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Product picture of: Memosens COS81E

Memosens COS81E

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  • Measuring principle

    Optical oxygen measurement

  • Application

    • Oxygen control in fermenters, e.g. in the pharmaceutical or biotechnology sectors
    • Monitoring of explosive atmospheres with an oxygen concentration of ≥ 2% Vol
    • Quality control in the food industry

  • Installation

    Standard process connection Pg 13.5
    Installation in standard pH assemblies possible

  • Characteristic

    Hygienic, optical sensor for stable oxygen measurement over multiple sterilization cycles

  • Measurement range

    0.004 to 30 mg/l
    0.05 to 330 %SAT
    0.1 to 700 hPa

  • Measuring principle

    Principle of luminescence quenching

  • Design

    Optical system, stainless steel

  • Material

    Sensor shaft: Stainless steel 1.4435 (AISI 316L)
    Process seal: FKM (USP<87>, <88> Class VI and FDA)
    Process seal for Ex versions: FKM (not FDA-compliant)
    Seals/O-rings: EPDM, FFKM (USP<87>, <88> Class VI and
    Spot cap: Stainless steel 1.4435 (AISI 316L), titanium or hastelloy
    Spot layer: Silicone (USP<87>, <88> Class VI and FDA)

  • Dimension

    Diameter: 12 mm (0.47 inch)
    Shaft length: 120, 160, 220, 320 and 420 mm
    (4.7 , 6.3 , 8.7 , 12.6 and 16.5 inch)

  • Process temperature

    1 to 140 °C
    (32 to 284 °F)

  • Process pressure

    0.02 to 13 bar abs
    (0 to 190 psi)

  • Temperature sensor


  • Ex certification

    With ATEX, IECEx, NEPSI, Japan and INMETRO approvals for use in
    hazardous areas Zone 0, Zone 1 and Zone 2 and furthermore Zone 20, Zone 21 and Zone 22 in dust hazardous areas.
    With CSA C/US approval for use in
    hazardous areas Class I Division 1 and furthermore Class II Division 1 in dust hazardous areas.

  • Connection

    Inductive, digital connection head with Memosens 2.0 technology

  • Ingres protection


  • Additional certifications

    Additional certifications

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