Q46H/64 Dissolved Ozone Monitor

Water treatment processes using ozone gas have steadily increased over the past 20 years. Ozone has proven to be an extremely effective oxidant, removing organic carbon from raw water and destroying most pathogens. As a result, ozone treatment is now widely used in the semi-conductor, pharmaceutical, and food and beverage industries. In addition, many large cities are now using ozone to improve the quality of the drinking water distributed to their customers.

ATi’s Q46H/64 Dissolved Ozone Monitor provides an economical and reliable measurement system for water quality monitoring and controlling ozone treatment systems. With a variety of outputs including 4-20 mA analog, PID control, three adjustable relays, and digital communications, the Q46H/64 is adaptable to any ozone application.


  • pH Input Option
  • Flexible, programmable range options from 0-200 PPB up to 0-200 PPM
  • AC or DC Power Options
  • Analog Output Options
  • PID Output
  • Digital Communications for Profibus-DP, Modbus-RTU, or Ethernet-IP.
  • Relay Contacts Options
  • Flexible Mounting Options
  • Large, backlit, LCD display


Additional information

Display Range

0-2.000 PPM, 0-20.00 PPM, 0-200 PPB, 0-200.0 PPM


0.5% of selected range


Two isolated 4-20 mA, 500 ohm load max.
(3rd output optional)

Transmitter Display

4 digit, 0.75” numeric LCD with 12 character second line, LED back light

Transmitter Power

90-260 VAC, 50/60 Hz, 10 VA max.
12-24 VDC, 500 mA max.


NEMA 4X (IP-66) Polycarbonate, V-0 flammability

Transmitter Operating Temperature

-20 to 60 C (-4 to 140 F)

Sensor Type

Membraned-Covered Amperometric (Polargraphic)

Sensor Materials

PVC & 316SS

Sensor Temperature Limits

0 to 50 C

Sensor Pressure Limits

0 to 50 PSIG