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The COA451 assembly holds your DO sensor in the right position and offers simple sensor isolation.

Dissolved oxygen assembly
Cleanfit COA451

Retractable assembly for water, wastewater and utilities

COA451
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Dissolved oxygen assembly Cleanfit COA451 ©Endress+Hauser

Specs at a glance

  • Process temperature

    max. 80°C (176°F)

  • Process pressure

    For manual assembly operation : max 2bar (29psi)
    Medium pressure : max. 10bar (145psi)

Field of application

Cleanfit COA451 is a retractable assembly for all fields of dissolved oxygen measurements. It is equipped with a stop bolt, O-ring seals and a ball valve, enabling complete isolation of process and sensor compartment. This allows you to access the sensor without interrupting the process or emptying the pipe or tank. Better still, benefit from increased process and operational safety and significantly reduced maintenance effort across the whole measuring point.

Cleanfit COA451 is a retractable assembly for oxygen sensors with a diameter of 40mm in:

  • Wastewater treatment plants:
    - O2 control in the aeration basin
    - Process water treatment and monitoring

  • Water works:
    - Status monitoring of drinking water
    - Water quality monitoring in rivers, lakes or seas

  • Utilities of all industries:
    - O2 control in the biological treatment
    - Process water treatment and monitoring

  • Fish farming:
    - O2 control for optimum growth conditions

Benefits

  • One assembly for all applications: The 'one for all' principle optimizes stockholding, speeds up project handling and simplifies life cycle management.

  • Easy and safe maintenance: Sensor service and cleaning without process interruption.

  • Robust design: Process pressure up to 10 bar (145 psi), manual operation up to 2 bar (29 psi).

  • Convenient and time-saving operation: Rinse-water connection allows cleaning without removing the sensor from the process.

Predecessor

Success stories

  • Dow plant in Stade, Germany Dow plant in Stade, Germany

    Automated pH measuring point in wastewater

    The Dow plant in Stade relies on Endress+Hauser solutions for pH monitoring in the treatment of production wastewater.

  • Minera Valle Central in Chile performs online interface measurement and turbidity monitoring Minera Valle Central in Chile performs online interface measurement and turbidity monitoring

    Improved thickener operation at Minera Valle Central

    The measurement of interface in thickeners is done manually, while the turbidity measurement is done by obtaining samples sent to the laboratory. With Endress+Hauser there is an automated solution.

  • real-time monitoring of critical parameters in fermentation processes real-time monitoring of critical parameters in fermentation processes

    Advanced bioprocess control

    From time consuming sample analysis to real-time monitoring of critical parameters in fermentation processes thanks to complete solutions from hardware to development and analytical services.

  • Company site of Meta Nikel Kobalt in Türkiye Company site of Meta Nikel Kobalt in Türkiye

    The future of mining

    Automatic cleaning, calibration, and monitoring of Memosens pH sensors with the CDC90 for efficient operations in mining applications.

  • Butoniga Reservoir Croatia Butoniga Reservoir Croatia

    How Istria is quenching its thirst

    Endress+Hauser enables fast and reliable water analysis at Butoniga Reservoir, ensuring optimal layer selection, improved water quality and reduced operating costs.

  • Simple products

  • Easy to select, install and operate

Technical excellence

Simplicity

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  • Reliable, robust and low-maintenance

Technical excellence

Simplicity

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Technical excellence

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Variable

FLEX selections Technical excellence Simplicity
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Fundamental selection

Meet your basic measurement needs

Technical excellence
Simplicity
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Lean selection

Handle your core processes easily

Technical excellence
Simplicity
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Extended selection

Optimize your processes with innovative technologies

Technical excellence
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Xpert selection

Master your most challenging applications

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Variable

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