Endress+Hauser CUS52D-AA1AA3 | Memosens Turbidity/Nephelometric Sensor, 0-4000 NTU
Endress+Hauser CUS52D-AA1AA3 digital nephelometric turbidity sensor. Memosens 2.0, 0-4000 NTU range, 90° scattered light ISO 7027, IP68, for wastewater & drinking water.
Product Overview
The Endress+Hauser CUS52D-AA1AA3 is a digital nephelometric turbidity sensor from the ViSolid CUS52D series, compliant with ISO 7027 (90° scattered light method). It measures suspended solids and turbidity in water and wastewater with a range of 0–4000 NTU (FNU). Featuring Memosens 2.0 digital technology, it offers contactless signal transmission, lab calibration capability, and integrated sensor diagnostics. The sensor is rated IP68 for continuous submersion and is suitable for both drinking water monitoring and demanding wastewater applications.
Technical Specifications (Measurement & Electrical)
| Parameter | Specification |
| Model / Order Code | CUS52D-AA1AA3 |
| Measuring Principle | Nephelometric (90° Scattered Light) per ISO 7027 |
| Measured Variable | Turbidity (NTU / FNU / mg/L TSS*) |
| Measuring Range | 0.001 … 4000 NTU (FNU) |
| Resolution | 0.001 NTU (< 9.99 NTU), 0.01 NTU (10–99.9 NTU), 0.1 NTU (> 100 NTU) |
| Technology | Memosens 2.0 (Digital, Inductive) |
| Integrated Sensor | Pt1000 (Temperature Compensation) |
| Connection | Memosens Inductive Plug (C8Y) |
Technical Specifications (Mechanical & Process)
| Parameter | Specification |
| Sensor Body Material | POM / Stainless Steel 316L (depending on variant) |
| Process Connection | G1" / NPT 1" (Male Thread — check order code detail) |
| Immersion Length | ~200 mm (typical with protection guard) |
| Process Temperature | 0 … +50 °C (non-freezing) |
| Process Pressure | ≤ 10 bar |
| Protection Rating | IP68 (Submersible) |
| Wiper / Cleaning | Not included (CUS51D has wiper; CUS52D is simpler version) |
*TSS correlation requires site-specific calibration.
Key Features
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ISO 7027 Compliance: Uses 90° scattered light for accurate low-range turbidity measurement per international drinking water standards.
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Memosens 2.0 Digital: Inductive coupling prevents corrosion and stores calibration data, sensor ID, and diagnostics in the sensor head — enables lab pre-calibration and plug-and-play replacement.
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Wide Dynamic Range: From 0.001 NTU (drinking water clarity) up to 4000 NTU (raw wastewater), covering the full treatment train in a single device.
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Robust Submersible Design: IP68-rated housing allows continuous immersion in open channels, tanks, or flow cells without additional enclosures.
Applications
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Drinking Water Treatment: Final water clarity monitoring post-filtration and post-disinfection.
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Wastewater Treatment: Raw influent turbidity, clarifier effluent, and final effluent compliance monitoring.
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Industrial Process Water: Turbidity monitoring in cooling towers, RO pre-treatment, and rinse water loops.
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Surface Water Monitoring: Environmental monitoring of rivers and lakes for sediment load assessment.
About ACH
Founded in 2012, ACH is a top-tier distributor of industrial automation products, supplying genuine devices from leading brands like ABB, P+F, E&H, AB, MTL to emerging markets worldwide. Our mission is to provide 100% Genuine products at the most competitive prices, helping customers reduce costs and strengthen their market position.
Frequently Ask & Questions
Are preferential prices available?
Long-term brand partners can get competitive product prices. At the same time, ACH controls the profit per order to 5%, providing the most competitive prices.
Are the Products Genuine OEM Units?
Yes, all products from ACH are certified genuine OEM units. We acquire our inventory through official OEM channels and trusted third-party suppliers, ensuring every item is authentic and reliable.
How will you arrange shipment?
We'll handle the shipping for you. Through our partnerships, we can secure competitive rates with major carriers like FedEx, DHL, TNT, and UPS, ensuring a smooth and cost-effective delivery.
What is the warranty of goods?
One-year Warranty.
How long is the logistics cycle of the product?
Products are divided into spot and futures, and the delivery period of different brands of products is also different. For details, please contact the ACH business manager.