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Suspended solids sensor Turbimax CUS51D

Memosens sensor for suspended solids and turbidity measurement in water, wastewater and utilities

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Suspended solids sensor Turbimax CUS51D

Memosens sensor for suspended solids and turbidity measurement in water, wastewater and utilities

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Benefits

  • One sensor for all applications: The 'one for all' principle optimizes stockholding, speeds up project handling and simplifies life cycle management.
  • Optimum adaption to all measuring tasks: Sensor fits all measuring ranges thanks to numerous integrated analytical models.
  • Fast and easy commissioning: Sensor comes precalibrated and preconfigured ex factory.
  • Enables unattended plant operation: Intelligent design enables sophisticated self-cleaning capabilities and minimizes maintenance.
  • Perfect process adaption: Fast sensor positioning with holder and assembly system Flexdip CYA112 and CYH112.
FLEXible answers to individual needs
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Suspended solids sensor Turbimax CUS51D

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Extended selection Optimize your processes with innovative technologies
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Manufacturer's warranty

Engineered for confidence

Our instruments are designed for long‑lasting performance, precise measurement, and dependable operation in demanding industrial environments. Each product includes a standard manufacturer’s warranty that reflects our commitment to quality and to the trust you place in our solutions.

Should a warranty case occur, the device will be assessed and the applicable remedy will be provided in line with the warranty terms – helping ensure a reliable and efficient resolution and supporting continued operation of your measurement point.

Request for extended warranty

If you require extended warranty coverage, simply contact your local Endress+Hauser representative. Our experts will advise you on the available options to match your application and risk profile, helping you protect your investment, reduce unexpected repair costs, and ensure reliable long‑term operation beyond the manufacturer's warranty period.

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Warranty terms apply

The manufacturer's warranty and extended warranty are subject to specific conditions. For full details, please refer to the locally applicable General Terms and Conditions (GTC), which can be found on the respective country page of our website.

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Right‑first‑time commissioning, worldwide

Endress+Hauser’s qualified service engineers ensure your measurement devices are commissioned right the first time, delivering application‑aligned accuracy, regulatory compliance, and operational confidence from startup onwards, anywhere in the world.

Remote support you can trust wherever you operate

With Endress+Hauser Smart Support, you benefit from faster issue resolution, higher uptime, reliable global expertise across the entire product lifecycle – and lasting peace of mind.

Committed to long‑term, sustainable performance

With deep field expertise, harmonized processes, and continuous monitoring, we accompany you with comprehensive service offerings – from initial start‑up through instrumentation maintenance to process optimization – as a true lifetime partner delivering improved outcomes.

For additional information, please contact your local Endress+Hauser representative.

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Product information

Turbimax CUS51D is a smart suspended solids sensor for unattended operation in water and wastewater.
Digital suspended solids sensor
Specifications
Total Solids / Total Suspended Solids
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Description

Turbimax CUS51D is a smart sensor that allows unattended operation in a wide range of process conditions. Its unique design is extremely robust and it is also low-maintenance thanks to its self-cleaning functionality. Choose from different integrated analytical models to adapt the sensor to your specific application. With Memosens digital technology, the CUS51D combines maximum process and data integrity with simple operation. It resists corrosion and moisture and enables lab calibration.

Field of application

Turbimax CUS51D measures suspended solids and turbidity in:

  • Wastewater treatment plants: - Solids content measurement in aeration, recirculation and sludge treatment - Flocculent dosing - Turbidity measurement in the outlet
  • Drinking and process water: - Solids content measurement in sludge treatment - Flocculent dosing
  • Utilities of all industries: - Solids content measurement in aeration, recirculation and sludge treatment - Flocculent dosing
Benefits
  • One sensor for all applications: The 'one for all' principle optimizes stockholding, speeds up project handling and simplifies life cycle management.
  • Optimum adaption to all measuring tasks: Sensor fits all measuring ranges thanks to numerous integrated analytical models.
  • Fast and easy commissioning: Sensor comes precalibrated and preconfigured ex factory.
  • Enables unattended plant operation: Intelligent design enables sophisticated self-cleaning capabilities and minimizes maintenance.
  • Perfect process adaption: Fast sensor positioning with holder and assembly system Flexdip CYA112 and CYH112.
Predecessors
Turbimax W CUS41, Turbimax CUS65
Downloads
Most downloaded
Technical Information (TI)
TI Turbimax CUS51D Sensor for turbidity and solids content
English version - 11/2025
Download
Operating Instruction (BA)
BA Turbimax CUS51D Sensor for turbidity and solids content
English version - 11/2025
Download
Operating Instruction (BA)
Operating Instructions - Compressed air cleaning unit - 115VAC Operating Instructions - Compressed air cleaning unit - 115VAC
English version - 01/2013
Download
The CAD Drawings will be available after the configuration.
All downloads
36 Downloads
Technical Information (TI)
Most downloaded
TI Turbimax CUS51D Sensor for turbidity and solids content
English version - 11/2025
Download
Operating Instruction (BA)
Most downloaded
BA Turbimax CUS51D Sensor for turbidity and solids content
English version - 11/2025
Download
Operating Instruction (BA)
Operating Instructions - Compressed air cleaning unit - 115VAC Operating Instructions - Compressed air cleaning unit - 115VAC
English version - 01/2013
Download
Installation Instructions (EA)
EA CYR51 mechanical cleaning Spare parts kits
English version - 04/2026
Download
Fields of Activities (FA)
Sensors, transmitters, compact devices and assemblies Experts in Liquid Analysis
English version - 02/2026
Download
Fields of Activities (FA)
Esperti nell’analisi dei liquidi Dai sensori singoli a soluzioni
complete “chiavi in mano”
Italian version - 01/2017
Download
Fields of Activities (FA)
Kompetenz in der Flüssigkeitsanalyse Vom Sensor bis zur schlüsselfertigen Komplettlösung
German version - 09/2022
Download
Fields of Activities (FA)
水質分析の専門知識 センサからすべてを備えた
ターンキーソリューションまで
Japanese version - 06/2025
Download
Fields of Activities (FA)
Catálogo Portfolio Analítica Desde sensores hasta soluciones completas
Spanish version - 01/2017
Download
Fields of Activities (FA)
Sıvı analizinde uzmanlık Sensörlerden komple anahtar teslim çözümlere
Turkish version - 11/2023
Download
Fields of Activities (FA)
Expertise in liquid analysis From sensors to complete turnkey solutions
English version - 09/2022
Download
Fields of Activities (FA)
Sensoren, Messumformer, Kompaktgeräte and Armaturen Kompetenz in der Flüssigkeitsanalyse
German version - 02/2026
Download
Fields of Activities (FA)
Jistota v analýze kapalin Od senzorů po kompletní dodávku na klíč
Czech version - 01/2017
Download
Fields of Activities (FA)
Sensori, trasmettitori, dispositivi compatti e armature Sensori, trasmettitori,
dispositivi compatti e armature
Esperti in materia di analisi dei
liquidi
Italian version - 06/2026
Download
Fields of Activities (FA)
Endress+Hauser 水質分析計ファミリ ラインナップと事例
Japanese version - 03/2017
Download
Competence Brochure (CP)
良質な水のために 上水道、配水網、地表水、工業プラント向けの斬新なアイデア
Japanese version - 05/2025
Download
Competence Brochure (CP)
Aus Freude an gutem Wasser Frische Ideen für Wasserwerke, Verteilernetze, Oberflächenwasser und
Industrieanlagen
German version - 07/2023
Download
Competence Brochure (CP)
Making sure your WWTP runs and runs and runs Efficient and effective wastewater treatment
English version - 08/2018
Download
Competence Brochure (CP)
For the love of quality water Fresh ideas for waterworks, distribution networks, surface waters and
industrial plants.
English version - 07/2023
Download
Case Study (CS)
Verbesserter Einsatz von Eindickmittel bei Minera Valle Central Online Trennschichtmessung und Trübungsmessung mit
Turbimax CUS71D und CUS52D
German version - 08/2022
Download
Case Study (CS)
Prozessautomatisierung, die Gold wert ist Memosens pH-Sensoren verbessern Prozesse bei Agnico Eagle
German version - 07/2016
Download
Case Study (CS)
L’automatisation des process vaut son pesant d’or Memosens Les sondes de pH améliorent les process chez Agnico Eagle
French version - 07/2016
Download
Case Study (CS)
Process automation worth its weight in gold Memosens pH sensors improve processes at Agnico Eagle
English version - 07/2016
Download
AI (Application note)
Régulation de l’aération sûre et économique L’analyse en ligne permet d’améliorer les performances
French version - 01/2014
Download

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Spare parts and accessories

further parts
further parts

Spare and wear parts CYR51

further parts
further parts
Order code XPC0031-

Cleaning head CUS51D 6 or 8mm

Order code 71110782

Cleaning head CUS51D 1/4"

Order code 71110783

Cleaning unit, 230 V

Order code 71072583
Spare parts and accessories
Turbimax CUS51D is a smart suspended solids sensor for unattended operation in water and wastewater.
Digital suspended solids sensor

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Turbimax CUS51D is a smart suspended solids sensor for unattended operation in water and wastewater.
Digital suspended solids sensor
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Spare parts and accessories

further parts
further parts

Spare and wear parts CYR51

further parts
further parts
Order code XPC0031-

Cleaning head CUS51D 6 or 8mm

Order code 71110782

Cleaning head CUS51D 1/4"

Order code 71110783

Cleaning unit, 230 V

Order code 71072583
Spare parts and accessories

Selection of compatible products

/