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Digital pH sensor Memosens CPS61E

Memosens 2.0 glass sensor for the food & beverage industry and for bioreactors in biotech industry

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Digital pH sensor Memosens CPS61E

Memosens 2.0 glass sensor for the food & beverage industry and for bioreactors in biotech industry

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Benefits

  • Memosens 2.0 offers extended storage of calibration and process data, enabling better trend identification and providing a future-proof basis for predictive maintenance and enhanced IIoT services.
  • The sensor's exceptional accuracy and reproducibility help you to keep the pH value in the optimum range for a maximized product yield.
  • A special glass membrane and reference system makes the sensor CIP/SIP and autoclaving resistant (up to 140°C/284°F) offering maximum long-term stability.
  • The sensor protects your product quality with its certified biocompatibility according to USP class VI, FDA compliance of wetted parts, VO 1935/2004 compliance, no cytotoxicity, bioreactivity or animal-based materials.
  • Streamline maintenance of CPS61E with the Memobase Plus software that automatically stores and documents all relevant sensor and process data.
  • Maximum process safety through non-contact, inductive signal transmission
  • Reduced operating costs thanks to minimized process downtime and extended sensor lifetime.

Integrated technologies

Memosens technology
Liquiline: cutting-edge transmitter platform
FLEXible answers to individual needs
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Digital pH sensor Memosens CPS61E

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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.

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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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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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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.

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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.

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

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Product information

Memosens CPS61E - Digital pH sensor for the food industry and bioreactors in the biotech industry
Memosens CPS61E digital pH sensor
Specifications
Measuring / Application task pH
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Description

Keep the pH value in the optimum range and maximize your product yield with Memosens CPS61E. Its rugged design and long-term stability ensure extremely accurate and reproducible measured values even after CIP/SIP or autoclaving. CPS61E features Memosens 2.0 digital technology, offering extended storage of calibration and process data for predictive maintenance. The sensor resists moisture and enables lab calibration, enhancing process integrity and increasing process uptime.

Field of application

Memosens CPS61E measures pH in:

  • Biotech and pharma industries 
- Bioreactors/fermenters: process control in enzyme production - Bioreactors/fermenters: control of culture growth
  • Food & Beverage
- CIP/SIP applications

With ATEX, IECEx, CSA C/US, NEPSI, Japan, INMETRO approvals for use in hazardous areas, zones 0, 1 and 2.

A pharma certificate of compliance with sensor serial number specified is available.

Benefits
  • Memosens 2.0 offers extended storage of calibration and process data, enabling better trend identification and providing a future-proof basis for predictive maintenance and enhanced IIoT services.
  • The sensor's exceptional accuracy and reproducibility help you to keep the pH value in the optimum range for a maximized product yield.
  • A special glass membrane and reference system makes the sensor CIP/SIP and autoclaving resistant (up to 140°C/284°F) offering maximum long-term stability.
  • The sensor protects your product quality with its certified biocompatibility according to USP class VI, FDA compliance of wetted parts, VO 1935/2004 compliance, no cytotoxicity, bioreactivity or animal-based materials.
  • Streamline maintenance of CPS61E with the Memobase Plus software that automatically stores and documents all relevant sensor and process data.
  • Maximum process safety through non-contact, inductive signal transmission
  • Reduced operating costs thanks to minimized process downtime and extended sensor lifetime.
Downloads
Most downloaded
Technical Information (TI)
TI Memosens CPS61E pH sensor for bioreactors in life sciences and for the food industry
English version - 05/2025
Download
Operating Instruction (BA)
BA pH sensors CPSx1E, CPFx1E ORP sensors CPSx2E, CPFx2E pH and ORP measurement
English version - 03/2026
Download
Ex Safety Instruction (XA)
XA Memosens pH/ORP sensors pH and ORP measurement
Supplement to: BA01988C, BA02142C
Safety instructions for electrical apparatus in explosion-hazardous
areas
NEPSI Ex ia IIC T3/T4/T6 Ga
NEPSI Ex ia IIC T4/T6 Ga
English version - 11/2024
Download
The CAD Drawings will be available after the configuration.
All downloads
59 Downloads
Technical Information (TI)
Most downloaded
TI Memosens CPS61E pH sensor for bioreactors in life sciences and for the food industry
English version - 05/2025
Download
Operating Instruction (BA)
Most downloaded
BA pH sensors CPSx1E, CPFx1E ORP sensors CPSx2E, CPFx2E pH and ORP measurement
English version - 03/2026
Download
Ex Safety Instruction (XA)
XA Memosens pH/ORP sensors pH and ORP measurement
Supplement to: BA01988C, BA02142C
Safety instructions for electrical apparatus in explosion-hazardous
areas
NEPSI Ex ia IIC T3/T4/T6 Ga
NEPSI Ex ia IIC T4/T6 Ga
English version - 11/2024
Download
Ex Safety Instruction (XA)
Memosens pH/ORP sensors pH and ORP measurement
Supplement to BA01988C, BA02142C
Safety instructions for electrical apparatus in explosion-hazardous
areas
UK Ex II 1 G Ex ia IIC T3/T4/T6 Ga
UK Ex II 1G Ex ia IIC T4/T6 Ga
English version - 11/2021
Download
Ex Safety Instruction (XA)
Memosens pH/ORP sensors pH and ORP measurement
Supplement to: BA01988C, BA02142C
Safety instructions for electrical apparatus in explosion-hazardous
areas
NEPSI Ex ia IIC T3/T4/T6 Ga
NEPSI Ex ia IIC T4/T6 Ga
English version - 09/2021
Download
Ex Safety Instruction (XA)
XA Memosens pH/ORP sensors pH and ORP measurement
EAC Ex 0Ex ia IIC T3/T4/T6 Ga X
EAC Ex 0Ex ia IIC T4/T6 Ga X
English version - 04/2025
Download
Ex Safety Instruction (XA)
XA Memosens pH/ORP sensors pH and ORP measurement
Supplement to BA01988C, BA02142C
Safety instructions for electrical apparatus for explosion-hazardous areas
ATEX II 1G Ex ia IIC T3/T4/T6 Ga
ATEX II 1G Ex ia IIC T4/T6 Ga
IECEx Ex ia IIC T3/T4/T6 Ga
IECEx Ex ia IIC T4/T6 Ga
English version - 01/2025
Download
Ex Safety Instruction (XA)
XA Memosens pH/ORP sensors pH and ORP measurement
Safety instructions for electrical apparatus in explosion-hazardous
areas
English version - 11/2024
Download
Ex Safety Instruction (XA)
Memosens pH/ORP sensors pH and ORP measurement
Supplement to BA01988C, BA02142C
Safety instructions for electrical apparatus in explosion-hazardous
areas
KOR Ex ia IIC T3/T4/T6 Ga
KOR Ex ia IIC T4/T6 Ga
English version - 10/2021
Download
Ex Safety Instruction (XA)
Memosens pH/ORP sensors pH and ORP measurement
Safety instructions for electrical apparatus in explosion-hazardous
areas
English version - 04/2021
Download
Ex Safety Instruction (XA)
Memosens pH/ORP sensors pH and ORP measurement
Safety instructions for electrical apparatus in explosion-hazardous
areas
English version - 04/2021
Download
Ex Safety Instruction (XA)
XA Memosens pH/ORP sensors Safety instructions for electrical apparatus in explosion-hazardous areas
CSA C/US IS Cl. I Div. 1 GP A-D T3/T4/T6 + CSA C/US IS Cl. I Zone 0 AEx ia IIC T3/T4/T6
CSA C/US IS Cl. I Div. 1 GP A-D T4/T6 + CSA C/US IS Cl. I Zone 0 AEx ia IIC T4/T6
CSA C/ US Cl. 1 Div 1&2 GP A-D T6…T3
English version - 05/2026
Download
Special Documentation (SD)
SD Hygienic applications Liquid analysis equipment
English version - 09/2026
Download
PU (Publication)
Endress+Hauser - ライフサイエンス技術のワンストップパートナー Endress+Hauserが、ライフサイエンス分野の専門知識と、ラマン分
光システム(Raman Rxn2、Raman Rxn4、Rxn-10、Rxn-45、Rxn-46、
バイオマルチオプティックおよびスリーブ、フローフィル、フロー
ベンチ、シングルユース用Ramanオプティックシステム)や水質分
析センサ技術(Liquiline CM44P、CM442、OUSAF44、OUSBT66、
Memosens CPS61E、CLS82E、COS81E、CLS82E)などの信頼性の高い
インラインおよびリアルタイム測定技術によって、世界トップクラ
スのバイオ医薬品メーカーから信頼されている理由を強調したグラ
フィック。
Japanese version - 10/2024
Download
PU (Publication)
効率的なバイオ医薬品の製品開発ライフサイクルのために拡張性を優先 この技術文書では、ライフサイエンス産業におけるバイオプロセス
の競争優位性としての拡張性の重要性と、Endress+Hauserの拡張性
のあるラマンシステム(Raman Rxn2、Raman Rxn4、Rxn-10、Rxn-45
、Rxn-46、バイオマルチオプティックおよびスリーブ、フローフィ
ル、フローベンチ、シングルユース用Ramanオプティックシステム)
、水質分析センサ技術、および水質分析製品ラインナップ
(LiquilineCM44P、CM442、OUSAF44、OUSBT66、Memosens CPS61E、
CLS82E、COS81E、CLS82E)について考察しています。
Japanese version - 10/2024
Download
PU (Publication)
ライフサイエンスにおけるラボからプロセスまでの監視と制御 バイオプロセスの物理的・化学的特性の信頼性の高い測定 この製品リストは、ライフサイエンス業界におけるバイオプロセス
用途向けに、光学分析および液体分析の両方から提供される分析機
器をまとめたものです。含まれる製品には、Raman Rxn2アナライザ
、Raman Rxn4アナライザ、Rxn-10プローブ、バイオマルチオプティ
ックおよびバイオスリーブ、ラマンフローアセンブリ、Rxn-45プロ
ーブ、Rxn-46プローブ、シングルユース向けラマンオプティックシ
ステム、Memosens CPS61E、Memosens COS81E、OUSBT66、Memosens
CPS77E、Memosens CLS82E、OUSAF44、Memosens CPS11E、Memosens
CLS16E、TOCアナライザーCA79、Liquiline変換器プラットフォーム
、およびMemobaseソフトウェアが含まれています。
Japanese version - 08/2025
Download
PU (Publication)
Prioritize scalability for an efficient biopharmaceutical product development lifecycle This technical paper studies the importance of scalability as a
competitive advantage in bioprocessing in the Life Science industry,
and Endress+Hauser's scalable Raman systems (Raman Rxn2,
Raman Rxn4, Rxn-10, Rxn-45, Rxn-46, bio multi optic and sleeve,
flow cell and flow bench, Raman optic system for single use) and
liquid analysis sensor technology and Liquid Analysis portfolio
(Liquiline CM44P, CM442 and OUSAF44, OUSBT66 and
Memosens CPS61E, CLS82E, COS81E, CLS82E).
Czech version - 09/2024
Download
PU (Publication)
Prioritize scalability for an efficient biopharmaceutical product development lifecycle This technical paper studies the importance of scalability as a
competitive advantage in bioprocessing in the Life Science industry,
and Endress+Hauser's scalable Raman systems (Raman Rxn2,
Raman Rxn4, Rxn-10, Rxn-45, Rxn-46, bio multi optic and sleeve,
flow cell and flow bench, Raman optic system for single use) and
liquid analysis sensor technology and Liquid Analysis portfolio
(Liquiline CM44P, CM442 and OUSAF44, OUSBT66 and
Memosens CPS61E, CLS82E, COS81E, CLS82E).
English version - 06/2024
Download
PU (Publication)
Endress+Hauser - your one-source Life Sciences technology partner Graphic highlighting why Endress+Hauser is trusted by the
world's top biopharmaceutical manufacturers for its Life
Sciences expertise and reliable inline, real-time measurement
technologies like Raman spectroscopy systems (Raman Rxn2,
Raman Rxn4, Rxn-10, Rxn-45, Rxn-46, bio multi optic and sleeve,
flow cell and flow bench, Raman optic system for single use) and
liquid analysis sensor technology (Liquiline CM44P, CM442 and
OUSAF44, OUSBT66 and Memosens CPS61E, CLS82E, COS81E,
CLS82E).
Czech version - 09/2024
Download
PU (Publication)
Endress+Hauser - your one-source Life Sciences technology partner Graphic highlighting why Endress+Hauser is trusted by the
world's top biopharmaceutical manufacturers for its Life
Sciences expertise and reliable inline, real-time measurement
technologies like Raman spectroscopy systems (Raman Rxn2,
Raman Rxn4, Rxn-10, Rxn-45, Rxn-46, bio multi optic and sleeve,
flow cell and flow bench, Raman optic system for single use) and
liquid analysis sensor technology (Liquiline CM44P, CM442 and
OUSAF44, OUSBT66 and Memosens CPS61E, CLS82E, COS81E,
CLS82E).
English version - 06/2024
Download
PU (Publication)
Lab-to-process monitoring & control in Life Sciences - Reliable measurement of bioprocess physical and chemical properties A combined product list of analysis offerings from both Optical Analysis
and LIquid Analysis for bioprocessing applications in the life science
industry (including Raman Rxn2 analyzer, Raman Rxn4 analyzer,
Rxn-10 probe, bio multi optic and bio sleeve, Raman flow assembly,
Rxn-45 probe, Rxn-46 probe, Raman optic system for single use,
Memosens CPS61E, Memosens COS81E, OUSBT66, Memosens CPS61E,
Memosens CPS77E, Memosens CLS82E, OUSAF44, Memosens CPS11E,
Memosens CLS16E, TOC Analyzer CA79, Liquiline transmitter platform, and
Memobase software).
English version - 04/2024
Download
Fields of Activities (FA)
Sensors, transmitters, compact devices and assemblies Experts in Liquid Analysis
English version - 02/2026
Download
Fields of Activities (FA)
Kompetenz in der Flüssigkeitsanalyse Vom Sensor bis zur schlüsselfertigen Komplettlösung
German version - 09/2022
Download
Fields of Activities (FA)
水質分析の専門知識 センサからすべてを備えた
ターンキーソリューションまで
Japanese version - 06/2025
Download

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Memosens CPS61E - Digital pH sensor for the food industry and bioreactors in the biotech industry
Memosens CPS61E digital pH sensor

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Spare parts and accessories

further parts
further parts

Kit CPSxx protective caps

further parts
further parts
Order code 71538217

Memoclip label Memosens sensor

Order code 71038228

Memoclip label memosens cable

Order code 71038229

KCL-Electrolyte solution CPY4

Order code CPY4-
Spare parts and accessories

Selection of compatible products

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