YEX-MPS-400 Online Multi-Parameter Self-Cleaning Water Quality Sensor – Integrated Real-Time Monitoring with Automatic Cleaning for Reliable Long-Term Deployment

Discover the YEX-MPS-400 Online Multi-Parameter Self-Cleaning Sensor from Yexsensor, an advanced integrated digital water quality monitoring solution that simultaneously measures up to 8 parameters including dissolved oxygen (DO), COD, pH, ORP, conductivity/salinity, ammonia nitrogen, turbidity, and temperature. Equipped with an automatic cleaning device, RS-485 Modbus/RTU output, IP68 protection, quick-plug waterproof connectors, and a protective guard with slots, this sensor ensures accurate, low-maintenance operation in challenging environments. Ideal for wastewater treatment, aquaculture, surface water monitoring, and industrial processes.

Yexsensor provides robust, user-friendly water quality instruments designed for continuous online deployment.

The YEX-MPS-400 combines multiple high-performance digital sensors into one compact probe with built-in self-cleaning technology, significantly reducing biofouling, manual intervention, and overall operational costs while delivering stable, real-time data.

Why Choose the YEX-MPS-400 Multi-Parameter Self-Cleaning Sensor?

Traditional multi-parameter monitoring often requires frequent manual cleaning due to microbial growth, sediment, and biofouling, leading to measurement drift, increased maintenance labor, and higher long-term costs. The YEX-MPS-400 solves these challenges with an integrated automatic cleaning brush system that can be programmed for cleaning intervals and cycles, effectively removing surface contaminants and maintaining sensor accuracy over extended periods.

Key benefits include:

• Up to 8 parameters in one probe: Flexible combination of DO, COD, pH, ORP, conductivity/salinity, ammonia nitrogen (NH4-N), turbidity, and temperature.

• Automatic self-cleaning: Programmable cleaning reduces biofouling and maintenance frequency, ideal for remote or harsh water bodies.

• Digital intelligence: RS-485 Modbus/RTU protocol for easy integration with PLC, DCS, SCADA, IoT platforms, or data loggers.

• Robust construction: POM and 316L stainless steel materials, IP68 rating, protective slotted guard to shield sensors from large debris while allowing free water flow.

• Quick installation and maintenance: Fast plug-and-play waterproof connectors simplify field replacement or reconfiguration.

• Low power and reliable: 5W @ 12VDC consumption, wide operating conditions (0–40°C, ≤0.2 MPa), and individual sensor calibration data stored internally.

This solution-oriented design delivers high data reliability with minimal downtime, supporting regulatory compliance, process optimization, and environmental protection.

Detailed Technical Specifications and Optional Sensor Modules

The YEX-MPS-400 main unit supports modular digital sensors. Below are key specifications for common configurations:

Each sensor module features independent calibration storage, allowing easy field replacement without full system recalibration.

Application Scenarios for Multi-Parameter Online Monitoring

The YEX-MPS-400 excels in environments requiring comprehensive, continuous water quality data with minimal maintenance.

Wastewater Treatment Plants

Monitor DO, COD, ammonia nitrogen, pH, ORP, and turbidity across influent, aeration tanks, anoxic zones, and effluent. Real-time multi-parameter insights optimize aeration energy use, biological nutrient removal, chemical dosing, and compliance with discharge standards. The self-cleaning function handles high solids and biofouling common in sewage.

Aquaculture and Fish Farming

Maintain optimal conditions in ponds, recirculating systems (RAS), or offshore cages by tracking DO (critical for fish health), ammonia nitrogen (toxic waste), pH, temperature, salinity, and turbidity. Automatic cleaning ensures reliable data during long deployments, reducing fish stress, improving feed efficiency, and preventing disease outbreaks.

Surface Water and Environmental Monitoring

Deploy in rivers, lakes, reservoirs, or coastal areas for comprehensive profiling of pollution levels, algal blooms, and ecosystem health. The protective guard and self-cleaning system support extended unattended operation in remote locations, feeding data to telemetry or cloud platforms for trend analysis and early warnings.

Industrial Process Water

In food & beverage, chemical, pharmaceutical, or power plants, monitor conductivity, COD, pH, ORP, and turbidity for quality control, process optimization, and wastewater reuse. The robust design withstands varying pressures and temperatures.

Drinking Water Sources and Treatment

Track raw water quality parameters to guide coagulation, filtration, and disinfection processes while ensuring finished water safety.

The Modbus/RTU output enables seamless integration into existing SCADA or IoT systems, supporting centralized dashboards, alarms, and automated control loops. Combining multiple YEX-MPS-400 units or pairing with single-parameter sensors creates scalable monitoring networks.

Installation and Electrical Connection Guidelines

Installation

• Use immersion (submersible) mounting for tanks, channels, or open water bodies.

• Position the probe vertically or at a slight angle to ensure proper water flow through the protective guard slots.

• The slotted protective cover shields internal sensors from large floating debris and organisms without compromising measurement accuracy.

• Ensure the automatic cleaning brush has unobstructed movement.

Electrical Connection

• Red wire: Power (12 VDC)

• Black wire: Ground (GND)

• Blue wire: 485A

• White wire: 485B

Carefully verify wiring before powering on. For long-term submersion (including seawater), apply waterproof sealing to all connections and use corrosion-resistant cable extensions if needed. The quick-plug waterproof connectors facilitate fast sensor swaps or maintenance.

Maintenance and Best Practices

Recommended Maintenance Schedule

• Visual inspection and surface cleaning: As needed based on site conditions (typically reduced thanks to automatic brush).

• Sensor calibration: Periodically per individual module guidelines (single or two-point using appropriate standard solutions).

• Check for physical damage to shell, cable, or protective guard.

Maintenance Steps

• Rinse external surfaces with tap water; use a soft cloth or mild household detergent for stubborn deposits.

• Avoid abrasive materials that could damage sensor membranes.

• For individual sensors, follow specific calibration procedures detailed in their respective manuals.

• Inspect the automatic cleaning mechanism regularly to confirm brush operation.

Troubleshooting Common Issues

• No communication: Verify power, wiring, and Modbus settings; contact support if circuit issues suspected.

• Unstable or drifting readings: Clean sensor surfaces and perform recalibration.

• The system logs calibration data internally for traceability.

Warranty periods vary by module (e.g., 1 year for most sensors, 6 months for ammonia nitrogen, 3 years for the main probe body), with strict factory quality controls including 72-hour aging tests.

Integration into Smart Monitoring Systems

The YEX-MPS-400 integrates effortlessly into modern digital ecosystems. Use RS-485 daisy-chaining for multiple probes on a single bus. Data can feed directly into PLCs, industrial controllers, paperless recorders, or cloud-based IoT platforms for remote access, historical trending, predictive maintenance alerts, and automated responses (e.g., adjusting aeration based on DO and ammonia levels).

Low power consumption makes it suitable for solar-powered remote stations.

Frequently Asked Questions (FAQ)

Q1. How many parameters can the YEX-MPS-400 measure simultaneously?

Up to 8 parameters (including temperature) by combining optional digital sensor modules such as DO, COD, pH, ORP, conductivity, ammonia nitrogen, and turbidity.

Q2. How does the automatic cleaning system work?

The built-in brush mechanism can be programmed with cleaning intervals and cycle counts via Modbus commands, effectively removing biofouling and debris to maintain measurement accuracy with reduced manual intervention.

Q3. Is the sensor suitable for seawater or high-salinity applications?

Yes, with appropriate module selection (e.g., salinity/conductivity sensor) and corrosion-resistant materials. The self-cleaning feature helps in biologically active marine environments.

Q4. What communication protocol does it support?

Standard RS-485 with Modbus/RTU, allowing direct connection to most industrial control systems and data acquisition platforms.

Q5. How often does manual cleaning or calibration become necessary?

The automatic cleaning significantly extends intervals. Calibration frequency depends on the specific parameter and site conditions—refer to individual sensor manuals for guidelines.

Q6. Can individual sensor modules be replaced without replacing the entire probe?

Yes. Each digital sensor uses quick-plug waterproof connectors, and calibration data is stored within the module for easy field exchange.

Q7. What power supply is required?

12 VDC ±5%, with low consumption of 5 W @ 12 V, suitable for both mains and battery/solar-powered installations.

Q8. What warranty and support does Yexsensor offer?

Modules carry 6–12 months warranty (ammonia nitrogen 6 months, main probe 3 years), backed by rigorous quality testing. After-sales service covers manufacturing defects; spare parts and technical support are readily available. Improper use damage is excluded.

Summary and Next Steps

The YEX-MPS-400 Online Multi-Parameter Self-Cleaning Water Quality Sensor from Yexsensor offers a professional, reliable, and highly efficient solution for comprehensive water quality monitoring. Its integrated design, automatic cleaning technology, flexible parameter selection, and robust digital communication make it an ideal choice for reducing maintenance costs, ensuring data accuracy, and supporting sustainable water management across wastewater, aquaculture, environmental, and industrial applications.

Ready to upgrade your water quality monitoring capabilities with minimal maintenance and maximum reliability? Contact the Yexsensor team today for customized configurations, technical consultations, demonstration units, or complete system integration support. Explore our full range of single and multi-parameter sensors to create a tailored, future-proof monitoring network that meets your exact operational needs.