
Specs at a glance
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Measuring range
Application A
• pH: 1 to 12
Application B
• pH: 0 to 14 -
Process temperature
Application A: –15 to 80 °C (5 to 176 °F)
Application B: 0 to 135 °C (32 to 275 °F) -
Process pressure
0.8 to 11 bar (11.6 to 159.5 psi) absolute
Field of application
Memosens CPS41E features a liquid KCl electrolyte and a ceramic junction making it extremely suitable for harsh chemical applications, fast-changing media and liquids with low conductivity or high organic content. Its integrated Memosens 2.0 digital technology enables extended data storage and lab calibration which results in easier operation and more process uptime and provides the perfect basis for predictive maintenance. The non-contact signal transmission ensures integrity of your process.
Media with low conductivities or a high proportion of organic solvents or alcohols and fast changing media:
Chemical industry
Organic chemicals
Power plants, e.g. boiler feed water
Laboratory measurements
With ATEX, IECEx, CSA C/US, NEPSI, Japan, INMETRO approvals for use in hazardous areas, zones 0, 1 and 2.
Benefits
Memosens 2.0 for perfect support of IIoT, digital transformation and predictive maintenance: It provides enhanced storage of calibration and process data, enabling better trend identification.
Suitable for harsh conditions: Continuous refilling of KCl bridge electrolyte and a separate reference lead prevent poisoning of the electrode.
Application in quickly changing media: Memosens CPS41E offers a fast response time thanks to its liquid KCl electrolyte and ceramic junction.
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Liquid KCl electrolyte enables reliable measurement even at very low conductivities (> 0.1 µS/cm).
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Suitable for cleaning in place (CIP) and sterilization in place (SIP)
Inductive signal transmission eliminates any interference by moisture, leading to safer processes.
Reduced operating costs: Sensor calibration and regeneration in the lab allows for less process downtime and extends the sensor lifetime.
Extended selection
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High-end products
- Highly functional and convenient
Technical excellence
Simplicity

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Standard products
- Reliable, robust and low-maintenance
Technical excellence
Simplicity
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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
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Technical Information (TI)
Memosens CPS41E
English version - 10/2020
pH sensor for process technology
EN More 13/10/2020Language:
English
Version:
13/10/2020
File size:
861.8 KB
File name:
TI01495CEN_0120.pdf
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Operating Instruction (BA)
pH sensors CPSx1E, CPFx1E ORP sensors CPSx2E, CPFx2E
English version - 10/2021
pH and ORP measurement
EN More 14/10/202131/03/202109/07/202019/05/2020Language:
English
Version:
14/10/2021
File size:
1 MB
File name:
BA01988CEN_0421.pdf
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-
-
Technical Information (TI)
Memosens CPS41E
pH sensor for process technology
EN Select other language 13/10/2020Language:
English
Version:
13/10/2020
File size:
861.8 KB
File name:
TI01495CEN_0120.pdf
-
-
-
Operating Instruction (BA)
pH sensors CPSx1E, CPFx1E ORP sensors CPSx2E, CPFx2E
pH and ORP measurement
EN Select other language 14/10/202131/03/202109/07/202019/05/2020Language:
English
Version:
14/10/2021
File size:
1 MB
File name:
BA01988CEN_0421.pdf
-
-
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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 GaEN Select other language 19/11/2024Language:
English
Version:
19/11/2024
File size:
537 KB
File name:
XA03488CEN_0124-00.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
UK Ex II 1 G Ex ia IIC T3/T4/T6 Ga
UK Ex II 1G Ex ia IIC T4/T6 GaLanguage:
English
Version:
26/11/2021
File size:
684.7 KB
File name:
XA02588CEN_0221-00.pdf
-
-
-
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 GaEN Select other language 15/01/202523/04/202118/02/202103/07/2020Language:
English
Version:
15/01/2025
File size:
496.1 KB
File name:
XA01991CEN_0424-00.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
NEPSI Ex ia IIC T3/T4/T6 Ga
NEPSI Ex ia IIC T4/T6 GaEN Select other language 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
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 XEN Select other language 26/01/2022Language:
English
Version:
26/01/2022
File size:
424.3 KB
File name:
XA02817CEN_0122-00.pdf
-
-
-
Ex Safety Instruction (XA)
XA Memosens pH/ORP sensors
pH and ORP measurement
Safety instructions for electrical apparatus in explosion-hazardous
areasEN Select other language 27/11/202426/08/2024Language:
English
Version:
27/11/2024
File size:
503.3 KB
File name:
XA03347CEN_0224-00.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 GaEN Select other language 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
areasEN Select other language 22/04/202131/07/2020Language:
English
Version:
22/04/2021
File size:
505.2 KB
File name:
XA02082CEN_0221.pdf
-
-
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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 InstructionsEN Select other language 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
Safety instructions for electrical apparatus in explosion-hazardous
areasEN Select other language 22/04/202115/10/2020Language:
English
Version:
22/04/2021
File size:
491.8 KB
File name:
XA02244CEN_0221.pdf
-
-
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Fields of Activities (FA)
Kompetenz in der Flüssigkeitsanalyse
Vom Sensor bis zur schlüsselfertigen Komplettlösung
Language:
German
Version:
21/09/2022
File size:
1.3 MB
File name:
FA01018CDE_0422_Analyse_Portfolio_lowres.pdf
-
-
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Fields of Activities (FA)
Sensors, transmitters, compact devices and assemblies
Experts in Liquid Analysis
Language:
English
Version:
24/09/2024
File size:
4.2 MB
File name:
FA00007CEN_Analyse_21.24_LowRes.pdf
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Fields of Activities (FA)
Sıvı analizinde uzmanlık
Sensörlerden komple anahtar teslim çözümlere
Language:
Turkish
Version:
23/11/2023
File size:
7.2 MB
File name:
FA01088C56TR01.23.pdf
-
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Fields of Activities (FA)
Sensoren, Messumformer, Kompaktgeräte and Armaturen
Kompetenz in der Flüssigkeitsanalyse
Language:
German
Version:
24/09/2024
File size:
4.1 MB
File name:
FA00007CDE_Analyse_21.24_LowRes.pdf
-
-
-
Fields of Activities (FA)
Expertise in liquid analysis
From sensors to complete turnkey solutions
Language:
English
Version:
21/09/2022
File size:
1.2 MB
File name:
FA01018CEN_0422_Analysis_Portfolio_lowres.pdf
-
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Competence Brochure (CP)
pH measurement in industrial processes
Selection and engineering guide for different industries and
applicationsLanguage:
English
Version:
02/12/2021
File size:
3.2 MB
File name:
CP00010CEN_1621_pH selection guide_2021.pdf
-
-
-
Competence Brochure (CP)
産業プロセスにおけるpH測定
さまざまな産業およびアプリケーション向けのpH測定セレクションガイド
Language:
Japanese
Version:
08/02/2024
File size:
2.6 MB
File name:
CP00010CJA_1315_1024_pH_selection_guide.pdf
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-
-
Competence Brochure (CP)
pH-Messung in Industrieprozessen
Auswahl- und Engineering-Hilfe für verschiedene Industriebranchen und
ApplikationenLanguage:
German
Version:
01/12/2021
File size:
3.3 MB
File name:
CP00010CDE_1621_pH Auswahlhilfe_2021.pdf
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