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Digital oxygen sensor Memosens COL37E

Agile Memosens 2.0 oxygen sensor for laboratory measurements and random sampling in the field

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Digital oxygen sensor Memosens COL37E

Agile Memosens 2.0 oxygen sensor for laboratory measurements and random sampling in the field

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Benefits

  • Flow-free C-shaped optical cap eliminates interference of air bubbles
  • Easy handling thanks to optical sensor technology without electrolyte and polarisation time
  • Long lifetime of the robust optical spot for stable measurements
  • Memosens technology with true plug and play and conclusive traceability
  • Easy cleaning due to optical measurement principle and seamless design
  • Temperature compensation and registration with the integrated temperature sensor
  • Supports the requirements of quality management with tamper-proof stored information such as serial number or calibration history

Integrated technologies

Memosens technology
Manufacturer's warranty

Engineered for confidence

Our instruments are designed for long‑lasting performance, precise measurement, and dependable operation in demanding industrial environments. Each product includes a standard manufacturer’s warranty that reflects our commitment to quality and to the trust you place in our solutions.

Should a warranty case occur, the device will be assessed and the applicable remedy will be provided in line with the warranty terms – helping ensure a reliable and efficient resolution and supporting continued operation of your measurement point.

Request for extended warranty

If you require extended warranty coverage, simply contact your local Endress+Hauser representative. Our experts will advise you on the available options to match your application and risk profile, helping you protect your investment, reduce unexpected repair costs, and ensure reliable long‑term operation beyond the manufacturer's warranty period.

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Warranty terms apply

The manufacturer's warranty and extended warranty are subject to specific conditions. For full details, please refer to the locally applicable General Terms and Conditions (GTC), which can be found on the respective country page of our website.

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Right‑first‑time commissioning, worldwide

Endress+Hauser’s qualified service engineers ensure your measurement devices are commissioned right the first time, delivering application‑aligned accuracy, regulatory compliance, and operational confidence from startup onwards, anywhere in the world.

Remote support you can trust wherever you operate

With Endress+Hauser Smart Support, you benefit from faster issue resolution, higher uptime, reliable global expertise across the entire product lifecycle – and lasting peace of mind.

Committed to long‑term, sustainable performance

With deep field expertise, harmonized processes, and continuous monitoring, we accompany you with comprehensive service offerings – from initial start‑up through instrumentation maintenance to process optimization – as a true lifetime partner delivering improved outcomes.

For additional information, please contact your local Endress+Hauser representative.

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Technology
Memosens technology

Memosens 2.0: Cutting-edge sensor technology reloaded

Make life easier, increase process safety and stay connected with Memosens 2.0 digital technology.

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Product information

Oxygen sensor for spot sampling and lab measurement with Memosens technology for traceability
Memosens COL37E digital oxygen sensor
Specifications
Measuring / Application task Oxygen
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Description

The optical oxygen sensor Memosens COL37E allows for easy handling and maintenance. It allows simple adjustments to enhance the oxygen measurement and has a very fast response time. With the Memosens 2.0 technology operators also benefit from true plug and play. The sensor is agile in all environments and allows quick checking of oxygen values in aeration tanks, fish farms and surface water.

Field of application

Memosens COL37E is suited for:​​

  • Check of on-line measuring loops
  • Analysis of grab samples (on-site as well as in the laboratory)
  • Measurement at process points where regular checks are recommended​

In the following applications:

  • Surface water
  • Wastewater
  • Process water
Benefits
  • Flow-free C-shaped optical cap eliminates interference of air bubbles
  • Easy handling thanks to optical sensor technology without electrolyte and polarisation time
  • Long lifetime of the robust optical spot for stable measurements
  • Memosens technology with true plug and play and conclusive traceability
  • Easy cleaning due to optical measurement principle and seamless design
  • Temperature compensation and registration with the integrated temperature sensor
  • Supports the requirements of quality management with tamper-proof stored information such as serial number or calibration history
Downloads
Most downloaded
Technical Information (TI)
Memosens COL37E Agile, optical oxygen sensor for laboratory measurements and random
sampling in the field
English version - 02/2022
Download
Operating Instruction (BA)
Memosens COL37E Agile, optical oxygen sensor for laboratory measurements and random
sampling in the field
English version - 02/2022
Download
Installation Instructions (EA)
Kit for Memosens COL37E For the oxygen sensor COL37E
English version - 05/2022
Download
The CAD Drawings will be available after the configuration.
All downloads
16 Downloads
Technical Information (TI)
Most downloaded
Memosens COL37E Agile, optical oxygen sensor for laboratory measurements and random
sampling in the field
English version - 02/2022
Download
Operating Instruction (BA)
Most downloaded
Memosens COL37E Agile, optical oxygen sensor for laboratory measurements and random
sampling in the field
English version - 02/2022
Download
Installation Instructions (EA)
Kit for Memosens COL37E For the oxygen sensor COL37E
English version - 05/2022
Download
Competence Brochure (CP)
Memosens Laboratory Portfolio Make it easy and give me values I can trust
English version - 01/2026
Download
Competence Brochure (CP)
Gamme Memosens pour laboratoire Donnez-moi des valeurs fiables en toute simplicité
French version - 10/2023
Download
Competence Brochure (CP)
Memosens Laborportfolio Einfache Messung und verlässliche Werte
German version - 02/2023
Download
Innovation (IN)
Liquiline Mobile CML18および高性能ラボ用センサ 取扱いが容易で信頼性の高い値を提供
Japanese version - 03/2023
Download
AI (Application note)
Two is better than one Random sample measurements
leave nothing to chance
English version - 04/2025
Download
AI (Application note)
Doppelt hält besser Durch Stichprobenmessungen
nichts mehr dem Zufall überlassen
German version - 04/2025
Download
Manufacturer Declaration
Product family: Memosens Product root: COL37E-
Declaration number: HE_01645_02.25
Manufacturer specification: RoHS
Additional information: China-RoHS
English version - 08/2025
Download
Manufacturer Declaration
Product family: Memosens Product root: COL37E-
Declaration number: HE_01625_01.22
Manufacturer specification: RoHS
English version - 05/2022
Download
EU Declaration
Product family: Memosens Product root: COL37E-
Declaration number: EU_01001_01.22
English version - 02/2022
Download
EU Declaration
Product family: CeraGel, CeraLiquid, Ceramax, ConduMax H, ConduMax W, InduMax H, InduMax P, Liquiline, Memosens, Messkabel, Orbi Pac, OrbiPore, OrbiSint, OxyMax H, OxyMax W, TopHit Product root: CLS15D-, CLS16D-, CLS21D-, CLS50D-, CLS54D-, CLS82D-,
CML18-, COS21D-, COS22D-, COS51D-, COS81D-, CPF82D-, CPL51E-
,
CPS11D-, CPS12D-, CPS16D-, CPS171D-, CPS31D-, CPS341D-, CPS41D-,
CPS42D-, CPS441D-, CPS471D-, CPS47D-, CPS491D-, CPS71D-,
CPS72D-,
CPS77D-, CPS91D-, CPS92D-, CPS96D-, CPS97D-, CYK10-, CYK20-
Declaration number: EC_00828_02.20
English version - 02/2022
Download
UK Conformity Assessed
Product family: Memosens Product root: COL37E-
Declaration number: UK_00483_01.22
English version - 02/2022
Download
Components sheet
Zero-point gel COY8 SF Zero-point gel COY8
English version - 08/2026
Download
Components sheet
Maintenance kit for COL37E SF Maintenance kit for COL37E
English version - 08/2026
Download

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maintenance kit for COL37E

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Order code 71549958

Zero-point gel COY8

Order code COY8-
Spare parts & accessories
Oxygen sensor for spot sampling and lab measurement with Memosens technology for traceability
Memosens COL37E digital oxygen sensor

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Memosens COL37E digital oxygen sensor
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Spare parts and accessories

further parts
further parts

maintenance kit for COL37E

further parts
further parts
Order code 71549958

Zero-point gel COY8

Order code COY8-
Spare parts & accessories

Selection of compatible products

/