Ammonia analyzer
Aztec AAM631

Providing continuous ammonia analysis for optimization of nutrient removal

The Aztec 600 ISE ammonia analyzer provides reliable and accurate measurement of ammonia concentrations for a wide variety of applications including source water monitoring and wastewater nutrient removal.




The Aztec 600 ISE ammonia analyzer uses a robust gas sensing ammonia electrode to provide accurate and reliable continuous measurement of the total ammonia nitrogen (TAN) concentration, that is the sum of the gas NH3 and the cation NH4+.

Featuring ABB's intuitive menu-driven software and the robust ISE sensing system with automatic calibration, users benefit from an analyzer that is both simple-to-operate and maintain.

Users benefits from:
  – Continuous measurement using ISE technology
– Automatic 2-point calibration
– Buffered measurement for maximum accuracy
– Low reagent consumption (up to 3 months continuous measurement before reagent replenishment)
– Temperature-controlled flowcell for measurement stability
– 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:
0.050 - 1000 ppm NH3 (0.050 - 1000 mg/L)
Measurement Principle:
Gas-sensing ammonia probe
Measurement mode:
Accuracy / maximum measured error:
±5 % of reading or ±0.02 ppm for 0.05 to 500 ppm (whichever is the greater)
±7.5 % of reading for 500 to 1000 ppm
±2 % of reading or ±0.02 ppm (whichever is the greater)
Response time:
Normal operating mode: T90 typically 5 mins
EcoMode: T90 typically <7.5 mins
0.001 ppm for 0 to 10 ppm
0.01 ppm for 10 to 100 ppm
0.1 ppm for 100 to 1000 ppm
2-point, automatic calibration
Measurement units:
mg/l, ppm, ppb, μg/l


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Service ABB offer a full range of services to support you and your processes, including:

Product commissioning
Maintenance and field services
Repairs Spare parts services
Explore our comprehensive range of services at Measurement & Analytics service

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