This direct measuring system does not require the addition of chemical reagents to measure total chlorine. The Q46H/79PR total chlorine monitor is well suited for potable water systems, water reuse systems, cooling towers, aquariums, and for monitoring wastewater treatment effluents.

The basic sensing element used in the total chlorine monitor is a 3-electrode amperometric membrane sensor which measures chlorine directly. The chlorine measurement does not alter the sample or add any chemicals to the sample stream, so the water flow can return to the system if desired.

In addition to total chlorine measurement, the Q46H/79PR is also available with an optional pH input which provides a two-parameter monitoring system.

Key Facts

  • Total Chlorine. Membraned-covered amperometric sensor that measures total chlorine without the addition of pH buffer, iodide solution, or other reagents. The total chlorine sensor can be tank mounted with a submersion assembly, or flow-cell mounted for sampling applications.
  • Optional pH Sensor. Active pH measurement with choice of pH sensor types. Selecting this option converts the monitor to a dual analyzer, providing 4-20 mA outputs for both chlorine and pH.
  • Flexibility. Programmable range options from 0.1 PPM to 200.0 PPM through 3 internal automatic ranges. User ranges of 2.000 PPM, 20.00 PPM, or 200.0 PPM.
  • AC or DC Power Options. Available in either 90-260 VAC or 12-24 VDC power supply systems. All features remain the same in both variations.
  • Analog Output Options. Two analog outputs may be configured to track chlorine and temperature, chlorine and chlorine, or chlorine and pH. Both analog outputs can be individually programmed to fail to specific values. An optional 3rd output is available for tracking all three parameters.
  • PID Output. PID controller can be configured as one of the two outputs. PID includes manual operation feature, and diagnostic “stuck-controller” timer feature for relay notification of control problems.
  • Digital Communications. Available in either Profibus-DP or Modbus RTU. More versions pending.
  • Relay Contacts. Three 6 amp SPDT relays and two analog 4-20 mA outputs are standard. Software settings for relay control include setpoint, deadband, phase, delay, and fail safe. An optional 3-relay card, for 0-30 VDC signals, is available to bring the total to 6 relays.

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