ATI Q46H/83 Potassium Permanganate Monitor

The ATI Q46H/83 allows for continuous monitoring of low permanganate concentrations, allowing operators to adjust chemical feed rates and achieve target values.


  • Monitors KMnO4 without sensor contamination
  • Contact outputs include two programmable control relays for control and alarm modes
  • Communication Options for Profibus-DP, Modbus-RTU, or Ethernet-IP
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ATI Q46H/83 Potassium Permanganate MonitorQ46H/83 Potassium permanganate monitor
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Potassium Permanganate (KMnO4) is a strong oxidizer used in the water industry for reduction of organics in raw water. It is also used for control of zebra mussel problems at raw water intake structures. Continuous monitoring of low permanganate concentrations allows operators to adjust chemical feed rates and achieve target values. Chemical feed problems that result in either too little or too much residual can be quickly identified and corrected.
The Q46H/83 eliminates this problem by employing a measurement method in which the sensor never comes into contact with the sample. In operation, water containing permanganate is mixed with pH buffer and potassium iodide solutions. Permanganate oxidizes the iodide to iodine (I2), and the resulting I2 is stripped out of solution and measured using an I2 gas sensor. This “gas phase” measurement  technique eliminates MnO2 sensor fouling, resulting in a system capable of providing long term reliability.

The Q46H/83 Permanganate monitor consists of two main components, an electronic display unit and a chemistry module.  The  chemistry module contains sample and reagent pumps, sample handling systems, and the gas sensor that provides the final measurement.  An inlet overflow assembly attached to the bottom of the chemistry module is where the inlet sample line and drain line are connected.  Sample inlet flows of 250-100 ml./min. are recommended to keep system response time to a minimum.  Reagent bottle holders are supplied so that reagents can be wall mounted below the chemistry system.

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