• Control Solutions

Custom Control Solutions

For almost twenty years, RODI Systems has served water treatment OEMs and service companies by designing and manufacturing custom monitoring, control, and instrumentation products.  Our client list for custom and proprietary control solutions includes Stranco, US Filter, Nalco, Siemens, and a host of smaller water treatment companies.  RODI's custom control products are now monitoring and controlling over 10,000 installations world wide in applications that include:

  • Reverse Osmosis
  • Membrane Filtration
  • Membrane Bioreactors
  • Media Filtration
  • Softening
  • Boiler Control
  • Cooling Tower Control
  • Disinfection
  • Chemical Feed
  • Pump Control


Unlike most controls integration companies, RODI specializes in water treatment and industrial fluid handling applications. Our experience with water treatment technologies, in addition to instrumentation and control technologies, makes the design process easier and less expensive.  We have extensive experience in monitoring and controlling water treatment parameters such as:

  • Conductivity and Resistivity
  • Flow
  • Pressure
  • pH
  • ORP
  • Chlorine and Chlorine Dioxide
  • Temperature


RODI's experience also covers a wide range in terms of system size. Our projects have included imbedded, single board control systems with only a few I/O points all the way up to large integrated, PLC-based systems with up to 500 I/O points.  Our custom solutions have included the following features:

  • Data Logging
  • Remote Access (LAN and Cellular)
  • Industrial Protocols (Modbus RTU, Modbus TCP, A-B DF1)
  • Building Management Protocols (BACnet, Metasys)


A custom designed monitoring or controls solution offers a number of advantages:

  • Lower cost, especially for systems monitoring multiple parameters
  • Unique features and appearance set your product apart from your competition
  • Easier and less expensive to install as compared to integrated systems


We invite you to contact us to learn more about our capabilities and how we can help with your next water treatment controls project.  Click here for a slide presentation on our OEM controls capabilities.