Technical Data
CompareTotal Solids / Total Suspended Solids
| Measuring Principle | Absorption |
| Application | Absorption sensor for turbidity and suspended solids measurements in industrial wastewater and processes |
| Installation | Insitu (immersion in process or retractable assembly) |
| Design | 40 mm sensor |
| Dimension | 209.5 x 40 mm (8.25 x 1.57 inch) |
| Material | Sensor head: PCTFE Sensor shaft: 1.4571 stainless steel (316TI) or plastic (PPS GF40) O-ring: EPDM |
| Measuring range | 40 to 4 000 FAU 0 to 60 g/L suspended solids 0 to 10 OD |
| Process pressure | 0.5 to 4.5 bar (7.3 to 65.3 psi) absolute |
| Connection | G1, NPT3/4 |
| Ingress protection | IP68 |
Turbidity
| Measuring Principle | Absorption |
| Application | Absorption sensor for turbidity and suspended solids measurements in industrial wastewater and processes |
| Installation | Insitu (immersion in process or retractable assembly) |
| Measuring range | 40 to 4 000 FAU 0 to 60 g/L suspended solids 0 to 10 OD |
| Measuring principle | Absorption |
| Design | 40 mm sensor |
| 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) |
| 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 |
| Connection | G1, NPT3/4 |
| Ingress protection | IP68 |
The Turbimax CUS50D intelligent sensor is widely used in many industrial wastewater and process applications and measures without attenuation. The absorbance principle allows single-point calibration. Select the sensor by referring to various comprehensive analysis models to meet the specific application requirements of the user. With Memosens digital technology, the Turbimax CUS50D is easy to operate and offers the highest process safety and the highest data integrity. Corrosion-resistant and suitable for laboratory calibration.
Benefits
High measuring accuracy and repeatability ensure stable measurement results across the medium-to-high turbidity measuring range
High resistance to chemical corrosion and low maintenance workload: anti-fouling sensor head made of Teflon
The plastic sensor is robust and can measure in corrosive media or seawater
Fast and simple commissioning: the sensor is pre-calibrated for a wide range of applications and can be easily adjusted by single-point calibration
The fully automatic sludge measuring mode optimizes the signal channel selection for all types of sludge
Excellent process adaptability: can be installed in various Endress+Hauser mounting assemblies for rapid sensor positioning
Applications
The Turbimax CUS50D measures turbidity, suspended solids concentration and absorbance:
Industrial wastewater and utilities:
- Solids content measurement in process and wastewater sludge
- Determination of flocculant dosage by absorbance measurement
- Measurement of wastewater concentration in dairies
Process media:
Concentration measurement of process media, e.g. titanium dioxide
Highly absorbent media:
Concentration measurement of dark media, e.g. in the fourth cleaning stage of wastewater treatment plants
Spare Parts & Accessories 10
10 spare parts · click to collapse
| Order code | Description | |
|---|---|---|
| 71241882 | CUS52D: 2x chuck sealFor CUS50D, CUS52D, CUA252 and CUA262 | Details |
| 71242180 | blind coverFor CUS50D, CUS52D, CUA252 and CUA262 | Details |
| 71395617 | CUS50D spare parts, air cleaning head | Details |
| 71072583 | *** cleaning unit, 230V air compressor | Details |
| 71194623 | Output Air Purification | Details |
| 71400898 | CUS50D spare parts, solid-state reference accessory | Details |
| 71242201 | clamp ring | Details |
| 71361175 | CxS5xD Spare Parts: Threadlocker 20 ml | Details |
| 71420151 | Kit CYA251 sensor adapter CUS50D | Details |
| 71093377 | Mounting accessoriesfast sensor assembly | Details |
Configurator / Comparison
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Measurement principle video
Click to playSource: Endress+Hauserpublic information from the website
Manuals & Documents 4
All documents for this modelCase Studies
Municipal Wastewater Treatment · turbidity — Application Case
Project Background
The project covers the inlet, biological and outlet stages of a municipal plant. The work centres on turbidity and the core task is measuring turbidity as an indicator of suspended solids and filtration.
Operating Challenges
The medium and duty are characterised by high solids and corrosive fractions, with large diurnal flow swings, and effluent parameters drift and probes foul with sludge and biofilm. So turbidity cannot be specified generically — it calls for choosing 90° scatter or surface scatter by range, with de-bubbling.
Solution
The Ainstru engineering team worked through the analyser range: selecting as part of a complete water-analysis system. The configuration involves choosing 90° scatter or surface scatter by range, with de-bubbling, with these requirements in view: stable compliance with Grade 1A discharge limits and online data reporting.
Results
Since start-up the system has run steadily; the practical result is backwashing triggered by water quality, saving water while holding quality.
Food & Beverage · turbidity — Application Case
Project Overview
The site is dosing, pasteurising, filling and CIP stages. The customer wanted turbidity properly configured on the existing plant, with the aim of measuring turbidity as an indicator of suspended solids and filtration.
Technical Challenges
What actually causes trouble is syrups, dairy and beverages that scale easily, under strict hygienic requirements, and frequent cleaning demands instruments that withstand hot CIP/SIP caustic cycles. All of this means the turbidity configuration has to involve choosing 90° scatter or surface scatter by range, with de-bubbling.
Configuration
Supply and installation were organised through the analyser range: selecting as part of a complete water-analysis system. On site this meant choosing 90° scatter or surface scatter by range, with de-bubbling, checked line by line against: food-safety and hygienic design per 3-A / EHEDG.
Performance
After commissioning the outcome is backwashing triggered by water quality, saving water while holding quality, and the readings are now used for process tuning.
Chemical & Pharmaceutical · turbidity — Application Case
Site Conditions
This is a Chemical & Pharmaceutical customer whose plant is at reactors, metering vessels and finished-product tanks. The main task was measuring turbidity as an indicator of suspended solids and filtration.
The Problem
The difficulty lies in highly corrosive media with solvents and crystallisation, partly in explosive atmospheres; at the same time corrosion plus Ex protection shortens instrument life and makes downtime costly. Specification therefore means choosing 90° scatter or surface scatter by range, with de-bubbling.
What We Did
We took a analyser range approach — selecting as part of a complete water-analysis system. Delivery was built around choosing 90° scatter or surface scatter by range, with de-bubbling, with point-by-point checks on: Ex certification and GMP traceability of records.
Operating Outcome
In service the system performs as intended — backwashing triggered by water quality, saving water while holding quality, with routine maintenance falling noticeably.
Power & Energy · turbidity — Application Case
Application Context
boiler feedwater, turbine condensate and FGD/DeNOx systems is a typical Power & Energy duty. The project started from turbidity, focusing on measuring turbidity as an indicator of suspended solids and filtration.
Process Constraints
drift under high temperature and pressure, with very costly unplanned outages, and high temperature and pressure with both steam and saline water only amplify it. The turbidity specification must therefore cover choosing 90° scatter or surface scatter by range, with de-bubbling.
Delivery Approach
Delivery was handled as the analyser range — selecting as part of a complete water-analysis system. Execution centred on choosing 90° scatter or surface scatter by range, with de-bubbling, together with compliance with power-industry codes and unit availability targets.
Field Results
Operation shows the benefit clearly — backwashing triggered by water quality, saving water while holding quality, with confidence in this measuring point improving markedly.
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