Yexsensor YEX-FUV-408 Online Full-spectrum Multi-parameter Sensor

Yexsensor YEX-FUV-408 online full-spectrum multi-parameter sensor is a professional online monitoring device developed for system integrators, water treatment engineering companies and IoT solution providers. The sensor is based on the full-spectrum absorption method and can simultaneously achieve high-precision measurement of multiple parameters such as COD, BOD, TOC, chroma, turbidity, TP, TN, ammonia nitrogen, nitrate and nitrite, meeting the continuous online needs of municipal sewage treatment plants, industrial wastewater treatment systems and surface water environmental monitoring.

In the digital upgrading process of the water treatment industry, traditional monitoring solutions that require reagents or single parameters have been unable to meet the requirements of stable operation and cost control. YEX-FUV-408 uses a xenon lamp wide-spectrum light source combined with a miniature fiber optic spectrometer, paired with advanced optical path attenuation compensation and particulate interference elimination algorithms, to provide engineering projects with accurate and stable real-time data support, helping optimize process parameters, ensure compliance with discharge standards and effectively reduce operation and maintenance costs.

Yexsensor YEX-FUV-408 Online Full-spectrum Multi-parameter Sensor Working Principle

The characteristic absorption of substances to light of specific wavelengths is the basis of spectral analysis. Yexsensor YEX-FUV-408 uses a xenon lamp as the light source, which can emit a continuous spectrum from near ultraviolet to near infrared. By integrating a miniature fiber optic spectrometer to collect complete spectral data, and using proprietary algorithms to perform real-time compensation for optical path attenuation, it effectively suppresses the interference of granular suspended solids on the measurement.

This full-spectrum absorption method does not require the addition of any chemical reagents, avoiding secondary pollution, while ensuring that the measurement results have high stability and repeatability. Even under complex water quality or high turbidity conditions, the sensor can still output reliable data, making it suitable for direct connection to SCADA, PLC or IoT platforms to achieve continuous process monitoring.

Yexsensor YEX-FUV-408 Online Full-spectrum Multi-parameter Sensor Product Features

YEX-FUV-408 has multiple practical advantages at the engineering application level:

• No reagents required, no secondary pollution, significantly reducing operating costs and meeting environmental protection requirements

• Supports uninterrupted online measurement, providing multi-parameter data in real time and reducing manual sampling frequency

• Integrates multiple indicators such as COD, BOD, TOC, chroma, turbidity, TP, TN, ammonia nitrogen, nitrate and nitrite, simplifying on-site instrument configuration

• Built-in automatic turbidity interference compensation algorithm to improve measurement stability in complex water environments

• Small drift, fast response speed, high measurement accuracy, and stable long-term operation performance

• Maintenance-free design, long service life and low overall cost of ownership

• Standard RS-485 interface, Modbus/RTU protocol, easy to seamlessly integrate with existing control systems

• Low power consumption design (0.2W@12V), strong anti-interference ability, suitable for industrial site environments

• 316L stainless steel shell, IP68 protection level, excellent corrosion resistance

These features make YEX-FUV-408 a preferred monitoring device with high reliability and low integration difficulty in water treatment projects.

Yexsensor YEX-FUV-408 Online Full-spectrum Multi-parameter Sensor Technical Parameters

Measurement Parameters and Specifications

General Technical Specifications

• Measurement Principle: Full-spectrum absorption method

• Calibration Method: Spectral calibration

• Output Method: RS-485 (Modbus/RTU protocol)

• Power Supply Voltage: 12～24 VDC

• Power Consumption: 0.2 W @ 12 V

• Operating Temperature: 0～45℃

• Operating Pressure: < 0.1 MPa

• Storage Temperature: -5～65℃

• Protection Level: IP68

• Installation Method: Immersion installation

• Cable Length: Standard 5 meters (customization supported)

• Shell Material: 316L stainless steel

Yexsensor YEX-FUV-408 Online Full-spectrum Multi-parameter Sensor Installation and Electrical Connection

Installation Guide

YEX-FUV-408 adopts immersion installation. To ensure measurement accuracy, it is recommended to immerse the sensor at least 30 cm below the lowest water level (considering water level fluctuations), with the measurement window facing the water flow direction. During installation, avoid sensor collision with pool walls or other facilities due to water flow impact. In occasions with high flow velocity, add fixed brackets to ensure the sensor is horizontal and firm.

It is recommended to add protective sleeves outside the cable to prevent mechanical damage under long-term immersion or exposed environments. The maximum installation depth shall not exceed 2 meters.

Electrical Connection

The sensor is equipped with a 4-core twisted shielded cable, and the wire sequence is defined as follows:

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

• Black wire: Ground wire (GND)

• Blue wire: RS-485 A

• White wire: RS-485 B

Before wiring, please carefully check the sequence to avoid equipment damage caused by wiring errors. All wiring points must be waterproofed. The cable should have certain anti-corrosion ability to adapt to long-term immersion or humid industrial environments.

Yexsensor YEX-FUV-408 Online Full-spectrum Multi-parameter Sensor Maintenance and Care

YEX-FUV-408 is designed with low maintenance characteristics in mind, and daily operation is simple and efficient.

Maintenance Schedule Recommendations

• Spectral Calibration: Perform regularly according to project or competent department requirements

• Self-cleaning Brush Maintenance: Return to factory for inspection and maintenance every 18 months

• Dynamic Seal Replacement: It is recommended to return to factory for replacement after 18 months of continuous use

The actual maintenance frequency can be flexibly adjusted according to the on-site water quality conditions.

Maintenance Methods

1. Outer surface cleaning: Rinse with tap water. For stubborn dirt, add a small amount of neutral detergent and wipe with a soft cloth.

2. Cable inspection: Ensure that the cable is not excessively pulled or tightened.

3. Measurement window and cleaning brush: Regularly check for dirt or damage.

4. Optical and electronic components do not require user disassembly and maintenance.

Precautions

• Avoid exposing the sensor to strong sunlight for a long time

• Do not touch the optical window directly with your hands

• During measurement and calibration, ensure that no air bubbles adhere to the measurement window

• Avoid applying any mechanical stress or scratches to the sensor

Yexsensor YEX-FUV-408 Online Full-spectrum Multi-parameter Sensor Application Scenarios

Yexsensor YEX-FUV-408 is widely used in various engineering projects that require continuous and multi-parameter online water quality monitoring.

• Municipal Sewage Treatment Plants
         Can be deployed at key process nodes such as inlet, biological reaction tank, and outlet to monitor organic load, denitrification and phosphorus removal effects in real time, provide reliable data support for process adjustment and effluent compliance, and help optimize energy consumption.

• Industrial Wastewater Treatment Systems
         Suitable for high-concentration organic wastewater or nitrogen and phosphorus-containing wastewater monitoring in chemical, pharmaceutical, food processing, textile printing and dyeing industries. The sensor can be directly connected to existing DCS or PLC systems to achieve process control and automatic discharge monitoring, significantly reducing the cost of manual laboratory testing.

• Surface Water Environmental Monitoring
         As the core equipment of rivers, lakes or water source monitoring stations, it operates stably for a long time in natural water bodies, providing continuous data of key indicators such as COD, ammonia nitrogen, and total nitrogen, supporting water environment quality assessment and pollution warning.

• Industrial Process Water Reuse and Circulation Systems
         In circulating cooling water, reclaimed water reuse or boiler feed water systems, monitor TOC, turbidity and organic matter indicators to ensure stable system operation and extend equipment service life.

With multi-parameter integration, reagent-free design and Modbus protocol compatibility, YEX-FUV-408 can effectively simplify system architecture, reduce overall project integration difficulty and long-term operation and maintenance costs.

Frequently Asked Questions (FAQ)

Q1. How many parameters can YEX-FUV-408 measure simultaneously?

A1: The sensor can simultaneously output a total of 10 parameters: COD, BOD, TOC, chroma, turbidity, TP, TN, ammonia nitrogen, nitrate and nitrite, effectively reducing the number of on-site instruments.

Q2. Is the sensor calibration operation complicated?

A2: Calibration is very simple: fully immerse the sensor in deionized water, ensure there are no air bubbles, and then send the spectral calibration command to complete it. No standard solution is required.

Q3. What are the requirements for installation depth and position?

A3: It is recommended to immerse more than 30 cm below the lowest water level, with the measurement window facing the water flow direction. The maximum depth shall not exceed 2 meters. It is recommended to fix it firmly and install cable protection sleeves.

Q4. Is the output protocol compatible with mainstream control systems?

A4: It adopts the standard RS-485 Modbus/RTU protocol and can be seamlessly connected with PLC, DCS, SCADA or IoT gateways.

Q5. Is the daily maintenance workload large?

A5: The maintenance workload is low. Routine cleaning only requires tap water rinsing, and the self-cleaning brush is returned to the factory for maintenance every 18 months.

Q6. What are the power consumption and power supply requirements of the sensor?

A6: It supports wide voltage power supply of 12～24 VDC, with power consumption of only 0.2 W@12 V, suitable for various low-power on-site applications.

Q7. Is it suitable for high-turbidity or water bodies containing suspended solids?

A7: Yes, the sensor has a built-in automatic turbidity interference compensation algorithm, which can effectively eliminate the influence of particulate matter and is suitable for complex water quality environments.

Q8. What about product warranty and after-sales service?

A8: The product has undergone strict inspection and 72-hour aging test before leaving the factory. The manufacturer provides technical support, cable customization and factory maintenance services for system integrators.

Summary

Yexsensor YEX-FUV-408 online full-spectrum multi-parameter sensor takes advanced full-spectrum absorption technology as the core, combined with high integration, low maintenance requirements and industrial-grade reliability, providing an efficient and stable online monitoring solution for water treatment engineering projects. Its multi-parameter simultaneous measurement capability, Modbus/RTU communication protocol and reagent-free design effectively reduce system integration difficulty and long-term operating costs, and have become an important choice for many engineering companies in the fields of municipal sewage treatment, industrial wastewater treatment and environmental monitoring.

For detailed product quotations, technical specification sheets, selection guidance or project application cases, please feel free to contact the Yexsensor professional team. We will provide targeted configuration solutions and technical support according to your specific working conditions and system requirements to help your project be implemented smoothly and operate stably for a long time.