PRE722-C Digital Controller – Advanced Intelligent Solution for Industrial Online Monitoring

The PRE722-C Digital Controller is an advanced, high-performance monitoring controller designed for precise and reliable measurement across a wide range of industrial applications. Built with intelligent sensor-recognition technology and robust communication capabilities, the PRE722-C has become a preferred choice for industries that demand accuracy, stability, and ease of use. Whether used in aquaculture, wastewater treatment, chemical processes, or drinking-water monitoring, this controller provides a dependable solution for real-time measurement and system automation.

With modern process demands increasing worldwide, the PRE722-C Digital Controller offers exceptional flexibility by supporting multiple PREMS sensor types, enabling users to seamlessly integrate level, flow, turbidity, pH, dissolved oxygen, conductivity, or other water-quality parameters into a single control platform. Its durable design, intuitive interface, and strong anti-interference performance make it ideal for harsh field environments.

Key Features of the PRE722-C Digital Controller

1. Intelligent Sensor Auto-Recognition

The controller automatically identifies all compatible PREMS digital sensors, simplifying installation and reducing configuration time. This plug-and-play functionality ensures smooth setup even for non-technical users.

2. High Anti-Interference Performance

The PRE722-C uses isolation technology for both analog and digital communication outputs. This provides strong noise resistance, ensuring stable long-distance signal transmission—an essential feature for industrial plants and outdoor monitoring stations.

3. Dual Output Options: 4–20 mA and RS485 (Modbus)

With both analog and digital communication available, the controller can easily integrate with PLCs, SCADA systems, data loggers, and automation equipment. The 4–20 mA output enables compatibility with legacy systems, while RS485 Modbus ensures seamless integration in modern IoT and Industry 4.0 environments.

4. Programmable High/Low Relay Alarms

Two relay outputs allow users to activate pumps, valves, aerators, warning lights, or other external equipment. Adjustable hysteresis prevents rapid switching, protecting control hardware and extending operational lifespan.

5. User-Friendly Interface With Password Protection

The PRE722-C features a clear LCD display and intuitive menu navigation. Access levels can be password-protected to prevent unauthorized adjustments—especially useful in shared work environments.

6. Rugged & Durable Industrial Design

With an IP65 front panel and robust ABS housing, the PRE722-C Digital Controller is built to withstand humidity, dust, and harsh industrial conditions. Its long operational life makes it a dependable part of any monitoring system.

Technical Specifications

• Controller Size: 144 × 144 × 115 mm

• Weight: 0.65 kg

• Display: 95.5 × 48.5 mm LCD

• Operating Temperature: 0 ~ 55°C

• Measurement Temperature Range: 0 ~ 50°C

• Housing Material: ABS

• Protection Class: IP65 (front panel)

• Power Supply: 220 VAC or 24 VDC (optional)

• Communication: 4–20 mA & RS485 (Modbus)

• Relay Outputs: High/Low dual alarm relays

• Installation: Wall-mounted or panel-mounted

Benefits of Using the PRE722-C Digital Controller

✔ Versatile Multi-Parameter Monitoring

Compatible with various PREMS sensors, reducing the need for multiple controllers and simplifying system architecture.

✔ Improved Operational Efficiency

Automated alarms and outputs allow users to control equipment based on real-time data, optimizing process performance.

✔ Cost-Effective System Integration

Its dual communication capabilities make the PRE722-C suitable for both new installations and existing system upgrades.

✔ Enhanced Data Reliability

Electrical isolation and noise filtering ensure accurate measurements even in electrically harsh environments.

✔ Quick Installation & Low Maintenance

Plug-and-play sensor detection and intuitive menu structure reduce setup time and ongoing operational headaches.

Typical Applications

The PRE722-C Digital Controller is widely used in applications such as:

• Aquaculture: DO, pH, salinity, turbidity, and water-quality regulation

• Municipal & Industrial Wastewater Treatment

• Water Supply Plants & Drinking-Water Systems

• Power Generation Facilities

• Chemical & Pharmaceutical Processing

• Food & Beverage Production

• Environmental Monitoring Stations

Its adaptability makes it suitable for continuous 24/7 operation in critical monitoring environments.

Conclusion

The PRE722-C Digital Controller delivers a powerful combination of intelligence, durability, and flexible communication—making it an essential component for modern industrial monitoring systems. Its ability to automatically recognize sensors, provide stable outputs, and integrate into various automation networks ensures efficient and reliable operation across multiple industries