Yexsensor YEX-TPS-206 Online Transparency Sensor Product Overview

YEXsensor YEX-TPS-206 online transparency sensor (model: YEX-TPS-206) is a professional-grade water quality optical sensor launched by Yexsensor. It adopts the visible light absorption method measurement principle. When the sensor is immersed in the liquid to be measured, it measures the absorbance of suspended substances in the water to a specific wavelength beam, and then accurately obtains the water transparency value through specific curve fitting and calculation, while outputting the water temperature parameter.

The sensor has multiple outstanding advantages: pollution-free, economical and environmentally friendly; compact size and convenient installation; small drift, fast response and accurate measurement; good long-term monitoring data stability; built-in cleaning brush that effectively prevents impurities and microorganisms from attaching, greatly reducing maintenance frequency; long service life and low usage cost. Built-in Pt1000 temperature sensor realizes automatic temperature compensation to ensure reliable data in environments with temperature changes.

The sensor 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 additional transmitters, simplifying system integration and reducing overall project costs. Range 50～2000 mm, resolution 1 mm, accuracy ±10%, response time T90＜30s, minimum detection limit 50 mm, meeting the needs of most online water transparency monitoring.

The housing combines POM and 316L stainless steel materials, which is lightweight and corrosion-resistant. It supports submersible installation. The standard cable length is 5 meters (customizable), and the connector is M16-5 core waterproof male connector. The IP68 protection rating ensures the sensor can be immersed in water for long-term use. The low power consumption design (0.2W@12V) combined with 12～24V DC wide voltage power supply is particularly suitable for remote sites or harsh environment deployment.

Yexsensor strictly implements quality control standards. Every YEX-TPS-206 sensor undergoes 72-hour aging tests and stability verification to ensure zero defects upon delivery, providing professional and reliable solutions for users' water quality transparency monitoring.

YEXsensor YEX-TPS-206 Online Transparency Sensor Core Technical Advantages

Visible Light Absorption Method Measurement Principle

By accurately measuring the absorbance of suspended substances in water to a specific wavelength of light and combining curve fitting algorithms, accurate calculation of transparency is achieved. The measurement is not affected by chemical reagents, pollution-free and more environmentally friendly.

Self-Cleaning Function Design

Built-in cleaning brush effectively prevents impurities and microorganisms from attaching to the measurement window, reducing the frequency of manual cleaning, especially suitable for long-term online monitoring scenarios.

Multi-Parameter Simultaneous Output

Simultaneously outputs transparency and water temperature parameters, with built-in Pt1000 automatic temperature compensation to improve overall measurement accuracy.

Digital Intelligent Integration

RS-485 Modbus RTU protocol output with strong anti-interference ability, supporting long-distance transmission and multi-device networking. The two-point calibration method is simple to operate and convenient to maintain.

Rugged and Low Maintenance

The IP68 protection rating combined with high-quality housing material adapts to working environments of 0～60℃ and ≤0.2MPa. The maintenance-free characteristics are significant, with long service life and low comprehensive usage cost.

These technical advantages make the YEXsensor YEX-TPS-206 an ideal choice for upgrading traditional manual transparency measurement or optical sensors, helping users achieve continuous and automated monitoring of water transparency.

YEXsensor YEX-TPS-206 Online Transparency Sensor Technical Specifications

YEXsensor YEX-TPS-206 Online Transparency Sensor Wide Application Scenarios

The YEXsensor YEX-TPS-206 online transparency sensor is widely suitable for various scenarios requiring real-time monitoring of water transparency. Its self-cleaning function and digital integration features can effectively solve problems such as low frequency of manual sampling, data lag, and difficult maintenance.

• Environmental Water Quality Monitoring
  In surface water monitoring of rivers, lakes, reservoirs, etc., real-time transparency changes are mastered to assess water turbidity and suspended solids content, providing continuous data support for environmental protection departments.

• Municipal Water Supply and Drinking Water Treatment
  Monitoring at water intake, sedimentation tanks, factory water of water treatment plants, and secondary water supply systems, helping optimize coagulation, sedimentation, and filtration processes to ensure that water supply transparency meets standards.

• Sewage Treatment and Reclaimed Water Reuse
  Monitoring at inlet, aeration tanks, outlets and reclaimed water reuse systems of sewage treatment plants to verify treatment effects and prevent effluent turbidity from affecting subsequent reuse.

• Industrial Water Treatment Systems
  In process water and wastewater treatment in chemical, papermaking, textile, food and beverage industries, monitoring transparency changes to assist in judging water quality status and equipment operation status.

• Other Professional Fields
  Including aquaculture water monitoring, landscape water maintenance, laboratory water quality verification, etc. Whether for continuous online monitoring or process control, the YEX-TPS-206 can provide stable and reliable transparency data.

Yexsensor helps users build intelligent water quality monitoring networks through this sensor, improving operational efficiency and ensuring water quality safety and environmental compliance.

YEXsensor YEX-TPS-206 Online Transparency Sensor Installation and Electrical Connection

Installation Requirements

The YEX-TPS-206 adopts submersible installation method and is recommended for hanging installation. During installation, pay attention to:

• Avoid the sensor colliding with walls or other facilities due to water flow. When the water flow is fast, please fix the sensor.

• The installation depth should not exceed 2 meters from the water surface. Considering water level fluctuations, the sensor should be submerged at least 30 cm below the possible lowest water level.

• Place it in a position without air bubbles in the water.

• The sensor should be placed horizontally as required and securely fixed with cable protective sleeves.

Electrical Connection

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

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

• Black wire: Ground (GND)

• Blue wire: 485A

• White wire: 485B

Before powering on, carefully check the wiring sequence to avoid reverse connection causing equipment damage. All wiring must be waterproof and anti-corrosion treated. The cable should have certain corrosion resistance. The sensor connector is M16-5 core waterproof male connector to ensure reliable connection.

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 calibration.

YEXsensor YEX-TPS-206 Online Transparency Sensor Maintenance and Calibration Guide

Maintenance Schedule Recommendations

Maintenance Methods

1. Sensor outer surface: Rinse with tap water. For stubborn dirt, add a small amount of household detergent and wipe with a damp soft cloth.

2. Measurement window and cleaning brush: Regularly check whether the measurement window is dirty and whether the cleaning brush is working normally or damaged.

3. Cable inspection: Ensure the cable is not damaged, not overly tight, and wiring points are not immersed in water.

Precautions

• Avoid exposing the sensor to direct sunlight

• Do not touch the measurement area directly with hands

• Avoid air bubbles attaching to the surface during measurement and calibration

• Avoid applying any mechanical stress (pressure, scratches, etc.) to the sensor

• There are no user-maintainable parts inside the sensor. For deep maintenance, please contact the manufacturer.

Calibration Operation (Two-point Calibration)

1. First calibration point: Use deionized water, place the sensor vertically so that the liquid surface completely covers the measurement area. Wait 3～5 minutes until the value stabilizes, then perform the first point calibration (prioritize temperature calibration).

2. Second calibration point: Place the sensor in a standard solution with specific transparency (50～500 mm). Wait 3～5 minutes until the value stabilizes, then perform the second point calibration.

During calibration, the liquid must completely cover the measurement area. Calibrate temperature first, then transparency. For detailed instructions, please refer to the product appendix or contact Yexsensor technical support.

Quality Assurance and Service Support

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

Standard accessories include:

• 1 × YEX-TPS-206 sensor

• 1 × User manual

• 1 × Certificate of conformity

• 1 × 5-meter cable

Optional accessories include extension cables, standard transparency solutions, cable protective sleeves, etc. Cable length customization and other personalized needs are supported.

Yexsensor professional technical team can provide full support for model selection guidance, installation and commissioning, and system integration.

Common Questions and Answers (FAQ)

Q1: What is the measurement principle of the YEX-TPS-206 transparency sensor?

A1: Based on the visible light absorption method, it measures the absorbance of suspended substances in water to a specific wavelength of light, calculates transparency through curve fitting, and simultaneously outputs water temperature.

Q2: Can the built-in cleaning brush achieve complete maintenance-free operation?

A2: The built-in cleaning brush can significantly reduce the frequency of manual cleaning, but it is still recommended to regularly check the status of the cleaning brush and return it to the factory for inspection and maintenance every 18 months.

Q3: What water depth is the sensor suitable for installation?

A3: The installation depth should not exceed 2 meters from the water surface, and it needs to be submerged at least 30 cm below the lowest water level. Ensure the measurement window is in a bubble-free position and placed horizontally.

Q4: How to perform two-point calibration?

A4: The first point uses deionized water, and the second point uses a 50～500 mm standard transparency solution. During calibration, calibrate temperature first, then transparency. The liquid must completely cover the measurement area.

Q5: What should be done if the measurement value is unstable?

A5: First check whether the measurement window is contaminated by attachments and whether the cleaning brush is working normally, then clean or calibrate. If the problem persists, please contact technical support.

Q6: What are the advantages compared with traditional manual transparency measurement?

A6: Realizes online continuous monitoring, real-time data, automatic cleaning, built-in temperature compensation, digital output for easy integration, greatly reducing labor costs and data lag.

Q7: What is the operating temperature range of the sensor?

A7: Operating temperature 0～60℃, storage temperature -5～65℃, suitable for most water monitoring environments.

Q8: Does Yexsensor support batch customization services?

A8: Yes. We can customize cable length, installation accessories or integration solutions according to requirements. Bulk users are welcome to contact us for exclusive quotes and technical support.

The YEXsensor YEX-TPS-206 online transparency sensor has become the ideal choice in the field of water transparency monitoring with the visible light absorption method, self-cleaning brush design and digital integration advantages. Yexsensor is committed to providing you with professional and reliable water quality monitoring solutions to help achieve intelligent water environment management.

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