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YEX-S2-EC-S-T Online Salinity Sensor

Stable and Reliable High-Precision Salinity Monitoring Solution

In seawater aquaculture, industrial water treatment, and high-salinity environment monitoring, traditional salinity sensors often face issues such as accuracy drift, weak anti-interference capability, and complex installation and maintenance. The Yexsensor YEX-S2-EC-S-T Online Salinity Sensor is specially designed for harsh working conditions. It adopts a highly stable conductivity measurement principle combined with automatic temperature compensation and industrial-grade RS485 communication, providing users with a long-term stable, high-precision, and seamlessly integrable online salinity monitoring solution.

Core Selling Points

• High precision and automatic temperature compensation, ensuring stable output across the full 0～70.0 PSU range

• IP68 protection rating and corrosion-resistant materials, suitable for long-term submersion in seawater or high-salinity environments

• RS485 (Modbus/RTU) digital output, easy integration with PLC, DCS, and industrial IoT systems

YEX-S2-EC-S-T Online Salinity Sensor Product Overview

The Yexsensor YEX-S2-EC-S-T Online Salinity Sensor is a submersible salinity monitoring device developed specifically for seawater, high-salinity water, and industrial water treatment applications. It achieves real-time online detection of salinity (PSU) through precision conductivity measurement technology and features a built-in Pt1000 automatic temperature compensation to effectively eliminate the influence of temperature fluctuations on measurement results. The sensor supports 12～24VDC wide voltage power supply and outputs standard Modbus/RTU protocol signals, allowing direct connection with third-party industrial control systems. This helps engineering technicians achieve remote monitoring, data logging, and automated control, improving the stability and intelligence level of the entire water treatment system.

YEX-S2-EC-S-T Online Salinity Sensor Key Advantages

1. High Precision and Stability

Measurement accuracy reaches ±1.5%F.S. (salinity) and ±0.5℃ (temperature), with a resolution of 0.1 PSU. It uses two-point calibration (zero + slope) combined with automatic temperature compensation algorithms, maintaining excellent consistency within the 0～65℃ operating temperature range, effectively reducing long-term drift and meeting the strict reliability requirements of industrial process control.

2. Strong Anti-Interference and Industrial-Grade Communication

RS485 digital signal output adopts the standard Modbus/RTU protocol with excellent electromagnetic interference resistance, suitable for complex industrial field environments. It supports multi-device networking with a maximum transmission distance of hundreds of meters, facilitating seamless integration with PLC, DCS, industrial control computers, paperless recorders, or touch screens, significantly reducing wiring difficulty and system integration costs.

3. Reliable Protection and Durable Design

IP68 protection rating allows long-term submersion. Default ABS material (POM optional) is resistant to seawater corrosion. The 3/4 NPT thread installation method supports pipe, tank, and immersion installation. The cable has a diameter of Φ6mm with good corrosion resistance, standard 5-meter length and supports customization, ensuring installation flexibility and long-term reliability.

4. Low Power Consumption and Easy Maintenance

Power consumption is only 0.2W@12V, suitable for continuous online operation. Maintenance is simple: regularly clean the electrode surface with a soft brush and rinse with distilled water, then restore performance with two-point calibration. The product undergoes 72-hour aging testing before leaving the factory, ensuring stable and reliable quality.

YEX-S2-EC-S-T Online Salinity Sensor Technical Specifications

YEX-S2-EC-S-T Online Salinity Sensor Application Scenarios

1. Seawater Aquaculture & Aquatic Farming: Real-time monitoring of seawater salinity changes to provide accurate water quality data for shrimp, crab, fish, and shellfish farming, optimizing the growth environment.

2. Seawater Desalination & Water Treatment Plants: Online monitoring of inlet and outlet salinity to ensure stable process parameters and product water quality.

3. Industrial Circulating Cooling Water & High-Salinity Wastewater Treatment: Monitor salinity in high-salinity process water or wastewater for process control and discharge compliance management.

4. Environmental Monitoring Stations & Laboratories: Long-term continuous salinity monitoring in river estuaries, salt lakes, or scientific experiments.

5. Food Processing & Pharmaceutical Industry: Monitor concentration of specific high-salinity solutions to ensure production process consistency.

FAQ

Q1: What communication protocols does the YEX-S2-EC-S-T support?

A1: It supports the standard Modbus/RTU protocol and can be directly connected to mainstream PLC, DCS, and configuration software via RS485 interface.

Q2: How does the sensor perform temperature compensation?

A2: It features a built-in Pt1000 precision temperature sensor that realizes full-range automatic temperature compensation, effectively eliminating the influence of temperature on salinity measurement.

Q3: What should be noted during installation?

A3: During installation, the sensor should be at least 2cm away from the bottom and side walls of the container to avoid boundary effects affecting measurement accuracy. It supports direct installation with 3/4 NPT thread.

Q4: How to calibrate the sensor?

A4: Use the two-point calibration method. First perform zero-point calibration (stand in air for 3 minutes), then perform slope calibration using standard solution in the 10%～100% range.

Q5: Can the cable be extended or customized?

A5: Yes. Different cable lengths can be customized. All interfaces are waterproofed, suitable for long-term immersion environments.

Q6: What is the maximum working pressure?

A6: Working pressure ＜0.6 MPa, suitable for most atmospheric and medium-low pressure pipelines and water tanks.

Q7: How to determine the maintenance frequency?

A7: It is recommended to regularly clean the electrode surface (with soft brush + distilled water) and perform calibration according to actual working conditions. The specific cycle is determined by the user based on the cleanliness of the medium.

Q8: Do you provide calibration solutions?

A8: The product comes with a manual and certificate of conformity. Calibration solutions are optional. After-sales technical guidance and support are provided.

Summary

The Yexsensor YEX-S2-EC-S-T Online Salinity Sensor provides a trustworthy online monitoring tool for the seawater and industrial water treatment fields with its high precision, strong stability, and excellent integration. It helps engineering teams reduce maintenance workload, improve data reliability, and promote the intelligent upgrading of water treatment processes.

Need further information on technical selection, customized cable length, or on-site integration solutions? Welcome to contact the Yexsensor technical support team. We will provide you with professional engineering solutions.