Compact Turbidity Measurement for Hygienic Phase Separation

The Endress+Hauser CUD33 is an optical turbidity device developed specifically for food and beverage applications where fast and reliable phase separation is required.

During production processes, accurately detecting the transition between different media is essential to maximize product recovery and reduce waste. The CUD33 identifies changes in turbidity caused by different products or cleaning liquids, allowing automated process control.

Typical examples include:

• 
  Milk/water separation in dairy processing
  
• 
  Yeast/water separation in breweries
  
• 
  CIP cleaning process monitoring
  

NIR Backscattering Measurement Technology

The CUD33 uses an optical scattered light principle with NIR backscattering technology to detect turbidity changes in liquid media.

Advantages include:

• 
  Fast response to product changes
  
• 
  Reliable phase boundary detection
  
• 
  Stable measurement in hygienic processes
  
• 
  Reduced product loss during changeover
  

The measuring range covers 0 to 100% turbidity, making it suitable for various separation applications.

Optimized for Food and Beverage Applications

The CUD33 is designed for hygienic production environments where cleanliness and product safety are critical.

Typical applications include:

Dairy Processing

The device helps detect:

• 
  Milk/water separation
  
• 
  Product recovery points
  
• 
  CIP transition points
  

By accurately identifying phase changes, manufacturers can improve product yield and reduce unnecessary disposal.

Brewery Applications

The CUD33 supports brewery process monitoring, especially:

• 
  Yeast/water separation
  
• 
  Yeast recovery processes
  
• 
  Cleaning cycle monitoring
  

Reliable turbidity detection helps improve production efficiency and resource utilization.

Hygienic Design and Easy Installation

The CUD33 features a compact hygienic construction suitable for direct installation in process piping.

Key design advantages:

• 
  Stainless steel 1.4435 (316L) housing
  
• 
  Surface roughness Ra < 0.37 μm
  
• 
  Compact installation dimensions
  
• 
  No replaceable sealing materials
  
• 
  Reduced maintenance requirements
  

Available process connections include:

• 
  G 1/2" threaded connection
  
• 
  Tri-Clamp connection
  
• 
  Varivent connection
  

Maintenance-Friendly Design

The CUD33 is designed for simple operation with minimal maintenance requirements.

Benefits include:

• 
  Compact sensor design
  
• 
  Easy integration into existing systems
  
• 
  Reliable operation during CIP processes
  
• 
  Annual ball lens cleaning only
  

The innovative lens design helps prevent measurement interference caused by air bubbles, improving measurement reliability.

Simple Integration into Control Systems

The CUD33 can be directly connected to plant automation systems.

Available outputs:

• 
  4...20 mA
  
• 
  4...20 mA with IO-Link
  

No additional configuration is required for basic operation, allowing fast commissioning in production environments.

Key Features

• 
  Compact turbidity device for hygienic processes
  
• 
  NIR backscattering measurement technology
  
• 
  Designed for food and beverage applications
  
• 
  Fast phase separation detection
  
• 
  Ideal for dairy and brewery processes
  
• 
  Supports CIP process optimization
  
• 
  Stainless steel 316L hygienic construction
  
• 
  Tri-Clamp, Varivent and threaded connections
  
• 
  4...20 mA and IO-Link communication
  
• 
  IP69 protection rating
  
• 
  EHEDG and 3-A hygienic certified design
  

Typical Applications

Dairy Industry

Applications:

• 
  Milk/water phase separation
  
• 
  Product recovery optimization
  
• 
  CIP monitoring
  

The CUD33 helps dairy producers maximize product yield by accurately detecting product transitions.

Brewing Industry

Applications:

• 
  Yeast recovery monitoring
  
• 
  Yeast/water separation
  
• 
  Process changeover control
  

CIP Cleaning Processes

The CUD33 supports efficient cleaning management by identifying transitions between:

• 
  Product and cleaning liquid
  
• 
  Different process liquids
  
• 
  Final rinse stages
  

This helps reduce water consumption and improve cleaning efficiency.

FAQ

What is Endress+Hauser CUD33?

The CUD33 is a compact optical turbidity device designed for phase separation detection in food and beverage applications.

What does CUD33 measure?

The CUD33 measures turbidity and detects differences between liquid media during phase separation processes.

What measurement principle does CUD33 use?

The CUD33 uses optical scattered light measurement with NIR backscattering technology.

Where is CUD33 mainly used?

It is mainly used in dairy processing, breweries and hygienic food production processes requiring reliable phase separation detection.

Is CUD33 suitable for CIP processes?

Yes. The CUD33 is designed to support CIP process optimization and product changeover monitoring.