Endress+Hauser Turbimax CUS50D-AA2BA4A1 Inline Turbidity & Suspended Solids Sensor

Endress+Hauser CUS50D-AA2BA4A1 Turbimax CUS50D Turbidity and suspended solids sensor

The Endress+Hauser Turbimax CUS50D-AA2BA4A1 is an advanced inline sensor for continuous, real-time monitoring of turbidity and suspended solids concentration in liquids. Designed for demanding industrial applications, it delivers exceptional reliability in water and wastewater treatment, beverage production, chemical processing, and power generation. The sensor utilizes a robust optical measurement principle, providing stable and maintenance-free operation even in harsh environments with fouling or coating tendencies.

Technical Specifications

Model: CUS50D-AA2BA4A1 (specific variant with defined connection and output options)

Measurement Principles: 4-beam, spatially filtered scattered light and transmitted light

Measured Variables: Turbidity (FNU, NTU) and Suspended Solids Concentration (mg/l, g/l, %)

Measurement Ranges:

Turbidity: 0.001 to 10,000 FNU (selectable ranges)

Suspended Solids: 0.001 to 100 g/l (dependent on application)

Accuracy: Better than ±2% of reading or ±0.005 FNU (whichever is greater)

Process Conditions:

Pressure: Up to 10 bar (145 psi)

Temperature: -20 to 80°C (-4 to 176°F)

Mounting: Immersion, flow-through, or bypass installation

Outputs: (Dependent on AA2BA4A1 coding) Typically includes two 4-20 mA analog outputs, pulse/frequency output, and status relays.

Communications: HART®, PROFIBUS DP/PA, or Modbus RS485 (configurable)

Sensor Body: Stainless steel 1.4571 (316Ti) or other alloys

Window Material: Sapphire or glass, highly resistant to abrasion

Power Supply: Typically 24 V DC

Protection Class: IP68 / NEMA 6P

Certifications: ATEX, IECEx, FM, CSA for hazardous areas; CE, UKCA

Key Features & Advantages

Unmatched Reliability with 4-Beam Technology

The patented 4-beam alternating light method compensates for window fouling, coating, and color changes. This "Cleaning Control" function ensures long-term stability and reduces maintenance frequency, delivering trustworthy data even when the sensor lens is partially soiled.

Dual-Parameter Measurement from One Sensor

Simultaneously measure both turbidity and suspended solids concentration with a single device, eliminating the need for separate instruments and reducing installation and capital costs.

Robust Design for Harsh Environments

Constructed with high-grade stainless steel and scratch-resistant sapphire windows, the CUS50D is built to withstand aggressive chemicals, high pressures, and abrasive media. Its IP68 rating ensures reliable performance in immersion and wash-down areas.

Intelligent Diagnostics and Easy Integration

Integrated "Heartbeat Technology" provides continuous self-monitoring, indicating sensor health and required maintenance. Simple integration into control systems is enabled via standard analog outputs and digital fieldbus protocols like HART® and PROFIBUS.

Low Maintenance & High Cost Efficiency

The self-cleaning optical design and lack of moving parts minimize maintenance interventions. Its high accuracy prevents process deviations, optimizes chemical dosing (e.g., flocculants), and ensures compliance with environmental discharge limits, offering a rapid return on investment.

Why Choose the Turbimax CUS50D Sensor?

The Endress+Hauser CUS50D-AA2BA4A1 sets the industry standard for inline turbidity monitoring. It is not just a sensor but a complete measurement solution that guarantees process reliability, ensures product quality, and protects downstream equipment. Whether for controlling filter backwash cycles, monitoring clarifier efficiency, or ensuring final effluent quality, this sensor provides the critical data needed for automated process control and regulatory reporting.

Optimize your process control and ensure water quality with the proven performance of Endress+Hauser.

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