Rosemount 228 Toroidal Conductivity Sensor Rosemount PH Sensors

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.

​Product Overview​

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.

​Key Features & Benefits​

✔ ​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

​Technical Specifications​

​Typical Applications​

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

​Why Choose the Rosemount 228 Toroidal Sensor?​​

✅ ​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.