
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
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Turbidity is the cloudiness of a liquid caused by suspended particles. This video shows how turbidity measuring principles work.
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 |
---|---|---|
Fundamental selection Meet your basic measurement needs |
Technical excellence
|
Simplicity
|
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 |
Predecessor
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Measuring principle
Four beam alternating light
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Application
Wastewater, process water and primary water treatment applications.
Turbidity and suspended solids measurement at all stages of the wastewater treatment process and at primary water treatment applications with medium to high turbidities. -
Installation
Insitu (immersion in process or retractable holder), extractive with sample and flow cell
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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 -
Measuring principle
Scattered light in 90°/135° and 4beam cross light
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Design
40 mm sensor, stainless steel
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Material
Stainless steel 316L
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Dimension
194 mm x 40 mm
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Process temperature
Process temperature:
-5 to 50 °C (23 to 122 °F)
Ambient temperature:
-20 to 60 °C (-4 to 140 °F) -
Connection
G1, NPT3/4"
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Ingres protection
IP68 (1 m / 3.3 ft) water column with 1N KCl during 60 days
Configure to download the CAD drawings of this product
Choose from our suggested options
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Looking for more options? Please use the individual configurator to continue
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Looking for more options? Please use the individual configurator to continue
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Process Connection
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Prices per piece
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- Optional add-ons
Individual configuration
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