Endress+hauser COS81E Digital optical oxygen sensor Memosens
- Hygienic optical luminescence
- Hazardous area certified
- Memosens 2.0 digital
- Low maintenance, stable
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Description
Endress+hauser COS81E Digital optical oxygen sensor Memosens
The Endress+Hauser Memosens COS81E is a state-of-the-art optical oxygen sensor, meticulously designed for highly demanding hygienic applications. Its advanced measuring system prevents the ageing of the optical spot, ensuring precise and long-term stable measurements crucial for maintaining high product quality in sensitive industries. The COS81E’s adherence to EHEDG and ASME BPE standards, along with its approvals for hazardous and dust-explosive areas, makes it exceptionally versatile for applications like fermentation and inertization, offering unparalleled reliability and safety.
Fermentation: Precision in Bioprocesses
In the critical field of fermentation, particularly within the pharmaceutical and biotechnology sectors, precise control of dissolved oxygen is paramount for optimal microbial growth and product yield. The Memosens COS81E excels in these environments, providing stable, interference-free measurements that are unaffected by aging or sterilization cycles. Its hygienic design, compliance with USP Class VI and FDA standards, and ability to maintain measuring consistency from lab-scale trials to full-scale production ensure that sterile conditions are upheld and product quality is consistently high.
Drinking Water: Sterility and Quality Assurance
For drinking water production facilities, ensuring sterility and maintaining optimal water quality are non-negotiable. The Memosens COS81E is ideally suited for these applications, offering reliable optical oxygen measurement that adheres to the strictest hygiene standards, including EHEDG and USP Class VI compliance. Its robust design and digital Memosens 2.0 technology provide extended data storage for better process insights and predictive maintenance, guaranteeing precise measurements that support the safety and quality of potable water supplies from production to distribution.
Inertization: Safety in Hazardous Atmospheres
The Memosens COS81E is perfectly engineered for inertization processes, a critical safety measure in industries where explosive atmospheres can occur. With international explosion protection approvals such as ATEX and IECEx for Zone 0, 1, 2, 20, 21, and 22, as well as CSA C/US approvals, this sensor can be safely deployed in hazardous and dust-explosive areas. It provides reliable oxygen concentration monitoring, essential for maintaining an inert atmosphere and preventing combustion, thereby ensuring the highest level of safety in potentially dangerous operational environments.
Food Industry: Quality Control and Compliance
In the food industry, maintaining product quality and ensuring compliance with stringent regulations are essential. The Memosens COS81E’s hygienic design and precise optical measurement capabilities make it an excellent choice for quality control applications, such as monitoring oxygen levels in food processing. Its ability to withstand repeated sterilization cycles (CIP/SIP and autoclaving) and its compliance with FDA and GMP requirements guarantee that it integrates seamlessly into food production lines without compromising sterility or product integrity, ensuring safe and high-quality food products.
Memosens 2.0: Future-Proof Digital Technology
Leveraging Memosens 2.0 digital technology, the COS81E offers significant advantages for modern industrial processes and the burgeoning Industrial Internet of Things (IIoT). The sensor’s ability to store extensive calibration and process data directly within its head provides an immediate basis for trend identification, predictive maintenance, and enhanced operational efficiency. This plug-and-play functionality, combined with immediate measurement readiness after sensor swapping and calibration in the lab, dramatically reduces maintenance effort and increases process uptime, paving the way for smarter, more connected operations.
Reduced Maintenance and Enhanced Reliability
The design of the Memosens COS81E significantly reduces maintenance effort and enhances overall reliability. Unlike traditional sensors, it eliminates the need for handling sensitive electrolytes or membranes. Instead, users can simply exchange the sensor cap and perform a straightforward calibration. The integrated reference LED actively compensates for the ageing of the measuring LED, ensuring precise and stable measured values even after demanding sterilization cycles or autoclaving. This robust design guarantees a high process up-time and consistent performance.
Specifications
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Measuring principle
Optical oxygen measurement
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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
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Measuring range
0.004 to 30 mg/l
0.05 to 330 %SAT
0.1 to 700 hPa -
Measuring principle
Principle of luminescence quenching
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Design
Optical system, stainless steel
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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
1 to 140 °C
(32 to 284 °F) -
Process pressure
0.02 to 13 bar abs
(0 to 190 psi) -
Temperature sensor
Pt1000
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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
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Ingress protection
IP68
IP69 -
Additional certifications
Additional certifications











