Memosens COS81E
Technical Data
CompareOxygen
| 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, Class VI and FDA) Process seal for Ex versions: FKM (not FDA-compliant) Seals/O-rings: EPDM, FFKM (USP, Class VI and FDA) Spot cap: Stainless steel 1.4435 (AISI 316L), titanium or hastelloy Spot layer: Silicone (USP, 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 |
The Memosens COS81E digital optical dissolved oxygen sensor is the ideal choice for hygienic applications. The sensor effectively prevents light source aging, delivers stable, high-precision measured values and ensures high product quality. The COS81E is explosion-proof approved and can measure in dust explosion hazardous areas, making it particularly suitable for inert-gas blanketing anti-oxidation processes. Using Memosens 2.0 digital technology, the COS81E supports extended data storage and is the perfect basis for preventive maintenance and efficient measurement.
Advantages
The Memosens COS81E is designed in accordance with EHEDG and ASME BPE. It eliminates the risk of cross-contamination and fully complies with USP Cl. VI, FDA approval, GMP and GLP requirements.
Long uptime: the sensor can be precalibrated in the laboratory, is plug-and-play and can be replaced quickly online. No polarization time required, ready for use immediately after installation.
Reliable measuring results: a built-in reference LED compensates for aging of the measuring LED. Measured values remain accurate even after CIP/SIP and autoclaving.
Low maintenance: the electrolyte or sensitive sensor membrane of the Memosens COS81E is very easy to replace. Simply replace the sensor cap and then calibrate the sensor.
The sensor can be installed in process and fermenter applications. Results remain stable and consistent from initial laboratory trials through to batch production and laboratory applications.
The sensor is explosion-proof approved and can measure in dust explosion hazardous areas, making it particularly suitable for inert-gas blanketing anti-oxidation processes.
Supports IIoT: Memosens 2.0 supports extended data storage, saving calibration and process parameters for better trend identification, and is the perfect basis for preventive maintenance and advancing IIoT technology
Application areas
The Memosens COS81E can measure in applications with strict sterile and hygienic requirements, such as:
Fermentation processes
Drinking water production
Inert-gas blanketing anti-oxidation processes
The Memosens COS81E dissolved oxygen sensor has international explosion protection approvals, e.g. ATEX and IECEx, and can be used in hazardous areas
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Source:Endress+Hauserpublic information from the website
Case Studies
Municipal Wastewater Treatment — Wastewater Treatment Plant · Dissolved Oxygen Application Case
Project Background
Municipal Wastewater Treatment customers at the Wastewater Treatment Plant stage have long faced the challenge of insufficient accuracy in effluent quality monitoring and instruments prone to contamination causing data drift, affecting compliance discharge, placing higher demands on the stability and measurement accuracy of Dissolved Oxygen.
Solution
Based on the on-site conditions, the Ainstru technical team selected suitable Dissolved Oxygen for the customer and delivered one-stop service covering selection, installation, commissioning and tuning.
Results
- Measurement accuracy and response speed significantly improved, with stable and reliable data;
- Instruments adapt to complex Municipal Wastewater Treatment conditions, greatly reducing maintenance;
- Helping customers achieve continuous online monitoring and cost reduction, highly recognized by customers.
Food & Beverage — Food Production Line · Dissolved Oxygen Application Case
Project Background
Food & Beverage customers at the Food Production Line stage have long faced the challenge of high hygienic measurement requirements, with inline instruments needing to withstand CIP/SIP cleaning while maintaining stable accuracy, placing higher demands on the stability and measurement accuracy of Dissolved Oxygen.
Solution
Based on the on-site conditions, the Ainstru technical team selected suitable Dissolved Oxygen for the customer and delivered one-stop service covering selection, installation, commissioning and tuning.
Results
- Measurement accuracy and response speed significantly improved, with stable and reliable data;
- Instruments adapt to complex Food & Beverage conditions, greatly reducing maintenance;
- Helping customers achieve continuous online monitoring and cost reduction, highly recognized by customers.
Chemical & Pharmaceutical — Reactors and Storage Tanks · Dissolved Oxygen Application Case
Project Background
Chemical & Pharmaceutical customers at the Reactors and Storage Tanks stage have long faced the challenge of highly corrosive media and complex conditions, requiring corrosion-resistant and explosion-proof instruments, placing higher demands on the stability and measurement accuracy of Dissolved Oxygen.
Solution
Based on the on-site conditions, the Ainstru technical team selected suitable Dissolved Oxygen for the customer and delivered one-stop service covering selection, installation, commissioning and tuning.
Results
- Measurement accuracy and response speed significantly improved, with stable and reliable data;
- Instruments adapt to complex Chemical & Pharmaceutical conditions, greatly reducing maintenance;
- Helping customers achieve continuous online monitoring and cost reduction, highly recognized by customers.
Power & Energy — Power Plant Boiler and Turbine · Dissolved Oxygen Application Case
Project Background
Power & Energy customers at the Power Plant Boiler and Turbine stage have long faced the challenge of unstable measurement under high temperature and pressure, with high maintenance and downtime costs, placing higher demands on the stability and measurement accuracy of Dissolved Oxygen.
Solution
Based on the on-site conditions, the Ainstru technical team selected suitable Dissolved Oxygen for the customer and delivered one-stop service covering selection, installation, commissioning and tuning.
Results
- Measurement accuracy and response speed significantly improved, with stable and reliable data;
- Instruments adapt to complex Power & Energy conditions, greatly reducing maintenance;
- Helping customers achieve continuous online monitoring and cost reduction, highly recognized by customers.
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