Smart Sensor for Suspended Solids and Turbidity Measurement
The Endress+Hauser Turbimax CUS51D is a digital optical sensor designed for continuous measurement of suspended solids and turbidity in demanding water applications.
Unlike traditional turbidity sensors designed mainly for clean water, the CUS51D is optimized for applications with higher solids concentrations, such as wastewater treatment processes, sludge monitoring and industrial water treatment.
It provides reliable measurement data throughout different treatment stages, helping operators optimize processes and improve operational efficiency.
Four-Beam Alternating Light Measurement Technology
The CUS51D uses a four-beam alternating light principle to achieve stable and accurate measurement.
Advantages include:
Reliable suspended solids measurement
Reduced influence from external light interference
Suitable for high turbidity applications
Improved measurement stability
Adaptable to different media characteristics
The sensor supports measurement ranges up to:
Turbidity: 0 to 4000 FNU
Suspended solids: 0 to 300 g/L (depending on medium)
Designed for Wastewater Treatment Applications
The CUS51D is widely used throughout wastewater treatment processes.
Typical applications include:
Activated sludge monitoring
Return sludge measurement
Waste activated sludge measurement
Sludge treatment monitoring
Final effluent turbidity measurement
Flocculant dosing control
By providing continuous solids measurement, the sensor helps operators optimize biological treatment and sludge management processes.
Memosens Digital Technology
The CUS51D uses Memosens digital sensor technology, providing reliable data transmission and simplified sensor management.
Key benefits include:
Digital signal transmission
High measurement data integrity
Sensor calibration data storage
Easy sensor replacement
Predictive maintenance support
Memosens technology allows sensors to be calibrated in the laboratory and quickly exchanged in the field without interrupting the process for long periods.
Self-Cleaning and Low Maintenance Design
The CUS51D is designed for continuous operation with minimal maintenance.
Features include:
Robust stainless steel construction
Self-cleaning functionality
Resistance against corrosion and moisture
Reduced manual cleaning frequency
This makes it suitable for unattended measurement points in wastewater and industrial applications.
Flexible Application with Integrated Calibration Models
The CUS51D includes multiple analytical models to adapt the sensor to different measurement tasks.
Benefits include:
One sensor for multiple applications
Simplified inventory management
Faster project configuration
Easier lifecycle management
The same sensor platform can be used for different solids measurement requirements by selecting the appropriate calibration model.
Reliable Measurement in Industrial Utilities
Beyond wastewater treatment, the CUS51D is suitable for industrial utility applications requiring continuous solids monitoring.
Typical uses include:
Process water monitoring
Primary water treatment
Sludge concentration measurement
Industrial wastewater control
It helps improve process transparency and supports automated control strategies.
Key Features
Digital Memosens suspended solids sensor
Measures suspended solids and turbidity
Four-beam alternating light measurement technology
Measuring range up to 4000 FNU and 300 g/L sludge concentration
Designed for wastewater and process water applications
Self-cleaning function for low maintenance
Robust stainless steel 316L construction
Laboratory calibration capability
Compatible with Liquiline transmitters
Suitable for unattended operation
Typical Applications
Wastewater Treatment Plants
The CUS51D is designed for measurement throughout wastewater treatment processes.
Applications include:
Aeration tank solids monitoring
Return sludge concentration measurement
Sludge treatment control
Final outlet turbidity monitoring
Sludge Treatment
Accurate solids measurement helps improve sludge handling efficiency.
Typical applications:
Thickening process monitoring
Sludge concentration control
Dewatering process optimization
Drinking Water and Process Water
The sensor can also be used in water treatment applications with higher turbidity levels.
Applications include:
Raw water monitoring
Flocculation control
Solids removal processes
Industrial Utilities
The CUS51D supports industrial water management by providing continuous solids monitoring.
Applications include:
Process water quality control
Wastewater discharge monitoring
Treatment process optimization
FAQ
What is Endress+Hauser CUS51D?
The CUS51D is a digital optical sensor designed for measuring suspended solids and turbidity in wastewater, process water and industrial utility applications.
What does CUS51D measure?
CUS51D measures:
Suspended solids concentration
Turbidity
What measurement principle does CUS51D use?
The sensor uses a four-beam alternating light measurement principle.
Is CUS51D suitable for wastewater applications?
Yes. It is specifically designed for wastewater treatment plants, sludge processes and applications with medium to high turbidity levels.
What is the difference between CUS51D and CUS52D?
CUS51D is mainly designed for suspended solids and higher turbidity applications, especially wastewater and sludge processes.
CUS52D is optimized for drinking water and process water turbidity measurement with lower turbidity ranges.
