Endress+Hauser CUS71D-AA1A Turbimax CUS50D Sensor Smart Measurement

The Endress+Hauser CUS71D-AA1A Turbimax CUS50D is a state-of-the-art, two-channel sensor designed for the continuous, in-line measurement of turbidity and suspended solids concentration. Leveraging advanced light-scattering technology, it delivers unparalleled reliability in the most demanding water, wastewater, and industrial process applications. This sensor is engineered to provide operators with the critical data needed to optimize filtration, monitor clarifier performance, ensure effluent compliance, and protect downstream equipment.

Technical Specifications

Model/Part Number: CUS71D-AA1A (Sensor variant for Turbimax CUS50D platform)

Product Line: Turbimax CUS50D

Measured Parameters: Turbidity (NTU, FNU) and Suspended Solids (mg/L, g/L)

Measuring Principle: 4-beam, invariant light-scattering technology with patented 2-channel receiver system

Measuring Ranges:

Turbidity: 0.001 to 10,000 NTU (multiple auto-ranging)

Suspended Solids: 0.001 to 5,000 mg/L (application-dependent)

Accuracy: Typically ±2% of reading or ±0.005 NTU (whichever is greater)

Process Connection: DIN 11851 or ANSI/ASA clamp, other options available

Process Temperature: -10 to 85 °C (14 to 185 °F)

Process Pressure: Up to 16 bar (232 psi)

Materials in Wetted Parts: Sapphire glass, PEEK, stainless steel (1.4404 / 316L)

Communication: Integrated Memosens digital technology for data storage and plug-and-play commissioning

Outputs & Compatibility: Compatible with all Endress+Hauser transmitters (e.g., Liquiline CM44x) via Memosens; analog and digital outputs.

Key Features & Advantages

Unmatched Reliability with 4-Beam Invariant Technology

The patented system uses two light sources and two receivers. By continuously comparing both channels, the sensor automatically compensates for common interferences like coating, color, and light source aging. This guarantees stable, drift-free measurements and drastically reduces maintenance.

One Sensor, Dual Measurements

Simultaneously measure both turbidity and suspended solids concentration from a single probe. This eliminates the need for multiple instruments, reduces installation costs, and provides a more complete picture of your process.

Memosens Digital Technology

Memosens ensures perfect data integrity with contactless, inductive signal transmission. The sensor stores calibration data internally, enabling pre-calibration in the lab and tool-free, plug-and-play field replacement. This technology future-proofs your investment.

Exceptional Performance in Low Ranges

With a detection limit as low as 0.001 NTU, the CUS71D-AA1A is ideal for critical applications like filter breakthrough monitoring, condensate measurement, and final effluent compliance, where the highest sensitivity is required.

Robust, Low-Maintenance Design

Built with wear-resistant sapphire glass windows and a self-cleaning mechanical design that minimizes air bubble retention. Its rugged construction ensures long-term operation in abrasive and fouling conditions, reducing total cost of ownership.

Why Choose the Turbimax CUS50D Sensor?

This sensor is not just a measuring device; it’s a cornerstone for process optimization and regulatory compliance. Whether you are managing a drinking water plant, an industrial wastewater treatment facility, or a chemical process, the CUS71D-AA1A provides the trusted, accurate data necessary for automated control, resource efficiency, and environmental stewardship. Its diagnostic capabilities and predictive maintenance features empower teams to move from reactive to proactive operations.

Available for Immediate Integration

Enhance your process visibility and control with the industry-leading Endress+Hauser Turbimax CUS50D platform. The CUS71D-AA1A sensor is available to integrate into new installations or as an upgrade to existing monitoring points.

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