Pyxis conductivity sensors

Pyxis ST-720 Inline Conductivity Sensor

High range smart conductivity sensors, built robustly for industrial water treatment applications

The ST-720 and ST-726 are uniquely designed industrial-grade inline conductivity sensors that offer greatly improved range, accuracy and stability with anti-interference capabilities. A built-in transmitter supports both digital and analogue signal output, designed to simplify on-site installation, calibration and operation. The ST-726 offers a dynamic conductivity range, at 10-300,000 µS/cm. The ST-720 in comparison offers 1-100,000 µS/cm for less demanding applications.


  • Large/dynamic range 1–100,000 µS/cm and 0-300,000 µS/cm
  • Two 4–20mA & RS-485 outputs for temperature and conductivity
  • Conductivity value compensated based on the measured temperature to normal value = 25 ºC
  • Wireless diagnosis & calibration via uPyxis® app
  • Cell constant – K Factor = 0.3


Typical applications

  • Industrial water
  • Process water
  • Surface water
  • Waste water
  • Storm water

Related products

  • Walchem WEL series pH ORP electrode

    Contacting conductivity
    Low cost CPCV or stainless steel

  • Pyxis ST-725 Inline Sensor

    Ultra-low conductivity
    Designed for pure and ultra-pure water applications

  • Robust conductivity
    Stainless steel for high pressure & temperatures

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Custom build solutions

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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

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24 Vision Park
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SG18 9GQ

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