Chlorine Dioxide

with HydroACT Multiparameter Analyzer

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The HydroACT Reagentless Chlorine Dioxide Analyzer is one of our online disinfection monitoring solutions. Just like with the other HydroACT series products, our Chlorine Dioxide (ClO2) sensor is simple to install, and extremely reliable. The membrane covered probe is exceptionally stable for chlorine dioxide measurement, and requires no zero calibration. The vented flow cell allows for ideal sample flow to give the best detection results. Not needing reagents, the system requires minimal maintenance, and hence has lower overall lifetime costs than competitors’ products. The analyzer can be used for simple monitoring, as well as for controlling the Chlorine Dioxide dosage and maintaining the target residual.

HydroACT analyzers and controllers offer versatile solutions for your disinfection monitoring needs, with the flexibility to accept additional sensors, as well as offering expandable I/O, and PID control loops.

  • Includes analyzer, chlorine sensor, flow cell, 1 analog output, 1 year consumables
  • Accurate chlorine dioxide measurement
  • No moving parts, no reagents
  • Event logging
  • Expandable sensor inputs and I/O
  • Color display and data-logging with microSD card download
  • Modbus or PROFIBUS communications
  • Chemical feed control capability (e.g. PID)
  • Lower total cost of ownership
  • Easy set up and maintenance
  • Intuitive menu and programming functions

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Overview

The Chlorine Dioxide Analyzers can be used for whatever water applications where chlorine dioxide residuals need to be monitored and/or controlled. They consist of a HydroACT multi-parameter analyzer, a chlorine dioxide probe sensor, and a sample flow cell.

There are options for the HydroACT configurations depending on how many sensor inputs are necessary, output and communication needs, and control requirements.

Standard flow cells are for a single probe. There are also options for two and three probe flow cells.

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Q & A’s

The analyzer offers multiple probe ranges, including 0.01-2, 0.01-5, 0.01-10, and 0.01-20 mg/L (ppm).

The membrane cap should be replaced annually, depending on water quality.

The resolution is 0.01 mg/L (ppm).

No, the Chemtrac Chlorine Dioxide Analyzer is reagentless, eliminating the need for monthly reagent changes.

The recommended flow rate is 15 to 60 L/hr.

The analyzer operates between 41°F and 113°F (5°C to 45°C).

The analyzer can operate within a pH range of 2-11 without additional compensation.

Ozone and chlorine can interfere with measurements. Some surfactants are partially tolerated.

Specifications

Features

Description

  • Type

    Membrane-covered amperometric three-electrode system

  • Measured

    Chlorine Dioxide

  • Probe Ranges

    0.01 – 2, 0.01 – 5, 0.01 – 10, or 0.01 – 20 mg/L

  • Resolution

    0.01 mg/L (ppm)

  • Reproducibility

    ±5%

  • Stability

    -2% per month (without calibration)

  • Working Electrode

    Gold cathode

  • Counter Electrode

    Stainless steel anode

  • Reference Electrode

    Silver/silver halide

  • Flow Rate

    15 to 60 L/hr.

  • Temperature Range

    > 41° up to 5 up to < 45° C)

  • Temperature Compensation

    Automatically by integrated thermistor (ATC)

  • pH Range

    pH 2 – pH 11

  • Permissible Over-Pressure

    7.25 psi (0.5 bar)

  • First Polarization Time

    120 min.

  • Re-Polarization Time

    30 min.

  • Zero-Point Adjustment

    Not necessary

  • Calibration

    At the device, by analytical determination

  • Housing Material

    PVC, silicone, polycarbonate, stainless steel

  • Dimensions

    Diameter approx. 0.98 in., length 6.89 in.

  • Replacement Intervals (Membrane)

    Annually (approx.) depending on water quality

  • Replacement Intervals (Electrolyte)

    3 – 6 months depending on water quality

  • Interferences

    Ozone and chlorine. Surfactants are partially tolerated

*Not suitable for measuring or controlling for dechlorination. Recommended to have a chlorine residual of at least 0.10 ppm at all times.

HydroACT Features

HA2

HA4

HA8

  • Sensor limit*

    2

    4

    8

  • Analog output limit*

    2

    4

    8

  • Relay limit*

    4

    8

    16

  • Digital Input limit*

    4

    8

    16

  • Isolated universal I/O

  • Nema 4X/IP65

  • Wall & panel mount

  • Multilingual

  • High resolution display

  • Graphical trending

  • On/Off threshold control

    optional

    optional

    optional

  • Advanced control (e.g. PID)

    optional

    optional

    optional

  • Color display

  • Customizable data logs

  • MicroSD card download

  • Remote (Internet) access

    optional

    optional

  • PROFIBUS, Modbus

    optional

    optional

*Optional configuration limits. See above description for standard configuration of analyzer version & I/O setup. Optional configurations must be specified.

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