Understanding Chlorine Sensor Technologies

DPD vs. Amperometric: Understanding Chlorine Sensor Technologies

Free Webinar | 1 Hour 

Chlorine is a powerful disinfectant that has played a critical role in municipal water treatment for over a century and is one of the most important tools for protecting public health. However, ensuring effective disinfection without creating harmful by-products requires careful monitoring and control.

Watch a technical deep dive into chlorine disinfection, exploring the chemistry, monitoring requirements, and sensor technologies that drive reliable water quality. This session will compare DPD-based analyzers and amperometric sensors, helping you understand when and why to measure free vs. total chlorine in both drinking water and wastewater applications.

What You’ll Learn:

  • The role of chlorine in disinfection and factors affecting its behavior
  • Differences between free and total chlorine—and when each should be measured
  • Principles, strengths, and limitations of DPD and amperometric technologies
  • Guidance for selecting the right monitoring approach for your facility
  • Best practices for chlorine dosing, calibration, and maintenance

Who Should Watch:

Operators, engineers, and water quality professionals are responsible for monitoring and complying with disinfection standards in drinking water and wastewater systems.

Learning Outcomes:

By the end of this webinar, you’ll be able to:

  • Understand free vs. total chlorine differences and when to monitor each parameter
  • Compare DPD and amperometric systems, recognizing appropriate use cases and considerations
  • Apply monitoring and dosing strategies for improved process control in drinking water and wastewater applications.

Presented by:

Adrienne Stenz, Application Development Engineer, YSI, a Xylem brand

Adrienne has been with Xylem for over five years, specializing in municipal treatment, instrumentation, and analytics. She has extensive knowledge of wastewater processes and the integration of YSI’s instrumentation line in these applications. Adrienne supports the YSI process and utility team through technical training and marketing content, including application notes and presentations. She holds a B.S. in Chemical and Biological Engineering from the University of Colorado Boulder.

John Welsh, Senior Product Manager, YSI, a Xylem brand

John has been with Xylem for over 20 years. During this time, he has held the positions of Customer Support Manager and director of R&D/ R&D/Engineering, and for the past eight years, he has been in product management. He has a broad background in all areas of analytical instrument design, development, application, service, and support. John Welsh has earned a Ph.D. in Chemistry, with an emphasis in Analytical Chemistry and Instrumentation Development.