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Specs at a glance
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Measuring range
Ammonium:
0 to 1000 mg/l (NH4-N)
Nitrate:
0 to 1000 mg/l (NO3-N)
Potassium:
1 to 1000 mg/l
Chloride:
1 to 1000 mg/l -
Process temperature
2 °C to 40°C
(36 to 104 °F) -
Process pressure
500 mbar (200 in H₂O) max. permitted over pressure
Field of application
The Memosens CAS41E ISE sensor provides cost-effective, continuous measurement of ammonium, nitrate, potassium or chloride for reliable control of nitrification and denitrification processes. It helps reduce aeration-related energy consumption and supports stable and efficient wastewater treatment within limits. Its smart calibration concept, based on automated evaluation and multipoint in-process calibration, enables continuous sensor optimization with reduced maintenance effort.
Designed for biological wastewater treatment applications, particularly in aeration tanks at municipal wastewater treatment plants. It can also be used in selected industrial wastewater treatment and surface water monitoring applications.
Benefits
Compact multiparameter sensor for efficient monitoring: three configurable electrode slots enable flexible combinations of measurement and compensation electrodes in a single sensor, reducing installation effort and system complexity.
Direct in-process installation with fully sealed design: supports real-time monitoring and dynamic process optimization using Memosens technology.
Modular configuration with freely assignable slots: allows individual sensor configuration and easy adaptation to new measurement tasks at any time.
Easy electrode replacement for simplified maintenance: allows quick and uncomplicated replacement of individual electrodes.
Smart multipoint in-process calibration for reliable operation: supports continuous sensor optimization through automated evaluation, integrated self-assessment and in-process calibration without process interruption.
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Success stories
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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
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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 |
13 documents
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Operating Instruction (BA)
BA Memosens CAS41E
ISE sensor for the continuous measurement of ammonium, nitrate, potassium and chloride
EN 21/07/2026Language:
English
Version:
21/07/2026
File size:
1.7 MB
File name:
BA02619CEN_0126-00.pdf
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Installation Instructions (EA)
EA Memosens CAS41E
Combined spare parts instructions
EN 20/07/2026Language:
English
Version:
20/07/2026
File size:
611.4 KB
File name:
EA01842CEN_0126-00.pdf
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Installation Instructions (EA)
EA Memosens CAS41E
Wear parts
EN 01/07/2026Language:
English
Version:
01/07/2026
File size:
849.1 KB
File name:
EA01756CEN_0126-00.pdf
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Innovation (IN)
Real-time data for stable processes
Memosens CAS41E provides compact,
continuous measurement for wastewater
and water applications.Language:
English
Version:
13/08/2026
File size:
5.6 MB
File name:
IN01481CEN_Memosens_CAS41E_Real-time_data_for_stable_processes_eBrochure.pdf
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Innovation (IN)
Echtzeitdaten für stabile Prozesse
Memosens CAS41E ermöglicht kompakte
und kontinuierliche Messungen in
Abwasser- und WasseranwendungenEN 10/06/2026Language:
English
Version:
10/06/2026
File size:
5.6 MB
File name:
IN01481CDE_Memosens_CAS41E_Echtzeitdaten_fuer_stabile_Prozesse_eBrochure.pdf
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Manufacturer Declaration
Product family: Memosens
Product root: CAS41E-
Declaration number: ЕАЭС KZ.7500525.13.12.10690
Manufacturer specification: EMCLanguage:
Russian
Version:
04/08/2026
File size:
1.1 MB
File name:
EAC KZ.7500525.13.12.10690.pdf
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Manufacturer Declaration
Product family: Memosens
Product root: CAS41E-
Declaration number: HE_02300_01.26
Manufacturer specification: Operating conditions
Additional information: MTBFLanguage:
English
Version:
27/07/2026
File size:
93.9 KB
File name:
HE_02300_01.26_CAS41E_MTBF_sign_.pdf
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Manufacturer Declaration
Product family: Memosens
Product root: CAS41E-
Declaration number: HE_02335_01.26
Manufacturer specification: RoHS
Additional information: China-RoHSEN 12/05/2026Language:
English
Version:
12/05/2026
File size:
390.8 KB
File name:
HE_02335_01.26_CAS41E.pdf
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EU Declaration
Product family: Memosens
Product root: CAS41E-
Declaration number: EU_01279_01.26EN 14/07/2026Language:
English
Version:
14/07/2026
File size:
200.8 KB
File name:
EU_01279_01.26 CAS41E_nonEx unterschrieben.pdf
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UK Conformity Assessed
Product family: Memosens
Product root: CAS41E-
Declaration number: UK_00604_01.26EN 14/07/2026Language:
English
Version:
14/07/2026
File size:
196.8 KB
File name:
UK_00604_01.26 CAS41E nonEx unterschrieben.pdf
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Often bought together
Accessories
- Kit CAS41E air purge w/ clean. cage
