Flexible Retractable Assembly for Process Measurement

The Endress+Hauser CPA871 is a retractable process assembly designed for installing liquid analysis sensors in pipelines, tanks and reactors.

It provides a safe and efficient solution for applications where sensors require regular inspection, cleaning, calibration or replacement.

The CPA871 can be used with compatible pH, ORP and dissolved oxygen sensors, providing a flexible installation platform for various liquid analysis applications.

Safe Sensor Maintenance Without Process Shutdown

One of the main advantages of the CPA871 is its retractable mechanism.

The sensor can be safely removed from the process while the system remains in operation, reducing downtime and improving maintenance efficiency.

Benefits include:

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  Faster sensor replacement
  
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  Reduced process interruption
  
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  Safer maintenance procedures
  
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  Improved plant availability
  

Designed for Demanding Industrial Applications

The CPA871 is suitable for applications where reliable sensor installation and easy maintenance are required.

Typical installation environments include:

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  Pipelines
  
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  Reaction vessels
  
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  Storage tanks
  
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  Process reactors
  

The assembly is designed to withstand demanding industrial conditions while maintaining accurate sensor positioning.

Hygienic Design for Food and Pharmaceutical Applications

Depending on configuration, the CPA871 can be equipped with hygienic process connections and materials suitable for applications requiring strict cleanliness standards.

It is suitable for industries where reliable measurement and easy cleaning are important.

Applications include:

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  Food and beverage production
  
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  Pharmaceutical manufacturing
  
• 
  Biotechnology processes
  

Key Features

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  Retractable process assembly for liquid analysis sensors
  
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  Suitable for pH, ORP and dissolved oxygen sensors
  
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  Allows sensor maintenance without process interruption
  
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  Safe insertion and removal mechanism
  
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  Flexible process connections
  
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  Suitable for pipelines, tanks and reactors
  
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  Hygienic versions available
  
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  Robust design for industrial applications
  
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  Compatible with Endress+Hauser sensor systems
  
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  Reduces maintenance time and process downtime
  

Technical Specifications

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  Application: Installation of pH, ORP and oxygen sensors
  
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  Assembly type: Retractable process assembly
  
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  Installation location: Pipes, tanks and reactors
  
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  Sensor compatibility: 12 mm diameter sensors
  
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  Wetted materials: Stainless steel and suitable process materials depending on configuration
  
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  Process pressure: Up to 16 bar
  
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  Process temperature: Up to 140 °C
  
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  Process connections: Multiple options available
  
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  Cleaning compatibility: Suitable for manual or automated cleaning systems depending on configuration
  

Typical Applications

Water and Wastewater Treatment

The CPA871 is used for installing pH and oxygen sensors in:

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  Aeration tanks
  
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  Treatment basins
  
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  Process water systems
  
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  Industrial wastewater plants
  

It allows easy sensor maintenance while keeping measurement points available.

Chemical Industry

Suitable for chemical processes requiring:

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  Continuous pH monitoring
  
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  Reliable sensor positioning
  
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  Safe sensor maintenance
  

Food and Beverage Industry

Used in hygienic process applications where sensor cleaning and replacement are important.

Typical applications include:

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  Fermentation processes
  
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  Production monitoring
  
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  Cleaning process control
  

Pharmaceutical and Biotechnology

The CPA871 supports reliable sensor installation in processes requiring:

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  Hygienic design
  
• 
  Repeatable measurement conditions
  
• 
  Easy maintenance procedures
  

FAQ

What is Endress+Hauser CPA871?

The CPA871 is a retractable process assembly designed for installing pH, ORP and oxygen sensors in industrial liquid applications.

What sensors can be installed with CPA871?

CPA871 is designed for compatible Endress+Hauser liquid analysis sensors, including pH, ORP and dissolved oxygen sensors.

Can the sensor be removed while the process is running?

Yes. The retractable design allows sensor removal and maintenance without interrupting the process when operated according to safety requirements.

Where is CPA871 used?

It is commonly used in water treatment, chemical, food, pharmaceutical and biotechnology applications.

What is the advantage of a retractable assembly?

A retractable assembly allows easier sensor cleaning, calibration and replacement, helping reduce downtime and maintenance effort.