Memosens COS81D is a hygienic oxygen sensor for the life sciences, pharma and food industries.

Digital oxygen sensor
Memosens COS81D

Memosens optical oxygen sensor for hygienic applications in Life Sciences, Pharma and Food

COS81D

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The Memosens COS81D optical oxygen sensor is available in 220 mm length. — ...220 mm length.

The sensor is designed according to ASME BPE and EHEDG. — The sensor is designed according to ASME BPE and EHEDG allowing its use in applications with highest hygiene requirements such as fermentation, inertization or drinking water production.

Memosens COS81D can be applied in the process and in the laboratory. Providing you with 100% measuring consistency throughout your entire production.

Memosens COS81D with c-shaped sensor cap. Use this cap for oxygen measurement in fermenters. — Memosens COS81D with c-shaped tip of the sensor cap. Use this cap for oxygen measurement in liquids such as fermenter applications, to prevent the attachment of air bubbles.

Memosens COS81D with u-shaped sensor cap. Use this cap for oxygen measurement in inertization. — Memosens COS81D with u-shaped tip of the sensor cap. Use this cap for oxygen measurement in gas phases such as in inertizations, where abrasive particles could damage the cap's optical layer.

Conveniently maintain and calibrate your COS81D sensor in the laboratory with Memobase Plus CYZ71D. — Conveniently maintain and calibrate your Memosens COS81D sensor under controlled conditions in your lab with the Memobase Plus software.

Install the precalibrated sensor in your process and your measurement is instantly ready. — Install the precalibrated Memosens COS81D sensor in your process and your measurement is instantly ready for the next batch.

The Memosens COS81D optical oxygen sensor is available in 120 mm and...

Specs at a glance

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)

See all specifications

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.

Videos

The concentration of oxygen dissolved in a liquid can be measured using the amperometric or optical measuring principles. This video shows what it is about and how these measuring principles work.
Memosens converts the measured value to a digital signal and transfers it to the transmitter without a contacting connection. This video shows how Memosens optimizes process control and maintenance.

Extended selection

High-end products
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Technical excellence

Simplicity

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Simple products
Easy to select, install and operate

Technical excellence

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Standard products
Reliable, robust and low-maintenance

Technical excellence

Simplicity

What is FLEX?

High-end products
Highly functional and convenient

Technical excellence

Simplicity

What is FLEX?

Specialized products
Designed for demanding applications

Technical excellence

Simplicity

Variable

What is FLEX?

FLEX selections	Technical excellence	Simplicity
F L E X Fundamental selection Meet your basic measurement needs	Technical excellence	Simplicity
F L E X Lean selection Handle your core processes easily	Technical excellence	Simplicity
F L E X Extended selection Optimize your processes with innovative technologies	Technical excellence	Simplicity
F L E X Xpert selection Master your most challenging applications	Technical excellence	Simplicity Variable

Learn more about the FLEX selections

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