Pyxis RT-100 PRISM Inline Refractometer

Pyxis Prism, inline digital refractometers for a wide variety of water and process related applications


  • 4–20mA output of sample temperature & the unit of display selected via the screen interface
  • RS-485 Modbus RTU output of temperature, refractive index and other diagnosis parameters
  • Built-in temperature dependent equations %BRIX, %MPG, %MEG and %ALV
  • Local display and push-button interface
  • Optional 110VAC–24VDC wall outlet powered for independent operation without a controller
  • Built-in historical data log up to 56 days of storage at 1 reading per minute via uPyxis®
  • Bluetooth® options for easier setup and diagnosis
  • Sturdy 316L stainless steel construction, suitable for harsh application environments
  • Convenient stainless steel tri-clamp flow assembly with 3/4inch NPT flange
  • Optional RT-series ultra-sonic cleaning module sold separately

Typical applications

  • Refractive index direct read for process applications
  • Mono-ethylene glycol closed loop system monitoring
  • Mono-propylene glycol closed loop system monitoring
  • BRIX/sugar concentration process applications
  • Advanced low viscosity fluid heat transfer fluid
  • Specific gravity determination via refractive index



Key information

ModelTemp rangeAccuracySignal output
-20-80 °C
Refractive Index: ±0.0001, BRIX & Glycol: ±0.01%
2x 4-20 mA and RS-485 Modbus
-20-150 °C
Refractive Index: ±0.000001, BRIX & Glycol: ±0.001%
2x 4-20mA & RS-485, Bluetooth® 5.0




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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