
Specs at a glance
-
Measurement range
pH: 0 to 14
-
Process temperature
Application N:
0 to 100 °C (32 to 212 °F)
Up to 140 °C (284 °F) for sterilization -
Process pressure
0.8 to 7 bar (11.6 to 101.5 psi) absolute
Field of application
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.
Memosens CPS61E measures pH in:
Biotech and pharma industries
- Bioreactors/fermenters: process control in enzyme production
- Bioreactors/fermenters: control of culture growthFood & 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.
Videos
Extended selection
-
High-end products
- Highly functional and convenient
Technical excellence
Simplicity

-
Standard products
- Reliable, robust and low-maintenance
Technical excellence
Simplicity
-
Specialized products
- Designed for demanding applications
Technical excellence
Simplicity
Variable
FLEX selections | Technical excellence | Simplicity |
---|---|---|
Fundamental selection Meet your basic measurement needs |
Technical excellence
|
Simplicity
|
Lean selection Handle your core processes easily |
Technical excellence
|
Simplicity
|
Extended selection Optimize your processes with innovative technologies |
Technical excellence
|
Simplicity
|
Xpert selection Master your most challenging applications |
Technical excellence
|
Simplicity
Variable |
Predecessor
-
-
Technical Information (TI)
Memosens CPS61E
English version - 10/2021
pH sensor for bioreactors in life sciences and for the food industry
EN 14/10/202131/03/2021Language:
English
Version:
14/10/2021
File size:
503.9 KB
File name:
TI01566CEN_0221.pdf
-
-
-
Technical Information (TI)
Memosens CPS61E
pH sensor for bioreactors in life sciences and for the food industry
EN 14/10/202131/03/2021Language:
English
Version:
14/10/2021
File size:
503.9 KB
File name:
TI01566CEN_0221.pdf
-
-
-
Operating Instruction (BA)
pH sensors CPSx1E, CPFx1E ORP sensors CPSx2E, CPFx2E
pH and ORP measurement
EN 14/10/202131/03/202109/07/202019/05/2020Language:
English
Version:
14/10/2021
File size:
1 MB
File name:
BA01988CEN_0421.pdf
-
-
-
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 1GEx ia IIC T4/T6 Ga
Language:
English
Version:
26/11/2021
File size:
684.7 KB
File name:
XA02588CEN_0221-00.pdf
-
-
-
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 EAC Ex 0Ex ia IIC T3/T4/T6 Ga X EAC Ex 0Ex ia IIC T4/T6 Ga X
EN 26/01/2022Language:
English
Version:
26/01/2022
File size:
424.3 KB
File name:
XA02817CEN_0122-00.pdf
-
-
-
Ex Safety Instruction (XA)
Memosens pH/ORP sensors
pH and ORP measurement Safety instructions for electrical apparatus in explosion-hazardous areas
EN 23/04/202118/02/202103/07/2020Language:
English
Version:
23/04/2021
File size:
893.2 KB
File name:
XA01991CEN_0321.pdf
-
-
-
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
EN 07/09/202105/08/2020Language:
English
Version:
07/09/2021
File size:
529.3 KB
File name:
XA02113CEN_0221.pdf
-
-
-
Ex Safety Instruction (XA)
Memosens pH/ORP sensors
pH and ORP measurement Safety instructions for electrical apparatus in explosion-hazardous areas
EN 22/04/202131/07/2020Language:
English
Version:
22/04/2021
File size:
505.2 KB
File name:
XA02082CEN_0221.pdf
-
-
-
Ex Safety Instruction (XA)
Memosens pH/ORP sensors
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 Safety Instructions
EN 01/12/202215/02/202220/08/2020Language:
English
Version:
01/12/2022
File size:
860.7 KB
File name:
XA02235CEN_0422-00.pdf
-
-
-
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
EN 22/10/2021Language:
English
Version:
22/10/2021
File size:
425.6 KB
File name:
XA02739CEN_0121.pdf
-
-
-
Ex Safety Instruction (XA)
Memosens pH/ORP sensors
pH and ORP measurement Safety instructions for electrical apparatus in explosion-hazardous areas
EN 22/04/202115/10/2020Language:
English
Version:
22/04/2021
File size:
491.8 KB
File name:
XA02244CEN_0221.pdf
-
-
-
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
-
-
-
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-Optic, 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).
Language:
English
Version:
10/08/2022
File size:
782.3 KB
File name:
PU01484CEN_0122.pdf
-
-
-
Fields of Activities (FA)
Expertise in liquid analysis
From sensors to complete turnkey solutions
EN 21/09/2022Language:
English
Version:
21/09/2022
File size:
1.2 MB
File name:
FA01018CEN_0422_Analysis_Portfolio_lowres.pdf
-
-
-
Competence Brochure (CP)
pH measurement in industrial processes
Selection and engineering guide for different industries and applications
Language:
English
Version:
02/12/2021
File size:
3.2 MB
File name:
CP00010CEN_1621_pH selection guide_2021.pdf
-
-
-
Competence Brochure (CP)
pH-Messung in Industrieprozessen
Auswahl- und Engineering-Hilfe für verschiedene Industriebranchen und Applikationen
Language:
German
Version:
01/12/2021
File size:
3.3 MB
File name:
CP00010CDE_1621_pH Auswahlhilfe_2021.pdf
-
-
-
Manufacturer Declaration
Product family: Memosens, OrbiPore, OrbiSint
Product root: CPS11D-, CPS11E-, CPS12D-, CPS12E-, CPS41E-, CPS61E-, CPS71E-, CPS91D-, CPS91E-, CPS92D- {ZMMM_DECLARATI ON_NUMBER}: HE_01379_01.20 Additional information: CRN
EN 03/03/2022Language:
English
Version:
03/03/2022
File size:
274.6 KB
File name:
CPSxxE_CRN_HE_01379_02.22.pdf
-
-
-
Manufacturer Declaration
Product family: Memosens
Product root: CPS11E-, CPS31E-, CPS41E-, CPS61E-, CPS71E-, CPS91E- Declaration number: HE_01504_01.21 Manufacturer specification: RoHS Additional information: China-RoHS
Language:
Chinese
Version:
20/10/2021
File size:
416.8 KB
File name:
HE_01504_01.21_CPSx1E_China-RoH_orange50.pdf
-
-
-
EU Declaration
Product family: Memosens
Product root: CPS11E-, CPS12E-, CPS16E-, CPS31E-, CPS41E-, CPS42E-, CPS61E-, CPS62E-, CPS71E-, CPS72E-, CPS76E-, CPS91E-, CPS92E-, CPS96E- Declaration number: EC_00831_03.20
EN 15/03/2021Language:
English
Version:
15/03/2021
File size:
236.8 KB
File name:
EC_00831_03.20 CPSxxE nonEx unterschrieben.pdf
-
-
-
EU Declaration
Product family: Memosens
Product root: CPS11E-, CPS12E-, CPS16E-, CPS31E-, CPS41E-, CPS42E-, CPS61E-, CPS62E-, CPS71E-, CPS72E-, CPS76E-, CPS91E-, CPS92E-, CPS96E- Declaration number: EC_00832_03.20
EN 15/03/2021Language:
English
Version:
15/03/2021
File size:
297.6 KB
File name:
EC_00832_03.20 CPSxxE Ex unterschrieben.pdf
-
-
-
UK Conformity Assessed
Product family: Memocheck, Memosens
Product root: CPS11E-, CPS12E-, CPS16E-, CPS31E-, CPS41E-, CPS42E-, CPS61E-, CPS62E-, CPS71E-, CPS72E-, CPS76E-, CPS91E-, CPS92E-,C PS96E- Declaration number: UK_00279_02.21
Language:
English
Version:
19/10/2021
File size:
285.1 KB
File name:
UK_00279_02.21_CPSxxE.pdf
-
-
-
UK Conformity Assessed
Product family: Memosens
Product root: CPS11E-, CPS12E-, CPS16E-, CPS31E-, CPS41E-, CPS42E-, CPS61E-, CPS62E-, CPS71E-, CPS72E-, CPS76E-, CPS91E-, CPS92E-, C PS96E- Declaration number: UK_00393_01.21
Language:
English
Version:
10/08/2021
File size:
279.5 KB
File name:
UK_00393_01.21 CPSxxE NonEx.pdf
-
-
-
Miscellaneous
Product family: Absorbance, Analog, Cell growth, CeraGel, CeraLiquid, Ceramax, CeraTex, ConduMax H, ConduMax W, InduMax H, InduMax P , Isemax, Memosens, OrbiPac, OrbiPore, OrbiSint, OrbiTex, OxyMax H, OxyMax W, PuriSys, Sensor, Spectrometer, TopHit, Turbidity and t otal suspended solids, Turbimax, UV, Viomax
Product root: CAS40D-, CAS51D-, CCS120-, CCS120D-, CCS50-, CCS50D-, CCS51-, CCS51D-, CCS55D-, CCS58D-, CFS51-, CKF50-, CKI50-, CLS12 -, CLS13-, CLS15-, CLS15D-, CLS16-, CLS16D-, CLS19-, CLS21D-, CLS30-, CLS50-, CLS50D-, CLS54-, CLS54D-, CLS82D-, COS22-, COS22D-, CO S41-, COS51D-, COS61-, COS61D-, COS81D-, CUS50D-, CUS51D-, CUS52D-, CVF52-, CVI52-, OUSAF11-, OUSAF12-, OUSAF21-, OUSAF22-, OUSAF44- , OUSAF46-, OUSBT66-, OUSTF10- Region: Eurasian Economic Union Approval agency: EAC Approval number: EAEC N RU D-DE.PA05.B.03690_22
Language:
Russian
Version:
26/07/2022
File size:
338.6 KB
File name:
EAEC N RU D-DE.PA05.B.03690_22.pdf
-
-
-
Miscellaneous
Product family: CeraGel, CeraLiquid, Ceramax, CeraTex, Memosens, OrbiPore, OrbiSint, OrbiTex
Product root: CLS15E-, CLS16E-, CLS21E-, CLS82E-, COS22E-, COS51E-, COS81E-, CPF81E-, CPF82E-, CPS11-, CPS11D-, CPS11E-, CPS12-, CPS 12D-, CPS12E-, CPS16D-, CPS16E-, CPS171D-, CPS21-, CPS31-, CPS31D-, CPS31E-, CPS341D-, CPS41-, CPS41D-, CPS41E-, CPS42-, CPS42D-, CP S42E-, CPS47D-, CPS47E-, CPS61E-, CPS62E-, CPS71-, CPS71D-, CPS71E-, CPS72-, CPS72D-, CPS72E-, CPS76D-, CPS76E-, CPS77D-, CPS77E-, C PS91-, CPS91D-, CPS91E-, CPS92-, CPS92D-, CPS92E-, CPS96D-, CPS96E-, CPS97D-, CPS97E- Region: Eurasian Economic Union Approval agency: NANIO Approval number: EAEC N RU D-DE.PA05.B.03690_22
Language:
Russian
Version:
26/07/2022
File size:
338.6 KB
File name:
EAEC N RU D-DE.PA05.B.03690_22.pdf
-
-
-
Explosion Protection
Product family: Memosens
Product root: CPS11E-, CPS12E-, CPS16E-, CPS31E-, CPS41E-, CPS42E-, CPS47E-, CPS61E-, CPS62E-, CPS71E-, CPS72E-, CPS76E-, CPS77E-, C PS91E-,CPS92E-, CPS96E-, CPS97E- Region: South Korea Approval agency: KTL Protection: Ex i Zone 0
Language:
Korean
Version:
17/09/2021
File size:
685.4 KB
File name:
21-KA4BO-0621X(2021-051598-01)_KCs certificate.pdf
-
-
-
Explosion Protection
Product family: Memocheck, Memosens
Product root: CPS11E-, CPS12E-, CPS16E-, CPS31E-, CPS41E-, CPS42E-, CPS47D-, CPS47E-, CPS61E-, CPS62E-, CPS71E-, CPS72E-, CPS76E-, CPS77D-, CPS77E-, CPS91E-, CPS92E-, CPS96E-, CPS97D-, CPS97E-, CYP02E- Region: International (IECEx) Approval agency: DEKRA Protection: Ex ia IIC T6 Gb, Ex ia IIC T6...T3 Ga, Ex ia 020 055 005
Language:
English
Version:
08/02/2021
File size:
302.8 KB
File name:
IECEx_BVS_19.0056X_002.pdf
-
-
-
Explosion Protection
Product family: Memocheck, Memosens
Product root: CPS11E-, CPS12E-, CPS16E-, CPS31E-, CPS41E-, CPS42E-, CPS47D-, CPS47E-, CPS61E-, CPS62E-, CPS71E-, CPS72E-,< bProduct root: CPS11E-, CPS12E-, CPS16E-, CPS31E-, CPS41E-, CPS42E-, CPS47D-, CPS47E-, CPS61E-, CPS62E-, CPS71E-, CPS72E-,< b r/>CPS76E-, CPS77D-, CPS77E-, CPS91E-, CPS92E-, CPS96E-, CPS97D-, CPS97E-, CYP02E- Region: Japan
Language:
Japanese
Version:
19/02/2023
File size:
417.3 KB
File name:
CML 19JPN2485X JP Issue 4.pdf
-
-
-
Explosion Protection
Product family: Memocheck, Memosens
Product root: CPS11E-, CPS12E-, CPS41E-, CPS47D-, CPS61E-, CPS71E-, CPS77D-, CPS91E-, CPS97D-, CYP02E- Region: 030 Approval agency: NEPSI Protection: Ex ia IIC T6 Gb, Ex ia IIC T6...T3 Ga, Ex ia 020 055 005
Language:
Chinese
Version:
28/12/2021
File size:
2.3 MB
File name:
GYJ19.1375X_S2_CPSxxE.pdf
-
-
-
Explosion Protection
Product family: Memocheck, Memosens
Product root: CPS11E-, CPS12E-, CPS41E-, CPS91E-, CYP02E- Region: Brazil Approval agency: INMETRO {ZMMM_E_P ROTECTION}: 050~070 020 035 050, 050~070 020 050 005, 050~070 020 055 005
Language:
Portuguese
Version:
28/10/2021
File size:
1.2 MB
File name:
TUEV 20.0538X rev 01.pdf
-
-
-
Explosion Protection
Product family: Memocheck, Memosens
Product root: CPS11E-, CPS12E-, CPS16E-, CPS31E-, CPS41E-, CPS42E-, CPS47E-, CPS61E-, CPS62E-, CPS71E-, CPS72E-, CPS76E-, CPS77E-,C PS91E-, CPS92E-, CPS96E-, CPS97E-, CYP02E- Region: Great Britain Approval agency: CML Protection: Ex i Zone 0/1
Language:
English
Version:
09/06/2021
File size:
5.2 MB
File name:
CML 21UKEX2129X Iss.1 with ATEX.pdf
-
-
-
Explosion Protection
Product family: Memocheck, Memosens
Product root: CPS11E-, CPS12E-, CPS16E-, CPS31E-, CPS41E-, CPS42E-, CPS47D-, CPS47E-, CPS61E-, CPS62E-, CPS71E-, CPS72E-, CPSProduct root: CPS11E-, CPS12E-, CPS16E-, CPS31E-, CPS41E-, CPS42E-, CPS47D-, CPS47E-, CPS61E-, CPS62E-, CPS71E-, CPS72E-, CPS 76E-, CPS77D-, CPS77E-, CPS91E-, CPS92E-, CPS96E-, CPS97D-, CPS97E-, CYP02E- Region: Japan
Language:
Japanese
Version:
19/02/2020
File size:
416.9 KB
File name:
CML 19JPN2485X JP Issue 2.pdf
-