Description
Endress+Hauser CUS51D-1191/0
High-precision inline turbidity sensor for reliable water and wastewater quality monitoring
| Brand | Endress+Hauser |
| Model | CUS51D-1191/0 |
| Voltage | 24V DC |
| Country of Origin | Germany |
| Weight | 1.2 kg |
| Dimensions | 194 x 70 mm |
| Warranty | 24 months |
| Certifications | CE, cULus, ATEX, IECEx, FDA conform |
| SKU / MPN | CUS51D-1191/0 |
| What’s in the box | Turbidity sensor, calibration certificate, quick start guide, mounting accessories |
| Measurement Principle | 90° scattered light (NIR per ISO 7027) |
| Measuring Range | 0 to 4000 FNU / 0 to 5 g/L |
| Process Temperature | -5 to +50 °C |
| Process Pressure | Max. 10 bar (145 psi) |
| Output Signal | 4-20 mA + HART / digital |
| Wetted Material | Stainless Steel 1.4571 (316Ti), Sapphire |
Key benefits: ISO 7027 compliant NIR optical measurement, robust stainless steel construction, long-term stability, integrated air bubble detection, easy calibration, wide measurement range
Typical applications: Drinking water treatment, wastewater management, industrial process water, sludge monitoring, surface water analysis, fish farming
Lifecycle: Active product with long-term availability, supported by Endress+Hauser global service network
Our Advantages
Exact match for many brands
We make replacements easy with an exact match for almost any brand.
We use OEM catalogs to match your part number
Don't worry about ordering the wrong part by matching your part number with our OEM catalogs.
Competitively priced
Shop with confidence knowing we are offering very competitive pricing!
Orders usually ship the same day
Rest assured your order will arrive as soon as possible knowing we usually ship the same day.
Individually inspected
Before any package is shipped we carefully inspect every product to ensure quality.
Guaranteed for one full year
All of our New Surplus and Reconditioned products come with a 1 year warranty.
Run Business
Building a reputation for quality products at a reasonable price. Our inventory is far more extensive than what can be represented on our web site, so please call one of our knowledgeable salesmen with your specific needs.








Linda B. –
Industrial camera clarity is impressive. Shipped promptly with all accessories.