Memosens COS51E: digital, amperometric oxygen sensor

Digital oxygen sensor
Memosens COS51E

Memosens 2.0 amperometric oxygen sensor for the wastewater industry and utilities

COS51E

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Memosens COS51E: Memosens sensor for the wastewater industry and utilities

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)

See all specifications

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 monitoring
Utilities of all industries:
- O₂ control in the biological treatment
- Process water treatment and monitoring
Water 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

The concentration of oxygen dissolved in a liquid can be measured using the amperometric or optical measuring principles. This video shows what it is about and how these measuring principles work.
Memosens converts the measured value to a digital signal and transfers it to the transmitter without a contacting connection. This video shows how Memosens optimizes process control and maintenance.

Memosens 2.0: Cutting-edge sensor technology reloaded

Make life easier, increase process safety and stay connected with Memosens 2.0 digital technology.
- More information
Smart instrumentation through Heartbeat Technology

You want to increase plant performance and reduce costs? Our smart instrumentation portfolio with Heartbeat Technology offers in-depth device insight for more cost-efficiency and operational safety.
- More information

Extended selection

High-end products
Highly functional and convenient

Technical excellence

Simplicity

What is FLEX?

Simple products
Easy to select, install and operate

Technical excellence

Simplicity

What is FLEX?

Standard products
Reliable, robust and low-maintenance

Technical excellence

Simplicity

What is FLEX?

High-end products
Highly functional and convenient

Technical excellence

Simplicity

What is FLEX?

Specialized products
Designed for demanding applications

Technical excellence

Simplicity

Variable

What is FLEX?

FLEX selections	Technical excellence	Simplicity
F L E X Fundamental selection Meet your basic measurement needs	Technical excellence	Simplicity
F L E X Lean selection Handle your core processes easily	Technical excellence	Simplicity
F L E X Extended selection Optimize your processes with innovative technologies	Technical excellence	Simplicity
F L E X Xpert selection Master your most challenging applications	Technical excellence	Simplicity Variable

Learn more about the FLEX selections

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Predecessor

Oxymax W COS51D

Success stories

50% less precipitant - 100% reliability and cooperation

IDEA achieved tremendous cost savings through continous monitoring with the CA80PH Analyzer at their site in Wallonia
Read the full story
An automated system for pH measurements at AVR

AVR Waste in Botlek, Rotterdam, processes up to 1.7 million tons of residual waste per year. Discover how they optimized their pH measurement thanks to Endress+Hauser
Read the full story
Safe phosphate elimination with minimal effort

Thanks to Endress+Hauser the Wastewater treatment plant in Breuberg meets legal requirements and ensures safe phosphate elimination.
Read the full story
Toilet flushing with a fresh sea breeze

Using seawater to flush toilets can save a lot of drinking water. To ensure a constant water supply, the sensors used must function reliably to meet the water quality objectives (WQO).
Read the full story
Monitoring biological parameters in wastewater

Examination of wastewater, using the Liquistation CSF48 and the Liquiport CSP48 mobile, can provide valuable information about the occurrence of Covid 19 infections in a specific area
Read the full story

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Related topics
Memosens 2.0: Cutting-edge sensor technology reloaded

Make life easier, increase process safety and stay connected with Memosens 2.0 digital technology.
More information

Measuring principle

Amperometric oxygen measurement
Application

Typical applications are:
- Wastewater treatment plants: oxygen control in aeration basin, process water treatment and monitoring
.
- Water plants: status monitoring of drinking water, water quality monitoring in rivers, lakes or seas
.
- Utilities of all industries: Oxygen control in biological treatment, process water treatment and monitoring.
Characteristic

Digital amperometric 3-electrode longterm-stable sensor to measure dissolved oxygen
Measurement range

0.01 to 100 mg/l
0.00 to 1000 %SAT
0 to 2000 hPa
Measuring principle

Measuring principle
Design

Design
Material

Sensor shaft: POM
Membrane cap: POM
Working electrode: Gold
Counter and reference electrode: silver/silver halide
Membrane: ETFE (COS51-TN), FEP (COS51-TF)
Dimension

Diameter: 40mm (1.57 inch)
Shaft length: 146 mm (5.74 inch)
Process temperature

-5 to 60 °C
(20 to 140 °F)
Process pressure

Max. 5 bar abs
(Max. 72.5 psi abs)
Temperature sensor

NTC 30k
Ex certification

With ATEX, IECEx, CSA C/US, NEPSI, JapanEx and INMETRO approval for use in Zone 0, Zone 1 and Zone 2 hazardous areas. With CSA
C/US approval also in Class I Division 1 hazardous areas in the
Gas Ex area. Additionally suitable for Class I Division 2.
Connection

Inductive, contactless connection head with Memosens 2.0 technology
Ingress protection

IP 68

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Digital oxygen sensorMemosens COS51E

Memosens 2.0 amperometric oxygen sensor for the wastewater industry and utilities

Specs at a glance

Measurement range

Process temperature

Process pressure

Field of application

Benefits

Videos

Memosens 2.0: Cutting-edge sensor technology reloaded

Smart instrumentation through Heartbeat Technology

Extended selection

Predecessor

Success stories

50% less precipitant - 100% reliability and cooperation

An automated system for pH measurements at AVR

Safe phosphate elimination with minimal effort

Toilet flushing with a fresh sea breeze

Monitoring biological parameters in wastewater

Could also interest you

Memosens 2.0: Cutting-edge sensor technology reloaded

Measuring principle

Application

Characteristic

Measurement range

Measuring principle

Design

Material

Dimension

Process temperature

Process pressure

Temperature sensor

Ex certification

Connection

Ingress protection

Back

Memosens COS51E

Memosens COS51E

Memosens COS51E

Memosens COS51E

Memosens COS51E

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Sıvı analizinde uzmanlık

Kompetenz in der Flüssigkeitsanalyse

Expertise in liquid analysis

COV45-41TNx_51Txx (India)

COV45-41TNx_51Txx (Italy)

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COV45-41TNx_51Txx (France)

COV45-41TNx_51Txx (Greece)

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COV45-41TNx_51Txx (Norway)

COV45-41TNx_51Txx (Portugal)

COV45-41TNx_51Txx (New Zealand)

COV45-41TNx_51Txx (Latvia)

COV45-41TNx_51Txx (Mexico)

COV45-41TNx_51Txx (Canada (French))

COV45-41TNx_51Txx (Belgium (Dutch))

COV45-41TNx_51Txx (Belgium)

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Kit COSxx Protection cage Standard

Kit COSxx Protection cage 8,5 mm holes

Kit COSxx Protection cage Fish farming

COV45 maintenance kits COS41/COS51x

Zero-point gel COY8

Cleaning head COS61/61D, 6 or 8mm

Cleaning head COS61/61D 1/4"

Calibration cap, COS31/41/61/51D/61D//71

Cleaning unit, 230 V

115 VAC 2 output compr.air cleaning unit

Input

Digital oxygen sensor
Memosens COS51E