Pyxis RT-200 PRISM Inline Refractometer

Pyxis RT-200 PRISM Inline Refractometer

The Pyxis RT-200 Prism measures the refractive index of a liquid sample and provides a direct reading of highly accurate concentration values

The RT-200 Prism offers fully integrated 4-20mA and RS-485 Modbus output signals for connec- tivity to any microprocessor-based controller, display, PLC or DCS network. The RT-200 Prism has built-in temperature dependent equations to convert the measured sample temperature and refrac- tive index to the percentage concentration of Mono Ethylene Glycol (MEG), Mono Propylene Glycol (MPG), Sugar Content (Brix) and Advanced Low Viscosity Fluid (ALV). Built-in Bluetooth 5.0 makes it easier to connect to your phone. Additional concentration curves can be added via uPyxis APP.


  • Operational at temperatures as high as 248 oF (120 oC)
  • 4-20 mA Output of Sample Temperature and the Unit of Display Selected via the Screen Interface • User Customizable 4-20mA Concentration Output Ranges with uPyxis® APP
  • RS-485 Modbus RTU Output of Temperature, Refractive Index and Other Diagnosis Parameters
  • Built-in Temperature Dependent Equations % BRIX, %MPG, %MEG and % ALV
  • Additional Concentration Curves can be added via uPyxis® APP.
  • Local Large Screen Display and Push-Button Interface
  • 110VAC – 24 VDC Wall Outlet Powered for Independent Operation w/out Controller
  • Built-In Historical Data Log up to 56 Days of Storage at 1 Reading Per Minute via uPyxis® APP
  • Built-In Bluetooth for easier setup and diagnosis via uPyxis® APP
  • Sturdy 316L Stainless-Steel Construction and Suitable for Harsh Application Environments
  • Convenient Stainless-Steel Tri-Clamp Flow Cell Assembly w 3⁄4-inch NPT Flange
  • Optional RT-Series Ultra-Sonic Cleaning Module Sold Separately


Typical applications

  • Refractive Index Direct Read for Process Applications
  • Mono-Ethylene/Propylene Glycol Closed Loop System Monitoring
  • BRIX/Sugar Concentration Process Applications
  • Advanced Low Viscosity Fluid Heat Transfer Fluid
  • Specific Gravity Determination via Refractive Index



Custom build solutions

Redefine simplicity and flexibility in cooling tower solutions with our plug-and-play service that delivers rapid installation.

We offer standard layout that serves as a solid foundation but we can be customise to meet the unique needs of any client site. We tailor the build to achieve optimal performance.

Our custom builds are popular as a comprehensive solution that's wired and seamlessly integrated meeting any site requirements. Email us today to learn more about our bespoke custom built solutions to speed up your installation and reduce operation or project downtime.


We specialise in delivering tailored product training to empower your team and enhance operational efficiency. Whether you prefer on-site sessions, at your company's location or the convenience of video conferencing, we've got you covered.

Our focus revolves around installation best practices, ensuring seamless product connectivity, and optimising maintenance procedures. Take the first step towards maximising your team's potential. Email us today to learn more about our bespoke training offerings, check availability, and embark on a journey to enhance your team's expertise.

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Sensys Ltd

Head Office
Unit 9 Pond Close
Walkern Road
United Kingdom

01438 759 595

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