Color analyzer
Aztec AW637

Improve drinking water quality and minimize chemical coagulant usage

The Aztec 600 color analyzer has been designed specifically for the measurement of water color through the drinking water treatment process for coagulation optimization.




The Aztec 600 on-line color monitor provides water treatment operators with a cost-effective tool for quick and accurate assessment of treatment performance in real time

Featuring ABB's intuitive menu-driven software and the unique self-cleaning Aztec fluid handling system, users benefit from an analyser that is both simple-to-operate and maintain.

Users benefit from:
  – Analysis of up to 3 sample streams
  – Automatic 2-point calibration
  – Self-cleaning measurement system
  – Intuitive software with full colour graphical display
  – Data logging and graphical process trending
  – Full audit trail capability
  – Secure data archiving to SD Card


  • Measurement range
    0 to 500 Pt-Co units (0 to 500 Hazen units)

  • Chemical Method
    Measurement of water color by absorbance at 400nm expressed in Hazen scale or Platinum-Cobalt scale

  • Measurement frequency
    1 to 12 measurements per hour (User-selectable)

  • Accuracy / maximum measured error
    ±2 % of reading or ±0.5 Hazen for 0 to 300 Hazen (whichever is the greater)
    ±5 % of reading for 300 to 500 Hazen

  • Repeatability
    ±1 % of reading (at 20% of span)

  • Resolution
    0.001 ppm or 1 ppb

  • Measurement units
    mg/l, ppm, ppb, μg/l

  • Calibration
    2-point, automatic calibration


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