Specs at a glance
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Measurement range
pH 1 to 13
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Process temperature
–15 to 80 °C (5 to 176 °F)
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Process pressure
0.8 to 4 bar (11.6 to 58 psi) (absolute)
Field of application
Memosens CPS31E is the expert for pH compensation in disinfection processes. It delivers stable measurement results, ensuring safe swimming pool and drinking water. Thanks to Memosens 2.0 digital technology, CPS31E provides the perfect data basis for predictive maintenance, offers easy operation and more process uptime since it can be calibrated in the laboratory and quickly exchanged on site. The sensor resists moisture and its 3 optional junctions make it suitable for minimum conductivity.
Drinking water
Swimming pool water
pH compensation for free chlorine and free bromine measurement
Benefits
Reliable: Ceramic junction ensures reliable measurement at low conductivities. For minimum conductivities, 3 junctions are the best choice.
Robust: The optional salt storage provides for extended operating time.
Precise: The sensor shows minimum drift thanks to a very low level of ion depletion in electrolyte.
Memosens 2.0 offers extended storage of calibration and process data. These data are the ideal basis for predictive maintenance and can also be used to develop and provide enhanced IIoT services.
Safe: Non-contact, inductive, digital signal transmission eliminates errors due to moisture.
Cost-efficient: Fast sensor exchange in the field increases process uptime and regeneration extends the sensor lifetime.
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Standard products
- Reliable, robust and low-maintenance
Technical excellence
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Specialized products
- Designed for demanding applications
Technical excellence
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| FLEX selections | Technical excellence | Simplicity |
|---|---|---|
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
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Simplicity
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Extended selection Optimize your processes with innovative technologies |
Technical excellence
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Simplicity
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Xpert selection Master your most challenging applications |
Technical excellence
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Simplicity
Variable |
Extended selection
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High-end products
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Technical excellence
Simplicity
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Most downloaded
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EU Declaration
Product family: Memosens
English version - 03/2021
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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Technical Information (TI)
Memosens CPS31E
English version - 03/2021
pH sensor for standard applications in drinking water andswimming pool water
EN 19/03/2021Language:
English
Version:
19/03/2021
File size:
922.6 KB
File name:
TI01574CEN_0121.pdf
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33 documents
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Technical Information (TI)
Memosens CPS31E
pH sensor for standard applications in drinking water andswimming pool water
EN 19/03/2021Language:
English
Version:
19/03/2021
File size:
922.6 KB
File name:
TI01574CEN_0121.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 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 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 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 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
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
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 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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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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Case Study (CS)
Trinkwasser-Überwachung bei Grossveranstaltung
Für die 30’000 Teilnehmer des Pfadilagers im BuLa muss Trinkwasser in einwandfreier Qualität zur Verfügung gestellt werden. Mit der Netilion-Lösung kann die Kontrolle zeit- und ortsunabhängig erfolgen.
Language:
German
Version:
12/10/2022
File size:
833.5 KB
File name:
CS01708S20DE01.22_00_BULA_.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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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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Explosion Protection
Product family: Memocheck, Memosens
Product root: CLS15E-, CLS16E-, CLS21E-, CLS82E-, CPS11E-, CPS12E-, CPS31E-, CPS41E-, CPS42E-, CPS47D-, CPS47E-, CPS61E-, CPS71E-, CPS72E-, CPS77D-, CPS77E-, CPS91E-, CPS92E-, CPS97D-, CPS97E-, CYP02E- Region: Canada, USA {ZMMM_APPROVAL_A GENCY}: 150
Language:
English
Version:
10/02/2022
File size:
2 MB
File name:
CoFC_80086777_EN with Control_Drawing.pdf
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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
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