Residual Chlorine Transmitter

ATi’s Residual Chlorine Transmitter is designed for on-line monitoring and control of chlorination systems. It is available as a Free Chlorine Monitor for drinking and cooling water systems, and a Combined Chlorine Monitor ideally suited for “chloraminated” drinking water. The Combined Chlorine System can also be used in wastewater effluents where sufficient ammonia is present prior to chlorination to result in a predominantly monochloramine residual.


Features & specifications

  • Free or Combined Chlorine monitoring
  • Loop-powered or battery operation
  • External 5-17 VDC version for solar power applications
  • Reagent free measurement
  • pH compensation for operation to pH of 9.5
  • Measurement from 0-200 ppb to 0-200 ppm
  • Constant-head flowcell simplifies operation
  • Large, easy-to-read LCD display
  • Clear, menu-driven user interface
  • NEMA 4X (IP-66) enclosure
  • Wall or pipe mounting bracket standard
  • Built-in PID controller


ATi’s Q45H/62-63 Residual Chlorine Transmitter is available for a wide range of applications including:

  • Potable Water Treatment
  • RO Membrane Protection
  • Chloramination Systems
  • Cooling Towers
  • Wastewater Treatment
  • Food Wash Water