
Specs at a glance
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Measurement range
For formazin: 0 to 4000 FNU
Display range up to 9999 FNU
For sludge: 0 to 300 g/L
The achievable measuring range depends very much on the media -
Process temperature
Process temperature:
-5 to 50 °C (23 to 122 °F)
Ambient temperature:
-20 to 60 °C (-4 to 140 °F)
Field of application
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.
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 outletDrinking and process water:
- Solids content measurement in sludge treatment
- Flocculent dosingUtilities 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.
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Perfect process adaption: Fast sensor positioning with holder and assembly system Flexdip CYA112 and CYH112.
Videos
Extended selection
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High-end products
- Highly functional and convenient
Technical excellence
Simplicity

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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 |
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Fundamental selection Meet your basic measurement needs |
Technical excellence
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Simplicity
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Lean selection Handle your core processes easily |
Technical excellence
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Simplicity
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Extended selection Optimize your processes with innovative technologies |
Technical excellence
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Simplicity
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Xpert selection Master your most challenging applications |
Technical excellence
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Simplicity
Variable |
Predecessor
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Technical Information (TI)
Turbimax CUS51D Technical Information
English version - 01/2019
Sensor for turbidity and solids content
EN 01/12/202231/01/201909/03/201803/03/201408/02/2012Language:
English
Version:
31/01/2019
File size:
1.2 MB
File name:
TI00461CEN_1719.pdf
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Technical Information (TI)
Turbimax CUS51D
Sensor for turbidity and solids content
EN 01/12/202231/01/201909/03/201803/03/201408/02/2012Language:
English
Version:
01/12/2022
File size:
1.1 MB
File name:
TI00461CEN_1822-00.pdf
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Operating Instruction (BA)
Turbimax CUS51D
Sensor for turbidity and solids content
EN 01/12/202231/01/201930/06/201830/07/201709/07/2013Language:
English
Version:
01/12/2022
File size:
1.5 MB
File name:
BA00461CEN_1922-00.pdf
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Operating Instruction (BA)
Operating Instructions - Compressed air cleaning unit - 115VAC
Operating Instructions - Compressed air cleaning unit - 115VAC
Language:
English
Version:
29/01/2013
File size:
1.8 MB
File name:
BA00498CEN_0113.pdf
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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
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Fields of Activities (FA)
Esperti nell’analisi dei liquidi
Dai sensori singoli a soluzioni complete “chiavi in mano”
Language:
Italian
Version:
12/01/2017
File size:
3.9 MB
File name:
FA01018CIT_02.16.pdf
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Fields of Activities (FA)
Jistota v analýze kapalin
Od senzorů po kompletní dodávku na klíč
Language:
Czech
Version:
12/01/2017
File size:
740.3 KB
File name:
Analyza_FA01018Ccs_0216.pdf
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Fields of Activities (FA)
Catálogo Portfolio Analítica
Desde sensores hasta soluciones completas
Language:
Spanish
Version:
12/01/2017
File size:
1.5 MB
File name:
FA01018CES_Portfolio_Analitica_0216.pdf
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Competence Brochure (CP)
Aus Freude an gutem Wasser
Frische Ideen für Wasserwerke, Verteilernetze,Oberflächenwasser und Industrieanlagen
Language:
German
Version:
17/06/2020
File size:
3.2 MB
File name:
CP01335CDE_0119_Kompetenz in Wasser.pdf
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Competence Brochure (CP)
Damit Ihre Kläranlage läuft und läuft und läuft
Effizienz und Effektivität in der Abwasseraufbereitung
Language:
German
Version:
03/08/2018
File size:
3.4 MB
File name:
CP01197CDE_0118_Damit Ihre Kläranlage läuft.pdf
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Competence Brochure (CP)
Making sure your WWTP runs and runs and runs
Efficient and effective wastewater treatment
Language:
English
Version:
03/08/2018
File size:
3.5 MB
File name:
CP01197CEN_0118_Making sure your WWTP runs.pdf
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Competence Brochure (CP)
For the love of quality water
Fresh ideas for waterworks, distribution networks, surface waters and industrial plants.
Language:
English
Version:
17/06/2019
File size:
3.2 MB
File name:
CP01335CEN_0119_Competence in water.pdf
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Case Study (CS)
Process automation worth its weight in gold
Memosens pH sensors improve processes at Agnico Eagle
Language:
English
Version:
01/07/2016
File size:
1.5 MB
File name:
CS01496CEN_0116_Agnico Eagle goldmine.pdf
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Case Study (CS)
Improved thickener operation at Minera Valle Central
Improved thickener operation at Minera Valle Central Online interface and turbidity measurement with CUS71D and CUS52D
EN 30/05/2022Language:
English
Version:
30/05/2022
File size:
720.2 KB
File name:
CS01741C40EN01.22_Improved thickener operation at Minera Valle Central.pdf
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Case Study (CS)
L’automatisation des process vaut son pesant d’or
Memosens Les sondes de pH améliorent les process chez Agnico Eagle
Language:
French
Version:
01/07/2016
File size:
673.1 KB
File name:
CS01496CFR-0216-Agnico Eagle.pdf
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Case Study (CS)
Prozessautomatisierung, die Gold wert ist
Memosens pH-Sensoren verbessernProzesse bei Agnico Eagle
Language:
German
Version:
01/07/2016
File size:
1.5 MB
File name:
CS01496CDE_0116_Agnico Eagle Goldmine.pdf
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AI (Application note)
Régulation de l’aération sûre et économique
L’analyse en ligne permet d’améliorer les performances
Language:
French
Version:
31/01/2014
File size:
1 MB
File name:
AI01032XFR-0114-Aeration-control.pdf
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EU Declaration
Product family: Turbimax
Product root: CUS51D- Declaration number: EC_00155_02.16
EN 14/11/2022Language:
English
Version:
14/11/2022
File size:
317.2 KB
File name:
EC_00155_03.22.pdf
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UK Conformity Assessed
Product family: Turbimax
Product root: CUS51D- Declaration number: UK_00311_01.21
Language:
English
Version:
15/11/2022
File size:
316.6 KB
File name:
UK_00311_01.21.pdf
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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-, CCS120-, CCS120D-, CCS50-, CCS50D-, CCS51-, CCS51D-, CCS55D-, CCS58D-, CFS51-, CKF50-, CKI50-, CLS12 -, CLS13-, CLS15-, CLS15D-, CLS16-, CLS16D-, CLS19-, CLS21D-, CLS30-, CLS50-, CLS50D-, CLS54-, CLS54D-, CLS82D-, COS22-, COS22D-, CO S41-, COS51D-, COS61-, COS61D-, COS81D-, CUS50D-, CUS51D-, CUS52D-, CVF52-, CVI52-, OUSAF11-, OUSAF12-, OUSAF21-, OUSAF22-, OUSAF44- , OUSAF46-, OUSBT66-, OUSTF10- Region: Eurasian Economic Union Approval agency: EAC Approval number: EAEC N RU D-DE.PA05.B.03690_22
Language:
Russian
Version:
26/07/2022
File size:
338.6 KB
File name:
EAEC N RU D-DE.PA05.B.03690_22.pdf
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Metrology
Product family: Liquiline, Turbidity and total suspended solids, Turbimax
Product root: CM44P-, CUS51D-, CUS52D-, OUSTF10- Region: China
Language:
Chinese
Version:
18/10/2016
File size:
2.6 MB
File name:
CM44P+OUSTF10、CUS51D、CUS52D PAC证书.pdf
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