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Rosemount Inc., a renowned subsidiary of Emerson Electric Co., is a global leader in precision industrial measurement and automation instrumentation. Founded in 1956 and acquired by Emerson in 1976, it is headquartered in Shakopee, Minnesota, USA. The company specializes in designing and manufacturing highly reliable sensors and transmitters for measuring pressure, temperature, level, and flow, with its iconic 3051 Pressure Transmitter series being an industry benchmark. Its products are critical to operations in oil & gas, power, chemical, and other process industries worldwide, serving over 100 countries. Renowned for innovation, quality, and a strong customer focus, Rosemount provides essential solutions for process optimization, safety, and efficiency.
The Rosemount 228 Toroidal Conductivity Sensor is a high-performance, low-maintenance solution for measuring conductivity in demanding industrial applications. Designed for Emerson's Rosemount analytical instruments, this toroidal (inductive) sensor provides accurate and stable conductivity measurements in aggressive chemical environments, high-fouling conditions, and applications requiring minimal maintenance.
✔ Toroidal Measurement Technology – Contactless design eliminates polarization effects and electrode fouling, ensuring long-term stability
✔ Wide Measurement Range – Capable of measuring conductivity from 0-2,000 μS/cm up to 0-2,000,000 μS/cm (depending on model)
✔ Robust Construction – Chemically resistant PEEK or Tefzel body materials withstand harsh process conditions
✔ No Flow Dependence – Provides accurate measurements regardless of fluid flow velocity
✔ Low Maintenance – No moving parts and no electrode cleaning required
✔ Easy Integration – Compatible with Rosemount 56/1066/1056 analyzers for seamless system integration
✔ Multiple Process Connections – Available with flange, sanitary, or submersion mounting options
| Parameter | Specification |
|---|---|
| Measurement Principle | Toroidal (Inductive) Conductivity |
| Measurement Range | 0-2,000 μS/cm to 0-2,000,000 μS/cm (model dependent) |
| Accuracy | ±0.5% of reading or ±1 μS/cm (whichever is greater) |
| Temperature Compensation | Automatic (PT1000 RTD built-in) |
| Process Temperature Range | -40°C to 150°C (-40°F to 302°F) |
| Process Pressure Rating | Up to 10 bar (145 psi) at 150°C |
| Body Materials | PEEK, Tefzel, or 316L SS |
| Electrical Connection | Integral cable or quick-disconnect |
| Hazardous Area Certifications | ATEX, IECEx, CSA (model dependent) |
| Compatible Analyzers | Rosemount 56, 1056, 1066 series |
The Rosemount 228 Toroidal Conductivity Sensor is ideal for:
✔ High-Purity Water Systems – Power plant boiler feedwater, ultrapure water (UPW)
✔ Chemical Processing – Acid/base concentration monitoring
✔ Food & Beverage – CIP (Clean-in-Place) systems, product concentration
✔ Pharmaceutical – WFI (Water for Injection) monitoring
✔ Wastewater Treatment – Brine concentration, desalination plants
✔ Pulp & Paper – Black/white liquor monitoring
✅ Superior Performance in Fouling Applications – Unlike contacting sensors, the toroidal design is unaffected by coating or scaling
✅ Wider Measuring Range – Single sensor covers applications from ultrapure water to concentrated acids
✅ Reduced Maintenance Costs – No electrode cleaning or replacement needed
✅ Emerson Global Support – Backed by Emerson's worldwide service network
✅ Seamless Integration – Works with Rosemount 56/1056/1066 series analyzers for complete conductivity monitoring
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 and EMERSON 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.
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.
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.
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.
One-year Warranty.
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.