Specs at a glance
-
Measurement range
0.01 to 100 mg/l
0.00 to 1000 %SAT
0 to 2000 hPa -
Process temperature
-5 to 60 °C
(20 to 140 °F) -
Process pressure
Max. 5 bar abs
(Max. 72.5 psi abs)
Field of application
Memosens COS51E is perfectly suited for all wastewater and utility applications including hazardous areas. The sensor is highly accurate and moisture-resistant ensuring the safety of your processes. COS51E features Memosens 2.0 digital technology. It is able to store more calibration and process data and thus provides the perfect basis for predictive maintenance and IIoT services. Designed to be low-maintenance with a long operating life, the sensor offers outstanding value for money.
Memosens COS51E measures the dissolved oxygen concentration in:
Wastewater treatment plants:
- O2 control in the aeration basin
- Process water treatment and monitoringUtilities of all industries:
- O2 control in the biological treatment
- Process water treatment and monitoringWater works:
- Status monitoring of drinking water (oxygen enrichment, corrosion protection, etc.)
- Water quality monitoring in rivers, lakes or seas
The sensor is suitable for hazardous area use (ATEX, FM, CSA).
Benefits
Wide measuring range: The amperometric measuring principle and cathode design make the sensor suitable for all wastewater applications from industrial to municipal plants.
High accuracy: Thanks to its amperometric, three-electrode design, the sensor provides long-term stable measurement with low drift.
Increased plant availability: Memosens technology and Liquiline transmitters enable plug & play for fast commissioning and sensor exchange.
Non-contact, inductive signal transmission ensures maximum process integrity.
Memosens 2.0 digital technology makes the sensor ready for predictive maintenance and IIoT services since it offers extended storage of calibration and process data.
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 |
Loading alternative products
Predecessor
Success stories
Could also interest you
Most downloaded
-
-
Short Instruction (KA)
Memosens COS51E
Finnish version - 10/2021
Amperometrinen happianturi, jossa Memosens 2.0 -teknologia
EN 07/10/2021Language:
Finnish
Version:
07/10/2021
File size:
612.7 KB
File name:
KA01542CFI_0121.pdf
-
-
-
Ex Safety Instruction (XA)
Memosens COS22E Memosens COS51E
Finnish version - 11/2021
Lisäys BA02145C: hen Lisäys BA02146C: hen Räjähdysvaarallisten tilojen sähkölaitteiden turvallisuusohjeet
EN 29/11/202105/07/2021Language:
Finnish
Version:
29/11/2021
File size:
1.3 MB
File name:
XA02621CFI_0221-00.pdf
-
25 documents
-
-
Technical Information (TI)
Memosens COS51E
Amperometric oxygen sensor for water, wastewater and utilities
EN 08/02/202207/10/2021Language:
English
Version:
08/02/2022
File size:
1.3 MB
File name:
TI01620CEN_0222-00.pdf
-
-
-
Operating Instruction (BA)
Memosens COS51E
Amperometric oxygen sensor with Memosens 2.0 technology
EN 08/02/202207/10/2021Language:
English
Version:
08/02/2022
File size:
1.7 MB
File name:
BA02146CEN_0222-00.pdf
-
-
-
Short Instruction (KA)
Memosens COS51E
Amperometric oxygen sensor with Memosens 2.0 technology
EN 07/10/2021Language:
English
Version:
07/10/2021
File size:
613.6 KB
File name:
KA01542CEN_0121.pdf
-
-
-
Ex Safety Instruction (XA)
Memosens COS22E Memosens COS51E
Supplement to BA02145C Supplement to BA02146C Safety instructions for electrical apparatus in explosion-hazardous areas
EN 17/11/2021Language:
English
Version:
17/11/2021
File size:
504.9 KB
File name:
XA02752CEN_0121-00.pdf
-
-
-
Ex Safety Instruction (XA)
Memosens COS22E Memosens COS51E
KOR Ex ia IIC T6… T4 Ga Safety instructions for electrical apparatus in explosion-hazardous areas
EN 18/03/2022Language:
English
Version:
18/03/2022
File size:
420.2 KB
File name:
XA02791CEN_0121-00.pdf
-
-
-
Ex Safety Instruction (XA)
Memosens COS22E Memosens COS51E
EAC Ex 0Ex ia IIC T6 … T4 Ga X Safety instructions for electrical apparatus in explosion-hazardous areas
EN 11/05/2022Language:
English
Version:
11/05/2022
File size:
420.1 KB
File name:
XA02840CEN_0121-00.pdf
-
-
-
Ex Safety Instruction (XA)
Memosens COS22E Memosens COS51E
UK Ex II 1G Ex ia IIC T6… T4 Ga Safety instructions for electrical apparatus in explosion-hazardous areas
Language:
English
Version:
11/03/2022
File size:
419.3 KB
File name:
XA02841CEN_0121-00.pdf
-
-
-
Ex Safety Instruction (XA)
Memosens oxygen sensors
IS Class I Div 1 Groups A, B, C, D Ex ia IIC T6... T4 Ga Class I Zone 0 AEx ia IIC T6... T4 Ga Safety instructions for electrical apparatus in explosion-hazardous areas
EN 12/01/2023Language:
English
Version:
12/01/2023
File size:
499.7 KB
File name:
XA03088CEN_0122-00.pdf
-
-
-
Ex Safety Instruction (XA)
Memosens COS22E Memosens COS51E
Supplement to BA02145C Supplement to BA02146C Safety instructions for electrical equipment in explosion-hazardous areas
EN 29/11/202105/07/2021Language:
English
Version:
29/11/2021
File size:
1.3 MB
File name:
XA02621CEN_0221-00.pdf
-
-
-
Ex Safety Instruction (XA)
Memosens COS22E Memosens COS51E
Supplement to BA02145C Supplement to BA02146C Safety instructions for electrical apparatus in explosion-hazardous areas
EN 17/11/2021Language:
English
Version:
17/11/2021
File size:
489.1 KB
File name:
XA02753CEN_0121-00.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
-
-
-
Manufacturer Declaration
Product family: Memosens
Product root: COS51E- Declaration number: HE_01733_01.23 Manufacturer specification: RoHS Additional information: China-RoHS
Language:
Chinese
Version:
16/01/2023
File size:
403.1 KB
File name:
HE_01733_01.23_COS51E_OOS51E_China-RoHS_orange.pdf
-
-
-
EU Declaration
Product family: OxyMax H, OxyMax W
Product root: COS22D-, COS51D- Declaration number: EU_00912_01.21 Additional information: NonEx
EN 12/05/2021Language:
English
Version:
12/05/2021
File size:
245.8 KB
File name:
EU_00912_01.21_nonEx_COS22_51E unterschrieben.pdf
-
-
-
UK Conformity Assessed
Product family: Memosens
Product root: COS22E-, COS51E- Declaration number: UK_00275_01.21
Language:
English
Version:
29/09/2021
File size:
280.9 KB
File name:
UK_00275_01.21 COS22_51E_Ex.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-, CAS80E-, CCS120-, CCS120D-, CCS50-, CCS50D-, CCS51-, CCS51D-, CCS55D-, CCS58D-, CFS51-, CKF50-, CKI5 0-, CLS12-, CLS13-, CLS15-, CLS15D-, CLS15E-, CLS16-, CLS16D-, CLS16E-, CLS19-, CLS21-, CLS21D-, CLS21E-, CLS30-, CLS50-, CLS50D-, C LS54-, CLS54D-, CLS82D-, CLS82E-, COS22-, COS22D-, COS22E-, COS41-, COS51D-, COS51E-, COS61-, COS61D-, COS81D-, COS81E-, CPF201-, CP F81-, CPF81D-, CPF81E-, CPF82-, CPF82D-, CPF82E-, CPL51E-, CPS11-, CPS11D-, CPS11E-, CPS12-, CPS12D-, CPS12E-, CPS13-, CPS16D-, CPS1 6E-, CPS171D-, CPS21-, CPS31-, CPS31D-, CPS31E-, CPS341D-, CPS41-, CPS41D-, CPS41E-, CPS42-, CPS42D-, CPS42E-,CPS43-, CPS441-, CPS4 41D-, CPS471-, CPS471D-, CPS47D-, CPS491-, CPS491D-, CPS61E-, CPS62E-, CPS64-, CPS71-, CPS71D-, CPS71E-, CPS72-, CPS
Language:
Russian
Version:
11/10/2021
File size:
328.7 KB
File name:
EAEC N RU D-DE.PA01.B.15501_21.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-, CAS80E-, CCS120-, CCS120D-, CCS50-, CCS50D-, CCS51-, CCS51D-, CCS55D-, CCS58D-, CFS51-, CKF50-, CKI5 0-, CLL47E-, CLS12-, CLS13-, CLS15-, CLS15D-, CLS15E-, CLS16-, CLS16D-, CLS16E-, CLS19-, CLS21D-, CLS21E-, CLS30-, CLS50-, CLS50D-, CLS54-, CLS54D-, CLS82D-, COL37E-, COS22-, COS22D-, COS22E-, COS41-, COS51D-, COS51E-, COS61-, COS61D-, COS81D-, COS81E-, CPF201-, C PF81-, CPF81D-, CPF81E-, CPF82-, CPF82D-, CPF82E-, CPL51E-, CPL53E-, CPL57E-, CPL59E-, CPS11-, CPS11D-, CPS11E-, CPS12-, CPS12D-, CP S12E-, CPS13-, CPS16D-, CPS16E-, CPS171D-, CPS21-, CPS31-, CPS31D-, CPS31E-, CPS341D-, CPS41-, CPS41D-, CPS41E-, CPS42-, CPS42D-, CP S42E-, CPS43-, CPS441-, CPS441D-, CPS471-, CPS471D-, CPS47D-, CPS47E-, CPS491-, CPS491D-, CPS61E-, CPS62E-, CPS64-,
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: COS22E-, COS51E-, COS81E- Region: International (IECEx) Approval agency: IBExU Protection: Ex ia IIC T6...T3 Ga, 010~070 035 060 010|xxx
Language:
English
Version:
30/03/2021
File size:
877.7 KB
File name:
IECEx_IBE_20.0011X_001_signed.pdf
-
-
-
Explosion Protection
Product family: Memosens
Product root: COS22E-, COS51E-, COS81E- Region: Europe (ATEX) Approval agency: IBExU Category: II 1 D, II 1 G Protection: Ex ia IIC0IIC005, 005~070 035 060 010|xxx
EN 30/03/2021Language:
English
Version:
30/03/2021
File size:
2.1 MB
File name:
Scan_IBExU20ATEX1093X.pdf
-
-
-
Explosion Protection
Product family: Memosens
Product root: COS22E-, COS51E-, COS81E- Region: Brazil Approval agency: TÜV Category: zone 0, zone 20 Protection: Ex ia IIC T6...T3 Ga, Ex ia IIIC Txxx°C Da
Language:
Portuguese
Version:
17/02/2021
File size:
1.4 MB
File name:
TUV 21.0090 X issue 01.pdf
-
-
-
Explosion Protection
Product family: Memosens
Product root: COS81E- Region: China Approval agency: NEPSI Category: zone 0, zone 20 {ZMMM _E_PROTECTION}: 035070 020 050 005, zone 1,2 900 060 010
Language:
English
Version:
10/11/2021
File size:
2.1 MB
File name:
GYJ21.1074X Rev 1 COSxxE.pdf
-
-
-
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
-
-
-
Explosion Protection
Product family: Memosens
Product root: COS81E- Region: Japan Approval agency: CML Protection: Ex ia IIC T6...T3 Ga, 085 ~070 035 060 010|xxx
Language:
Japanese
Version:
21/10/2021
File size:
411.3 KB
File name:
CML 21JPN2324X JP Issue 1 .pdf
-
-
-
Explosion Protection
Product family: CeraGel, CeraLiquid, ConduMax W, Memosens, OrbiPore, OrbiSint, TopHit
Product root: CLS15D-, CLS15E-, CLS16E-, CLS21E-, CLS82D-, CLS82E-, COS22E-, COS51E-, COS81E-, CPS11D-, CPS11E-, CPS12D-, CPS12E-, C PS16E-, CPS31E-, CPS41D-, CPS41E-, CPS42D-, CPS42E-, CPS441D-, CPS471D-, CPS47D-, CPS47E-, CPS491D-, CPS61E-, CPS62E-, CPS71D-, CPS7 1E-, CPS72D-, CPS72E-, CPS76E-, CPS77D-, CPS77E-, CPS91D-, CPS91E-, CPS92D-,CPS92E-, CPS96E-, CPS97D-, CPS97E- Region: Eurasian Economic Union Approval agency: NANIO Protection: Ex e Cl. III Zone 0, Ex eZone 0, Ex e Zone 20
Language:
Russian
Version:
15/11/2021
File size:
5 MB
File name:
EAEC_RU_C-DE.AA87.B.0083321.pdf
-
-
-
Explosion Protection
Product family: Memosens, OxyMax W
Product root: COS51E- Region: Korea Approval agency: KTL Protection: Ex i Zone 0
Language:
Korean
Version:
18/06/2021
File size:
324.4 KB
File name:
21-KA4BO-0440X COS51E.pdf
-
-
-
Explosion Protection
Product family: Memosens
Product root: COS22E-, COS51E-, COS81E- Region: Great Britain Approval agency: CML Protection: Ex i Zone 0
Language:
English
Version:
25/11/2021
File size:
1.1 MB
File name:
CML 21UKEX2588X Iss. 0 with ATEX.pdf
-
5 products & bundles
5 products