

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

Model	ATO-PHG-106
Measurement Principle	Glass Electrode Method
Range & Resolution	0~14 pH, Resolution: 0.01
Accuracy	±0.1 of measured value; ±0.3°C
Repeatability	±0.1
Response Time (T90)	<30 seconds
Temperature Accuracy	±0.5°C
Minimum Detection Limit	0.1
Calibration Method	Two-point calibration
Temperature Compensation	Automatic temperature compensation (Pt1000)
Output Mode	RS485 (Modbus RTU)
Storage Temperature	-5~65°C
Operating Conditions	0~60°C, ≤0.2 MPa
Outer Material	ABS
Installation Method	Submersion installation, 3/4 NPT
Power Consumption	0.2 W @12V

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)

pH sensor size

Installation Method

Ammonium nitrogen sensor 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

pH sensor 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.

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