Analog pH sensor suitable for Chemical wastewater

The Daruifuno ASP400 pH sensor stands as a robust solution specifically designed for dependable and accurate pH monitoring in the most aggressive industrial settings.1 Its superior engineering ensures reliable operation across crucial sectors, including chemical processing, municipal and industrial wastewater treatment, large-scale industrial production, and critical environmental monitoring initiatives. This rugged, plastic-bodied sensor is the preferred instrument for challenging applications like measuring domestic sewage, agricultural runoff, industrial effluent, and managing aquaculture systems.

Precision Measurement Through Advanced Components
The foundation of the ASP400's reliability is its highly specialized design. It utilizes an acid and alkali resistant glass membrane capable of maintaining high accuracy throughout the entire 0 to 14 pH range. Long-term stability in contaminated samples is achieved via its sophisticated reference system: an Ag/AgCl reference electrode coupled with a protective double salt bridge utilizing a KCl gel fill. This configuration effectively resists poisoning and minimizes junction fouling. The primary measuring material, a combination of Glass and Porous PTFE membrane, is encapsulated in a durable PPS (Polyphenylene Sulfide) housing, guaranteeing exceptional chemical resistance.

Rigorous quality standards define its performance: the sensor exhibits a Zero Position (E_) of  ±0.25pH at 25℃ and a high Slope percentage exceeding 95% at 25℃ , confirming highly accurate and responsive signal output.

Engineered for Endurance and Automated Maintenance

The ASP400 is built to operate under demanding physical conditions, sustaining measurements in temperatures from 0℃ up to 80℃ at 6Bar and handling brief excursions to 100℃ at 4Bar. To achieve peak performance, the recommended sample flow rate should be maintained between a minimum of 0.001m/s and a maximum of 0.5m/s. For precise temperature compensation, the sensor offers flexibility with customizable support for various units, including PT1000, PT100, and NTC10K.

A key benefit of the ASP400 is its seamless integration with automated cleaning systems through an optional cleaning connector.3 When integrated with a Daruifuno controller, users gain precise command over the cleaning time interval and cleaning frequency. This automated self-cleaning capability is vital for reducing manual upkeep, guaranteeing continuous operation, and preventing measurement drift in heavily fouled process streams.

This sensor is an essential component for any facility demanding high-quality, continuous pH control and monitoring.

• 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

Versatile Installation and CustomizationThe ASP400 boasts a highly adaptable design, facilitating integration into almost any measurement setup. The sensor body has a 35 mm diameter, a total length (including foot guard) of 200 mm, and an insertion depth of 100 mm. It features 1-inch NPT threads at both ends for secure mounting.
The sensor supports a variety of installation methods:
Sidewall Mounting: Ideal for large tanks and vessels.
Top Flange Mounting: Perfect for sealed reactors.
Pipe/Flow Cell Mounting: For accurate in-line measurements and flow cell installation method.
Submersible Mounting: Suitable for open tanks and channels.Manual Retractable Holder: This option enables maintenance and calibration without interrupting the process.

The sensor comes standard with a 5-meter integrated wire, with other lengths available for customization to meet specific site requirements. For robust and versatile pH monitoring in water treatment plants and beyond, the Daruifuno ASP400 is the ultimate solution.

The ASP400 pH sensor is a vital tool for precise pH 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 ASP400 as a premium choice for industrial and environmental pH monitoring.