Specs at a glance
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Measurement range
0.004 to 30 mg/l
0.05 to 330 %SAT
0.1 to 700 hPa -
Process temperature
0 to 140 °C
(32 to 284 °F) -
Process pressure
0.02 to 13 bar abs
(0 to 190 psi)
Field of application
Memosens COS81D is the ideal oxygen sensor for hygienic applications such as fermentation and inertization. Its precise, long-term stable measurements and its permanent self-monitoring ensure the most reliable measured values to help meet your desired product quality and optimize product yield. Memosens COS81D is not the latest Memosens generation. To get information on the new Memosens COS81E sensor with extended functionality, click here.
Memosens COS81D measures oxygen in applications with high demands to sterility and hygiene such as:
Fermentation
Inertization
Drinking water production
With its international explosion protection approvals, such as ATEX and IECEx, the Memosens COS81D oxygen sensor is suitable for hazardous area use.
A pharma certificate of compliance with sensor serial number specified is available.
Benefits
Hygienic design according to EHEDG and ASME BPE (incl. USP class VI and FDA compliance) avoids cross-contamination and fulfills all GMP and GLP requirements.
The sensor can be used in process applications as well as benchtop fermenters. Providing you with 100% measuring consistency from the first lab trials to the final scaled-up process and your process lab.
More process up-time than ever before thanks to sensor exchange within seconds: precalibrate the sensor in your lab and then swap it into your process with plug & play. It does not need polarization time and is immediately ready to measure.
A built-in reference LED compensates the ageing of the measuring LED. This ensures reliable measured values throughout your entire batch production.
Reduce your maintenance effort: Memosens COS81D does not have a difficult-to-handle electrolyte or sensitive membrane. Just exchange the sensor cap, perform a calibration and you are done.
Memosens COS81D stores important sensor and process data in its intelligent head. The Memobase Plus CYZ71D sensor management software can use all this data to document the complete sensor lifetime offering full traceability with minimal paperwork.
Suitable for CIP/SIP and autoclaving and approved for hazardous area use.
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Success stories
Most downloaded
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Operating Instruction (BA)
Memosens COS81D
English version - 08/2020
Hygienic, optical sensor for measuring oxygen
EN 11/08/202030/04/201814/09/201730/09/2015Language:
English
Version:
11/08/2020
File size:
2 MB
File name:
BA01448CEN_0420.pdf
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Short Instruction (KA)
Memosens COS81D
Finnish version - 07/2020
Memosens-teknologialla varustettu optinen anturi liuonneen hapen mittaukseen
EN 28/07/202030/04/201831/08/201731/10/2016Language:
Finnish
Version:
28/07/2020
File size:
627.3 KB
File name:
KA01273CFI_0420.pdf
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57 documents
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Technical Information (TI)
Memosens COS81D
Hygienic, optical sensor for measuring oxygen
EN 28/07/202014/09/201731/01/2015Language:
English
Version:
28/07/2020
File size:
1.4 MB
File name:
TI01201CEN_0320.pdf
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Operating Instruction (BA)
Memosens COS81D
Hygienic, optical sensor for measuring oxygen
EN 11/08/202030/04/201814/09/201730/09/2015Language:
English
Version:
11/08/2020
File size:
2 MB
File name:
BA01448CEN_0420.pdf
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Short Instruction (KA)
Memosens COS81D
Optical sensor for the measurement of dissolved oxygen with Memosens technology
EN 28/07/202030/04/201831/08/201731/10/2016Language:
English
Version:
28/07/2020
File size:
628.6 KB
File name:
KA01273CEN_0420.pdf
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Installation Instructions (EA)
Kit COV81
For the maintenance of COS81D/E sensors
EN 14/12/2022Language:
English
Version:
14/12/2022
File size:
925.5 KB
File name:
EA01460CEN_0122-00.pdf
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Installation Instructions (EA)
COV81 Installation Instructions
Maintenance kit for COS81D
EN 21/09/201730/11/2016Language:
English
Version:
21/09/2017
File size:
234 KB
File name:
EA01189CA2_0217.pdf
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Special Documentation (SD)
Hygienic applications
Equipment for liquid analysis
EN 30/04/2021Language:
English
Version:
30/04/2021
File size:
515.3 KB
File name:
SD02751CEN_0121.pdf
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Competence Brochure (CP)
For the love of quality water
Fresh ideas for waterworks, distribution networks, surface waters and industrial plants.
Language:
English
Version:
17/06/2019
File size:
3.2 MB
File name:
CP01335CEN_0119_Competence in water.pdf
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Competence Brochure (CP)
Aus Freude an gutem Wasser
Frische Ideen für Wasserwerke, Verteilernetze,Oberflächenwasser und Industrieanlagen
Language:
German
Version:
17/06/2020
File size:
3.2 MB
File name:
CP01335CDE_0119_Kompetenz in Wasser.pdf
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Case Study (CS)
Case study on the use of Memosens COS81D for dissolved oxygen measurement in a gold mine
Case study on the use of Memosens COS81D for dissolved oxygen measurement in a gold mine
Language:
English
Version:
13/06/2019
File size:
2.5 MB
File name:
CS01558CEN_0119_Greenfields Mill.pdf
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Case Study (CS)
Sauerstoffmessung in einer Inertisierungsanlage
Sauerstoffmessung in einer Inertisierungsanlage: COS81D erhöht Prozesssicherheit und senkt Kosten
Language:
German
Version:
04/03/2020
File size:
1.4 MB
File name:
CS01631CDE_COS81D_Proviron.pdf
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Case Study (CS)
Mesure d’oxygène dans une installation d’inertage
Memosens COS81D augmente la sécurité des process et réduit les coûts
Language:
French
Version:
04/03/2020
File size:
1.3 MB
File name:
CS01631CFR-0120-Proviron.pdf
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Case Study (CS)
Reduced maintenance effort, enhanced saftey in gold mine
Reduced maintenance effort, enhanced saftey: Memosens CPS47D measures pH value in cyanide leaching
Language:
English
Version:
15/04/2020
File size:
1.3 MB
File name:
CS01638CEN_CPS47D_Gold leaching.pdf
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Case Study (CS)
Case study über den Einsatz von Memosens COS81D zur Messung von gelöstem Sauerstoff in einer Goldmine
Case study über den Einsatz von Memosens COS81D zur Messung von gelöstem Sauerstoff in einer Goldmine
Language:
German
Version:
13/06/2019
File size:
2.5 MB
File name:
CS01558CDE_0119_Greenfields Mill.pdf
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Case Study (CS)
Un effort de maintenance réduit, une sécurité accrue
Memosens CPS47D dansle lessivage du cyanure dans une mine d’or
Language:
French
Version:
15/04/2020
File size:
1.5 MB
File name:
CS01638CFR-0120-Gold leaching.pdf
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Case Study (CS)
Real time monitoring of water quality in aquaculture systems
CSIRO utilises Netilion Water Networks Insight (NWNI) to gain complete visibility of process changes in their aquaculture researchfacility. The turnkey cloud-based solution allows for real-time monitoring of water quality parameters DO, pH, temperature and salinity.
Language:
English
Version:
15/07/2021
File size:
330.4 KB
File name:
CS01706S36EN_01.21_Real time monitoring of water quality in aquaculture systems - Case study.pdf
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Case Study (CS)
Oxygen measurement in an inertisation plant
Oxygen measurement in an inertisation plant: Memosens COS81D increases process safety and reduces costs
Language:
English
Version:
04/03/2020
File size:
2 MB
File name:
CS01631CEN_COS81D_inertisation plant_Proviron.pdf
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Innovation (IN)
Oxygen measurement in fermenters and bioreactors
Memosens COS81D for guaranteed quality and yield
Language:
English
Version:
10/08/2017
File size:
1.2 MB
File name:
IN01111CEN_0117_COS81D.pdf
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Innovation (IN)
Mesure de l'oxygène dans les fermenteurs et les bioréacteurs
Memosens COS81D pour une qualité et un rendement garantis
Language:
French
Version:
10/08/2017
File size:
1 MB
File name:
IN01111CFR_0117_BD.pdf
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Innovation (IN)
Sauerstoffmessung in Fermentern und Bioreaktoren
Sichern Sie Qualität undAusbeute mit dem Memosens COS81D
Language:
German
Version:
10/08/2017
File size:
1.2 MB
File name:
IN01111CDE_0117_COS81D.pdf
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White paper (WP)
Whitepaper: Reproduzierbare Messwerte vom Labor bis zum Prozess
Whitepaper über digitale pH- und DO-Sensoren in der Biotechnologiebranche
Language:
German
Version:
29/05/2019
File size:
269.1 KB
File name:
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