Specs at a glance
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Measurement range
k=1: 10 µS/cm to 20 mS/cm
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Process temperature
-20 to 135 °C at 3.5 bar abs
(-4 to 275 °F at 50 psi) -
Process pressure
17 bar abs at 20 °C
(246 psi at 68 °F)
Field of application
Memosens CLS21E is a robust conductivity sensor for all water applications with medium conductivities. It provides you with precise and reliable measured values for optimum quality monitoring. The sensor is corrosion-free and features high mechanical stability ensuring a long operating life. Thanks to Memosens 2.0 digital technology, CLS21E combines maximum process and data integrity with simple operation. It facilitates predictive maintenance and provides the perfect basis for IIoT services.
Memosens CLS21E measures conductivity in all water applications, such as:
Potable water treatment
Desalination plants
Industrial water treatment
River/lake monitoring
With its international explosion protection approvals, such as ATEX, FM, CSA and NEPSI, the digital sensor is suitable for hazardous area use.
Benefits
Reliable and accurate measured values at medium conductivities ensure precise monitoring of water quality.
Robust design for long durability and low maintenance: The sensor is corrosion-free and features high mechanical and chemical stability.
Quality certificate stating the individual cell constant allows accurate measurement.
Non-contact inductive signal transmission ensure maximum process and data integrity.
Memosens 2.0 technology enables the sensor to store more process and calibration data. It lays the basis for IIoT services and predictive maintenance.
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Technical Information (TI)
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EN 24/02/2021Language:
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Version:
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File size:
967.5 KB
File name:
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Operating Instruction (BA)
BA Memosens CLS21E
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31 documents
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Technical Information (TI)
Memosens CLS21E
Digital conductivity sensor with Memosens technology
EN 24/02/2021Language:
English
Version:
24/02/2021
File size:
967.5 KB
File name:
TI01528CEN_0120.pdf
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Operating Instruction (BA)
BA Memosens CLS21E
Conductivity sensor with Memosens protocol
EN 20/04/202324/02/2021Language:
English
Version:
20/04/2023
File size:
649 KB
File name:
BA02020CEN_0223-00.pdf
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Ex Safety Instruction (XA)
Memosens CLS15E, CLS16E, CLS21E, CLS82E
Supplement to: BA02018C, BA02019C, BA02020C and BA02027C
Safety instructions for electrical apparatus in explosion-hazardous
areasEN 23/11/2020Language:
English
Version:
23/11/2020
File size:
352.8 KB
File name:
XA02078CEN_0120.pdf
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Ex Safety Instruction (XA)
XA Memosens CLS15E, CLS16E, CLS21E, CLS82E
Digital conductivity sensors with Memosens technology
CSA C/US IS Cl. 1 Div. 1 GP A-D T3/T4/T6 + CSA C/US IS Cl. 1 Zone 0 AEx
ia IIC T3/T4/T6EN 05/04/202431/05/2021Language:
English
Version:
05/04/2024
File size:
580 KB
File name:
XA02079CEN_0224-00.pdf
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Ex Safety Instruction (XA)
XA Memosens CLS15E, CLS16E, CLS21E, CLS82E
Digital conductivity sensors with Memosens technology
NEPSI Ex ia IIC T3/T4/T6 GaEN 08/04/202417/08/2021Language:
English
Version:
08/04/2024
File size:
591.8 KB
File name:
XA02543CEN_0224-00.pdf
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Ex Safety Instruction (XA)
XA Memosens CLS15E, CLS16E, CLS21E, CLS82E
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UK II 1 G Ex ia IIC T3/T4/T6 GaEN 11/03/202415/01/202231/05/2021Language:
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Version:
11/03/2024
File size:
492.9 KB
File name:
XA02553CEN_0324-00.pdf
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Ex Safety Instruction (XA)
Memosens CLS15E, CLS16E, CLS21E, CLS82E
Supplement to: BA02018C, BA02019C, BA02020C and BA02027C
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JPN Ex ia IIC T3/T4/T6 GaEN 19/08/2021Language:
English
Version:
19/08/2021
File size:
488.3 KB
File name:
XA02686CEN_0121.pdf
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Ex Safety Instruction (XA)
XA Memosens CLS15E, CLS16E, CLS21E, CLS82E
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KOR Ex ia IIC T6...T3 GaEN 25/03/202414/01/2022Language:
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Version:
25/03/2024
File size:
488.9 KB
File name:
XA02802CEN_0224-00.pdf
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Ex Safety Instruction (XA)
Memosens CLS15E, CLS16E, CLS21E, CLS82E
EAC Ex 0Ex ia IIC T3/T4/T6 Ga X
Safety instructions for electrical apparatus in explosion-hazardous
areasEN 21/09/2022Language:
English
Version:
21/09/2022
File size:
489.2 KB
File name:
XA02081CEN_0122-00.pdf
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Ex Safety Instruction (XA)
XA Memosens CLS15E, CLS16E, CLS21E, CLS82E
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ATEX: II 1 G Ex ia IIC T3/T4/T6 Ga
IECEx: Ex ia IIC T3/T4/T6 GaEN 13/03/202404/12/2020Language:
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Version:
13/03/2024
File size:
496.2 KB
File name:
XA02080CEN_0224-00.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)
Kompetenz in der Flüssigkeitsanalyse
Vom Sensor bis zur schlüsselfertigen Komplettlösung
Language:
German
Version:
21/09/2022
File size:
1.3 MB
File name:
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Fields of Activities (FA)
Expertise in liquid analysis
From sensors to complete turnkey solutions
Language:
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Version:
21/09/2022
File size:
1.2 MB
File name:
FA01018CEN_0422_Analysis_Portfolio_lowres.pdf
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AI (Application note)
Smart vertical farming in big cities
Cost-efficient and intuitive monitoring of nutrient supply
Language:
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Version:
25/11/2021
File size:
544.4 KB
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AI01343C_Smart vertical farming in big cities.pdf
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AI (Application note)
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Manufacturer Declaration
Product family: Memosens
Product root: CLS21E-
Declaration number: HE_01421_01.21
Manufacturer specification: RoHS
Additional information: China-RoHSLanguage:
Chinese
Version:
15/04/2021
File size:
351.8 KB
File name:
HE_01421_01.21_CLS21E_China-RoHS.pdf
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EU Declaration
Product family: Memosens
Product root: CLS15E-, CLS16E-, CLS21E-, CLS82E-
Declaration number: EC_00869_04.24EN 26/02/2024Language:
English
Version:
26/02/2024
File size:
193.7 KB
File name:
EC_00869_04.24_CLSxxE_nonEx.pdf
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EU Declaration
Product family: Memosens
Product root: CLS15E-, CLS16E-, CLS21E-, CLS82E-
Declaration number: EC_00870_01.20EN 09/01/2023Language:
English
Version:
09/01/2023
File size:
284.8 KB
File name:
EC_00870_02.23_CLSxxE_Ex.pdf
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UK Conformity Assessed
Product family: Memosens
Product root: CLS15E-, CLS16E-, CLS21E-, CLS82E-
Declaration number: UK_00280_01.21
Additional information: UKCA ExLanguage:
English
Version:
10/06/2021
File size:
343.2 KB
File name:
UK_00280_01.21_CLSxxE.pdf
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UK Conformity Assessed
Product family: Memosens
Product root: CLS15E-, CLS16E-, CLS21E-, CLS82E-
Declaration number: UK_00435_03.24Language:
English
Version:
26/02/2024
File size:
191.6 KB
File name:
UK_00435_03.23_CLSxxE.pdf
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