TRO Marine™ Smart Sensor

The TRO Marine™ Sensor System is an accurate and reliable total residual oxidant (TRO, measures both chlorine and bromine) measuring system designed to automate and simplify operation of water treatment systems.  Our proprietary design is a revolutionary breakthrough in automated water treatment that is self-cleaning and requires little to no maintenance.  In addition, the TRO Marine™ does not require expensive reagents, frequent re-calibration, or fragile membranes. 


pronghorn technologies



  • Ballast Water
  • Cooling Water
  • Fire Mains


  • Cooling Towers
  • HVAC Systems
  • Swimming Pools
  • Wastewater
  • Desalination
  • Potable Water

Key Benefits

  • Measures Total Chlorine and Bromine
  • No Reagents
  • Rugged Design
  • Single Point Installation
  • Flow Independent Measurement
  • Automates Water Treatment Systems
  • Low Maintenance, No Membranes
  • Ensures Complaint Chlorine Discharge