AL3020(TUR) Turbidity/Suspended Solids Online Analyzer: Dual-Channel Industrial Monitoring Solution

In engineering projects such as sewage treatment, industrial wastewater processing, sludge management, and circulating cooling water systems, turbidity and suspended solids (SS) concentration are core parameters for evaluating treatment effectiveness, controlling processes, and ensuring discharge compliance. The Nexisense AL3020(TUR) Turbidity/Suspended Solids Online Analyzer is specifically developed for system integrators, IoT solution providers, and engineering contractors. It supports simultaneous dual-channel access to digital electrodes, integrating real-time measurement, auto-calibration, diagnostics, data logging, and industrial communication to provide a reliable hardware foundation for stable water treatment operations.

Product Overview

The Nexisense AL3020(TUR) is a highly integrated dual-channel analyzer capable of connecting two digital turbidity, suspended solids, or sludge concentration electrodes simultaneously. This allows for synchronous multi-parameter monitoring and output. The instrument features a rugged die-cast aluminum alloy shell with an IP66 protection rating, ensuring durability in humid, corrosive, and dusty industrial environments.

The 3.5-inch color touch screen offers a clear and intuitive HMI for onsite parameter configuration, calibration, historical data queries, and system self-diagnosis. The hardware interface is extensively equipped with 3 programmable relays, 2 opto-isolated 4-20mA analog outputs, and 1 isolated RS485 communication interface (supporting Modbus RTU). It also supports USB data export and firmware upgrades. An optional 4G communication module is available to meet remote monitoring and cloud platform data access requirements.

Designed with integration in mind, the analyzer can interface directly with PLCs, DCS, edge computing gateways, or IoT platforms, helping engineering teams simplify wiring, reduce cabinet space, and improve overall system reliability.

Core Functions & Technical Features

Dual-Channel Synchronous Measurement Design
   The AL3020(TUR) supports two independent digital electrodes working at the same time. This allows for monitoring different sampling points or different stages within a single process. For example, in a sewage plant, it can monitor aeration tank outlet turbidity and secondary clarifier effluent suspended solids simultaneously. In sludge dewatering systems, it can monitor influent and dewatered sludge cake concentration to achieve precise process control. The built-in temperature compensation mechanism effectively reduces the impact of temperature fluctuations on measurement results. The dual-channel architecture significantly reduces the number of required instruments, optimizing integration costs and installation space.

Industrial-Grade Protection & Anti-Interference
   The die-cast aluminum shell and IP66 rating allow the instrument to operate reliably outdoors or in high-humidity/corrosive environments. Both the 4-20mA outputs and the RS485 interface utilize optoelectronic isolation to suppress industrial electromagnetic interference, ensuring stable signal transmission.

Rich Interfaces & Flexible Communication

• 3 SPST Relay Outputs: Supports high alarm, low alarm, and timer modes to directly link with dosing pumps, sludge valves, or alarm devices.

• 2 Isolated 4-20mA Outputs: Can correspond to different channels or parameters for seamless analog interfacing with host systems.

• Isolated RS485 + Modbus RTU: Facilitates multi-instrument networking and communication with mainstream PLCs, RTUs, and IoT gateways.

• USB Interface: Supports historical data export and firmware upgrades, convenient for data analysis and maintenance.

• Optional 4G Module: Enables remote data upload, device status monitoring, and alarm push notifications, ideal for distributed or unmanned sites.

Technical Specifications

Typical Application Scenarios

• Sewage Treatment Plants: Monitoring turbidity/SS at influent, aeration, secondary clarifier, and effluent stages to optimize process adjustment.

• Industrial Wastewater: Real-time processing effect monitoring for chemical, dyeing, paper, and food industries.

• Sludge Management: Monitoring concentration during thickening, dewatering, and digestion to guide equipment operation.

• Circulating Cooling Water: Preventing pipe blockage and equipment scaling caused by high suspended solids.

• Environmental Remediation: Online turbidity monitoring for surface water and rainwater storage facilities.

Integration Advantages & Engineering Value

1. Simplified System Architecture: A single dual-channel meter replaces multiple units, reducing wiring points and cabinet space requirements.

2. Enhanced Operational Reliability: IP66 protection and isolated designs minimize environment-induced failures; touch screen and USB port facilitate maintenance.

3. Remote Management Support: Via RS485 Modbus and optional 4G, teams can achieve centralized monitoring, remote diagnosis, and alarm handling.

4. Data Traceability: Built-in storage and USB export simplify project acceptance, maintenance logging, and environmental audits.

   
   

Frequently Asked Questions (FAQ)

Q1: Does the AL3020(TUR) support monitoring turbidity and SS simultaneously?
   A1: Yes. The dual-channel design allows for flexible configuration, such as one channel for turbidity and the other for SS. Both channels can have independent ranges, alarm values, and output signals.

Q2: How is the measurement stability in high-turbidity or high-SS conditions?
   A2: The instrument uses digital electrodes combined with temperature compensation algorithms to minimize errors. It is recommended to select the appropriate electrode range for your specific conditions and perform regular calibration.

Q3: How can the relay output link with existing dosing or discharge systems?
   A3: The 3 relays support high, low, and timer modes with adjustable thresholds and hysteresis. These can be connected to pumps, valves, or PLC digital inputs to achieve closed-loop automatic control.

Q4: How do I integrate the AL3020(TUR) into an existing SCADA or IoT platform?
   A4: Use the isolated RS485 interface and standard Modbus RTU protocol. Nexisense provides a full register map for rapid integration with mainstream PLCs and gateways.

Q5: Is onsite calibration and maintenance difficult?
   A5: No. The 3.5-inch color touch screen provides graphical calibration guidance. The USB port allows for easy data export and firmware updates, while built-in diagnostics show electrode health in real-time.

Q6: Is it suitable for outdoor or low-temperature deployment?
   A6: With an operating range of -20℃ to 60℃ and an IP66-rated aluminum shell, it is well-suited for most outdoor and semi-outdoor industrial installation scenarios.

Summary

The Nexisense AL3020(TUR) Turbidity/Suspended Solids Online Analyzer provides a high-efficiency, reliable solution for online monitoring through its dual-channel architecture, industrial-grade protection, and standardized interfaces. It optimizes multi-parameter water quality monitoring deployments and supports the full integration path from field control to cloud management. For more technical data or project selection support, please contact the Nexisense team.