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Digital oxygen sensor
Oxymax COS61D

Memosens optical oxygen sensor for water, wastewater and utilities

  • ©Endress+Hauser
  • ©Endress+Hauser
  • ©Endress+Hauser

Oxymax COS61D is a high-performance, digital oxygen sensor that offers fast, accurate and drift-free measurement. It supports your process with low maintenance, high availability and easy handling. The sensor's long-term stable fluorescence layer is exclusively oxygen-selective (interference-free), ensuring consistently reliable measurement. Thanks to Memosens digital technology, the Oxymax COS61D combines maximum process and data integrity, and facilitates simple lab calibration.


  • Minimum maintenance, maximum availability

  • Fast, drift-free measurement for precise aeration control and process monitoring

  • Long-term stability for increased process safety

  • Outstanding performance in all aeration processes (SBR, Anamox, etc.)

  • Chemical-free: no electrolyte handling

Field of application

Oxymax COS61D measures the dissolved oxygen concentration in:

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

  • Water works:
    - Status monitoring of drinking water (oxygen enrichment, corrosion protection, etc.)
    - 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

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Endress+Hauser Inc.
2350 Endress Place Greenwood , IN 46143 United States
Tel.: 888-363-7377
Fax: 317-535-8498
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