
Specs at a glance
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Measurement range
40 to 4 000 FAU
0 to 60 g/L suspended solids
0 to 10 OD -
Process temperature
Process temperature -20 to 85 °C (-4 to 185 °F)
Ambient temperature -20 to 60 °C (-4 to 140 °F) -
Process pressure
0.5 to 4.5 bar (7.3 to 65.3 psi) absolute
Field of application
Turbimax CUS50D is a smart sensor that allows unattended operation in a wide range of industrial wastewater and process applications. Its absorption principle enables single-point-calibration. Choose from different integrated analytical models to adapt the sensor to your specific application. With Memosens digital technology, Turbimax CUS50D combines maximum process and data integrity with simple operation. It resists corrosion and enables lab calibration.
Turbimax CUS50D measures turbidity, suspended solids and absorption in:
Industrial wastewater and utilities:
- Measurement of the solids content in process and wastewater sludge
- Flocculent dosing via absorption measurement
- Concentration measurement of milk products in wastewaterProcess media:
Concentration measurement of process media, e.g. titanium dioxideHighly absorptive media:
Concentration measurement in very dark media, e.g. in the 4th cleaning step of sewage treatment plants
Benefits
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High level of measurement accuracy and repeatability for stable measurements – in the middle and high turbidity measuring range
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High chemical resistance, low maintenance required: Sensor head consists completely of a dirt-repellent Teflon derivative.
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The robust plastic version of the sensor is designed for the use in corrosive media or saltwater.
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Fast and easy commissioning: Sensor comes pre-calibrated, includes various application models and can easily be adjusted via single-point-calibration.
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Automatic sludge model independently selects the optimum signal path for every sludge type.
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Perfect process adaption: Fast sensor positioning with a large variety of Endress+Hauser assemblies.
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 |
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Measuring principle
Absorption
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Application
Absorption sensor for turbidity and suspended solids measurements in industrial wastewater and processes
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Installation
Insitu (immersion in process or retractable assembly)
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Measurement range
40 to 4 000 FAU
0 to 60 g/L suspended solids
0 to 10 OD -
Measuring principle
Absorption
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Design
40 mm sensor
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Material
Sensor head: PCTFE
Sensor shaft: 1.4571 stainless steel (316TI) or plastic (PPS GF40)
O-ring: EPDM -
Dimension
209.5 x 40 mm (8.25 x 1.57 inch)
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Process temperature
Process temperature -20 to 85 °C (-4 to 185 °F)
Ambient temperature -20 to 60 °C (-4 to 140 °F) -
Process pressure
0.5 to 4.5 bar (7.3 to 65.3 psi) absolute
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Connection
G1, NPT3/4
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Ingres protection
IP68
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