Measurement and control of pH is important in a wide variety of industries. Water and wastewater, boiler feed water, high purity water, food processing wash water, chemical plant cooling water, and many other aqueous systems require reliable pH monitoring. ATI’s Model Q46P pH monitor provides the combination of durability, accuracy, and versatility required for virtually any pH monitoring or controlapplication. The Model Q46R provides the same reliable monitoring for OxidationReduction Potential (ORP) applications.

ATI’s Q46 platform represents our latest generation of monitoring and control systems. Control features have been expanded to include an optional 3rd analog output or an additional bank of low power relays. Digital communication options now sensors include Profibus DP, Modbus RTU, or Ethernet IP variations.

Key Facts

  • Sensor Options. Choice of either “differential” or “conventional” pH sensors. Differential sensors provide reliable, long lasting service in demanding applications while conventional sensors provide a lower cost alternative for clean water applications.
  • Calibration. Automatic buffer recognition simplifies calibration.
  • Auto-Cleaning. Automatic “Air Blast” sensor cleaning system available for reducing maintenance in applications where sensor fouling is a problem.
  • AC or DC Power Options. Power options include universal 100-240 VAC +/- 10% or 12-24 VDC.
  • Analog Output Options. Two isolated 4-20 mA outputs are standard, with an option for a third output if required. Default setting provides analog outputs for pH/ORP and temperature.
  • PID Output. Standard PID control function assignable to one analog output.
  • Digital Communications. Three digital communication protocols are available: Profibus DP, Modbus RTU, or Ethernet IP.
  • Relay Outputs. Three SPDT relays are standard, with relay functions programmable for alarm, control, or trouble indication. An additional three internal low-power relays provide control of the automatic sensor cleaning function.
  • Flexible Mounting.NEMA 4X (IP-66) enclosure is suitable for wall, pipe, or panel mounting.
  • Clear Display. Back-lit large LCD display provides clear visibility in any lighting conditions. A scrolling second line on the display provides additional information and programming prompts.

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