Daruifuno ASR400 ORP Sensor: High-Performance Redox Measurement with Self-Cleaning CapabilityThe Daruifuno ASR400 ORP Sensor is a state-of-the-art instrument designed for highly accurate and reliable redox potential measurement in demanding applications. Featuring a durable PPS plastic housing (Poly-Phenylene Sulfide), the ASR400 is built to withstand complex industrial environments, challenging chemical processes, and rigorous wastewater treatment.

Advanced Sensor Technology and Specifications
The ASR400 offers an extended and precise measurement range of ±2000mV. It utilizes a highly responsive platinum ring as the measuring element. The robust reference system is anchored by an Ag/AgCl reference electrode, which is protected by a double salt bridge and a KCl gel Reference System. This configuration is crucial for minimizing contamination and ensuring exceptional long-term stability in dirty or aggressive media.

Key electrical specifications confirm the sensor's precision: the Zero Position (E0) is ± 20mV at 25℃, and the Slope is certified to be greater than 95% at 25℃.

Operational Versatility and Self-Cleaning Feature

A defining feature of the ASR400 is its integrated versatility. The sensor can be optionally equipped with a cleaning joint (ASR Analog ORP Sensor). When paired with a compatible Daruifuno PH/ORP controller, users gain precise control over self-cleaning cycles, allowing for customization of the time interval and frequency of automated cleaning. This significantly reduces maintenance and ensures continuous accuracy.

The sensor maintains high performance across a range of conditions, tolerating pressures and temperatures up to 0℃ to 80℃ at 6Bar, and 80℃ to 100℃ at 4 Bar. It operates optimally within a sample flow rate velocity range of 0.5m/s≥velocity≥0.001m/s. Temperature compensation is highly flexible, supporting customized units such as PT1000, PT100, NTC10K, and others.

• Compact all-in-one design
• Large capacity reference for extended service life
• Optional cleaning connector for underwater maintenance
• Available with PTFE protective cover and self-cleaning interface
• Self-cleaning function enhances stability, accuracy, and reliability while reducing maintenance costs

Flexible Installation and Customization

The ASR400 is engineered for versatile deployment across various plant configurations. The sensor has a diameter of 35 mm, a total length (including foot guard) of 200 mm, and a 100mm insertion depth. It features 1-inch NPT threads at both ends for secure, easy mounting.

A wide array of installation methods is supported:
Sidewall Mounting: Best suited for integration into large tanks and vessels.
Top Flange Mounting: Perfect for measurements within sealed reactors.
Pipe/Flow Cell Mounting: Allows for precise in-line continuous measurement and is compatible with the flow cell installation method.
Submersible Mounting: Ideal for continuous monitoring in open tanks and channels.
Manual Retractable Holder: This option enables maintenance, cleaning, and calibration to be performed without interrupting the process flow.

The sensor is supplied with a standard 5-meter integrated cable, with options for other lengths to meet specific installation needs. The Daruifuno ASR400 offers a durable and flexible solution for reliable ORP control in Water Treatment Plants and beyond.

The ASR400 ORP sensor is a vital tool for precise ORP control and monitoring in several critical areas, including:

• Environmental Monitoring: Ensuring regulatory compliance in environmental discharge.
• Domestic Sewage and Agricultural Sewage: Monitoring and controlling treatment processes.
• Industrial Wastewater and Waste Water Treatment Plants: Essential for effluent neutralization and process optimization.
• Aquaculture: Maintaining optimal water quality for aquatic life.
• Industrial Production: Providing crucial measurement data for various manufacturing processes requiring pH control.

This combination of advanced technology, rugged design, and installation versatility positions the Daruifuno ASR400 as a premium choice for industrial and environmental ORP monitoring.