Digital optical oxygen sensor
Memosens COS81E

Memosens 2.0 hygienic sensor for the life sciences and food industries

• 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

• Measuring 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
  FDA)
  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

  0 to 60/80 °C (C-shape/U-shape)
  32 to 140/175 °F (C-shape/U-shape)
  Sterilization: max. 140 °C at 6 bar for max. 45 min
  (Max. 284 °F at 87 psi for max. 45 min)

• Process pressure

  0.02 to 13 bar abs
  (0 to 190 psi)

• Temperature sensor

  Pt1000

• 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

• Ingress protection

  IP68
  IP69

• Certificates, declarations and approvals

  Inspection certificate 3.1, EN10204
  Surface roughness test ISO4287/Ra (≤ 0,38 µm)
  Conformity to cGMP derived requirements
  ASME BPE
  US Food Contact Materials FDA CFR 21
  EU Food Contact Materials (EG) 1935/2004
  CN Food Contact Materials GB 4806
  EHEDG EL Class I