
Specs at a glance
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Measurement range
Application A
• pH: 1 to 12
Application B
• pH: 0 to 14
Application F
• pH: 0 to 10 -
Process temperature
Application A: –15 to 80 °C (5 to 176 °F)
Application B: 0 to 135 °C (32 to 275 °F)
Application F: 0 to 70 °C (32 to 158 °F) -
Process pressure
Applications A and B:
0.8 to 17 bar (11.6 to 246.5 psi) absolute
Application F:
0.8 to 7 bar (11.6 to 101.5 psi) absolute
Field of application
Memosens CPS11E is the digital all-rounder for stable processes. It measures reliably even in extreme pH ranges or hazardous areas. Thanks to Memosens 2.0 digital technology, the pH sensor resists moisture and enables lab calibration, increasing process safety and simplifying operation. Its extended storage of calibration and process data provides the perfect basis for predictive maintenance. Designed for a long operating life and low maintenance, Memosens CPS11E offers you best value for money.
Long-term monitoring and limit monitoring of processes with stable process conditions:
- Chemical industry
- Pulp & paper industry
- Power plants (e.g. flue gas washers, boiler feed water)
- Incineration plants
Water & wastewater treatment:
- Drinking water
- Cooling water
- Well water
- Wastewater treatment plants
With ATEX, IECEx, CSA C/US, NEPSI, Japan, INMETRO approvals for use in hazardous areas, zones 0, 1 and 2.
Benefits
IIoT ready: 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.
Low operating costs: Lab calibration and quick sensor exchange in the process result in minimized process downtime and longer sensor lifetime.
Robust, low maintenance electrode: Long poison diffusion path or optimized ion trap prevent poisoning of the electrode reference. Large, dirt-repellent PTFE junction protects from soiling by the medium.
Process glass is suitable for the full pH range and pressure-stable up to 17 bar (246.5 psi) absolute. Optional F-glass allows application in media containing hydrofluoric acid such as etching baths in semiconductor production.
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Improved optional salt storage ensures reliable measurement in low conductivity applications such as boiler feed water.
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Maximum process integrity through non-contact, inductive signal transmission.
Videos
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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 |
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Fundamental selection Meet your basic measurement needs |
Technical excellence
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Simplicity
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Lean selection Handle your core processes easily |
Technical excellence
|
Simplicity
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Extended selection Optimize your processes with innovative technologies |
Technical excellence
|
Simplicity
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Xpert selection Master your most challenging applications |
Technical excellence
|
Simplicity
Variable |
Extended selection
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High-end products
- Highly functional and convenient
Technical excellence
Simplicity

Predecessor
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Technical Information (TI)
Memosens CPS11E
English version - 08/2020
pH sensor for standard applications in process technologyand environmental engineering
EN 11/08/2020Language:
English
Version:
11/08/2020
File size:
734.1 KB
File name:
TI01493CEN_0120.pdf
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Operating Instruction (BA)
pH sensoren CPSx1E, CPFx1E ORP sensoren CPSx2E, CPFx2E
Dutch version - 10/2021
pH- en ORP-meting
EN 14/10/202131/03/202115/03/202109/07/202019/05/2020Language:
Dutch
Version:
14/10/2021
File size:
1 MB
File name:
BA01988CNL_0421.pdf
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Technical Information (TI)
Memosens CPS11E
pH sensor for standard applications in process technologyand environmental engineering
EN 11/08/2020Language:
English
Version:
11/08/2020
File size:
734.1 KB
File name:
TI01493CEN_0120.pdf
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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
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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
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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
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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
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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
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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
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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 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
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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
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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
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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
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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
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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
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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
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White paper (WP)
Damit bei der pH-Messung höchste Genauigkeit garantiert ist
Kalibrierung,Justierung und Verifizierung
Language:
German
Version:
07/04/2021
File size:
605.2 KB
File name:
WP01154C07DE_01.21_Damit bei der pH-Messung hoechste Genauigkeit garantiert ist.pdf
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White paper (WP)
Ensuring maximum accuracy in pH measurement
Calibration, adjustment and verification
Language:
English
Version:
07/04/2021
File size:
600 KB
File name:
WP01154C07EN_01.21_Ensuring maximum accuracy in pH measurement.pdf
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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
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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
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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
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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
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