Yexsensor YEX-CLI-206A Online Chloride Ion Sensor — High Precision RS-485 Modbus RTU Digital Chloride Ion Monitoring

Yexsensor YEX-CLI-206A Online Chloride Ion Sensor Product Overview

Yexsensor YEX-CLI-206A online chloride ion sensor (model: YEX-CLI-206A) is an industrial-grade digital sensor developed by Yexsensor for online continuous monitoring of chloride ion concentration in water. The sensor adopts the solid-state membrane ion selective electrode measurement principle and features fast response, simple operation, accurate measurement, and economical practicality.

The core of the sensor adopts patented chloride ion electrode technology: the internal reference solution slowly seeps out through the microporous salt bridge under a pressure of at least 100KPa (1Bar), keeping the reference system highly stable. The electrode life is much longer than that of ordinary industrial electrodes, effectively reducing the replacement frequency and maintenance cost in long-term use. It has a built-in Pt1000 temperature sensor to achieve automatic temperature compensation, ensuring that the measurement results are not affected by temperature fluctuations.

YEX-CLI-206A outputs standard RS-485 Modbus RTU protocol, which can be directly connected to PLC, DCS, industrial control computers, paperless recorders or touch screens and other third-party equipment without the need for additional transmitters, greatly simplifying system integration and reducing overall project costs. It provides two range options: 0～3500mg/L (resolution 0.1mg/L) and 0～35000mg/L (resolution 1mg/L), meeting diverse monitoring needs from drinking water to high-concentration industrial wastewater. The accuracy reaches ±5%, temperature accuracy ±0.5℃, and the two-point calibration method is easy to operate.

The housing is made of high-strength POM material, which is lightweight and has good corrosion resistance. It comes standard with 3/4NPT pipe thread and supports submersible installation, suitable for pipelines, tanks and open water bodies. The standard cable length is 5 meters (customizable), and the IP68 protection rating ensures that the sensor can be immersed in water for long-term use. The low power consumption design (0.2W@12V) combined with 12～24VDC wide voltage power supply is particularly suitable for on-site deployment and remote monitoring scenarios.

Yexsensor strictly controls product quality. Every YEX-CLI-206A sensor undergoes 72-hour aging test and stability verification to ensure zero defects upon delivery, providing professional and reliable guarantee for users' precise chloride ion monitoring.

Yexsensor YEX-CLI-206A Online Chloride Ion Sensor Core Technical Advantages

Patented Solid-State Membrane Ion Selective Electrode
   Adopts advanced solid-state membrane technology combined with patented reference solution slow seepage design. The reference system is stable and reliable, the electrode life is greatly extended, and maintenance and replacement costs are significantly reduced.

Wide Range High Resolution Measurement
   Provides two ranges of 0～3500mg/L and 0～35000mg/L, with resolutions of 0.1mg/L and 1mg/L respectively, adapting to various application scenarios such as low-concentration drinking water and high-concentration industrial wastewater.

Intelligent Automatic Compensation
   Built-in Pt1000 temperature sensor realizes automatic temperature compensation, effectively eliminating the influence of temperature changes on chloride ion measurement results and ensuring data consistency.

Digital Integration and Strong Anti-Interference
   RS-485 Modbus RTU protocol output supports long-distance transmission and multi-device networking, with strong anti-interference ability, flexible integration and reliable data transmission.

Rugged and Durable with Easy Installation
   IP68 protection rating combined with POM housing adapts to working conditions of 0～40℃ and ＜0.1MPa. The 3/4NPT submersible installation method is simple and convenient, suitable for various industrial sites.

Economical and Environmentally Friendly Features
   The measurement process does not consume chemical reagents, the operation is economical, and it meets the green and environmental protection requirements of modern water quality monitoring.

These core advantages make the Yexsensor YEX-CLI-206A an ideal upgrade solution for traditional chloride ion detection methods, helping users achieve continuous, automated and precise monitoring of chloride ion concentration.

YEX-CLI-206A Online Chloride Ion Sensor Technical Specifications

Yexsensor YEX-CLI-206A Online Chloride Ion Sensor Widely Applicable Scenarios

Yexsensor YEX-CLI-206A online chloride ion sensor, with its high stability, wide range and digital integration capabilities, is widely used in the following fields:

Drinking Water and Municipal Water Supply
   Tap water plants, secondary water supply, and end-of-pipe network monitoring to grasp chloride ion concentration in real time, ensure water quality meets national drinking water standards, and prevent pipeline corrosion and water quality exceedance.

Sewage Treatment and Industrial Wastewater Treatment
   Inlet and outlet water monitoring in sewage treatment plants and industrial wastewater treatment stations to help evaluate treatment effects, control chloride ion emissions, and meet environmental protection compliance requirements.

Seawater Desalination and Seawater Utilization
   Seawater desalination pretreatment, product water monitoring, and seawater cooling systems to accurately monitor chloride ion levels and prevent equipment corrosion and process abnormalities.

Industrial Circulating Cooling Water and Process Water
   Circulating water systems in power plants, chemical, pharmaceutical, food and other industries to monitor chloride ion concentration, optimize water treatment processes, extend equipment service life, and reduce maintenance costs.

Other Professional Fields
   Including groundwater monitoring, laboratory water quality verification, chloride-related chemical process control, etc. Whether in low-concentration drinking water or high-concentration wastewater scenarios, YEX-CLI-206A can provide stable and reliable chloride ion data support.

Yexsensor helps users build intelligent chloride ion monitoring systems through this sensor, improve water quality management levels, and ensure production safety and environmental compliance.

Installation and Electrical Connection

Installation Requirements

YEX-CLI-206A adopts submersible installation and can be directly screwed into pipelines, tanks or brackets using 3/4NPT pipe thread. During installation, ensure that the front end of the electrode is immersed in the measured solution. It is recommended to place it vertically or nearly vertically to avoid interference from air bubbles or dead zones.

Electrical Connection

The cable adopts 4-core twisted shielded wire, with the following wiring definition:

• Red wire: Power positive (12～24V DC)

• Black wire: Ground (GND)

• Blue wire: 485A

• White wire: 485B

Before powering on, be sure to carefully check the wiring sequence to avoid reverse connection and damage to the equipment. The cable outer diameter is Φ6mm. Considering long-term immersion in water (including seawater) or exposure to air, all wiring points must be waterproofed, and the cable should have certain anti-corrosion capability.

After installation, it is recommended to power on and run in clean water for a period of time. Confirm that the data is stable before performing on-site calibration.

Yexsensor YEX-CLI-206A Online Chloride Ion Sensor Maintenance and Calibration Guide

Daily Use and Maintenance

• Remove the electrode protection cap before use. Do not touch the sensitive parts of the electrode membrane head with your fingers.

• It is recommended to soak the new electrode in deionized water for 10 minutes before use, then activate it in dilute chloride ion solution for 2 hours.

• Keep the electrode dry during storage and place the sensor element in a protective bottle. Clean with deionized water and dry before long-term storage.

• Regularly check whether the wiring terminals are dry. If contaminated, wipe with anhydrous alcohol and blow dry before use.

• Avoid long-term immersion of the electrode in distilled water or protein solutions, and prevent contact with organic silicone grease.

Note on interfering ions: Sulfide ions, iodide ions, bromide ions, etc. will interfere with the measurement. Please evaluate according to the actual water quality when using.

Calibration Operation (Two-point Calibration)

The sensor has been calibrated before leaving the factory. Usually, frequent calibration is not required. Calibration is only performed when the measurement error exceeds the allowable range.

1. Zero point calibration: Place the sensor in a small bottle containing standard zero point solution, wait 5 minutes. If the displayed value exceeds the error range after stabilization, perform zero point calibration.

2. Slope calibration: Place the sensor in a small bottle containing standard slope solution, wait 5 minutes. If the displayed value exceeds the error range after stabilization, perform slope calibration.

Please refer to the product appendix or contact Yexsensor technical support for detailed calibration instructions. It is recommended to regularly verify the calibration status according to actual working conditions.

Quality Assurance and Service Support

Yexsensor quality inspection department is equipped with advanced testing equipment and strictly conducts 72-hour aging tests and stability tests on each YEX-CLI-206A in accordance with specifications to ensure high-quality products leave the factory. We provide one-year after-sales service from the date of sale (excluding damage caused by improper use). For repairs, please send it back to the company with good packaging, and we will repair the relevant damaged parts free of charge.

Standard accessories include:

• YEX-CLI-206A sensor 1 pc

• User manual 1 copy

• Certificate of conformity 1 sheet

• 5-meter cable 1 pc

Optional accessories include extension cables, standard calibration solutions, installation brackets, etc. Cable length customization and other personalized needs are supported.

Yexsensor's professional technical team can provide selection consultation, installation and debugging, and full guidance on system integration to help users quickly implement chloride ion monitoring projects.

Common Questions and Answers (FAQ)

Q1: What ranges does YEX-CLI-206A support? How is the resolution?

A1: It provides two ranges: 0～3500mg/L (resolution 0.1mg/L) and 0～35000mg/L (resolution 1mg/L), meeting the needs of different concentration scenarios.

Q2: How does the sensor integrate with PLC or DCS systems?

A2: It adopts standard RS-485 Modbus RTU protocol. Data can be read by direct wiring. Yexsensor provides protocol documents and sample code, supporting mainstream industrial controllers.

Q3: What are the advantages of the patented electrode?

A3: The patented reference solution slow seepage design makes the reference system stable, significantly extends electrode life, and reduces replacement frequency and maintenance costs.

Q4: What is the calibration frequency?

A4: The sensor is calibrated before leaving the factory. Usually, only two-point calibration (zero point + slope) is performed when the measurement error is obvious. The operation is simple.

Q5: What interfering ions should be noted during use?

A5: Sulfide ions, iodide ions, bromide ions, etc. will interfere with chloride ion measurement. Please evaluate according to actual water quality when using.

Q6: What are the key precautions during installation?

A6: Use 3/4NPT submersible installation to ensure that the front end of the electrode is fully immersed in the solution. All wiring points must be waterproofed.

Q7: What are the advantages compared with traditional chloride ion detection methods?

A7: Online continuous monitoring, fast response, digital output for easy integration, no need to frequently add reagents, economical and practical, low maintenance cost.

Q8: Does Yexsensor support batch customization services?

A8: Yes. We can customize cable length, range adjustment or integration solutions. Welcome bulk users to contact us for exclusive quotes and technical support.

Yexsensor YEX-CLI-206A online chloride ion sensor has become the preferred equipment in the field of water quality chloride ion monitoring with its patented electrode technology, high-precision measurement and digital integration advantages. Yexsensor is committed to providing you with professional and reliable ion monitoring solutions to help achieve precise water quality control and process optimization.

Welcome to contact Yexsensor for the latest quotation, technical information or on-site demonstration to jointly build an efficient and intelligent water quality monitoring system.