ABB expands potable water quality analyzer range with new ISE monitors

ABB’s Aztec 600 range now includes ISE as well as colormetric analyzers – allowing cost savings of up to 25% on reagent usage

ABB has expanded its Aztec 600 range of potable water quality analyzers to include Ion-Selective Electrode (ISE) monitors for ammonia and fluoride – joining the Aztec 600 colorimetric range of analyzers for Aluminium, Iron, Manganese, Colour, Phosphate and Ammonia.

The Aztec 600 ISE Ammonia uses gas sensing electrodes to monitor ammonia concentrations in water between 0.05 and 1000mg/l. A pump draws in the sample and passes it through two solenoid valves used for calibration. The sample is then mixed with reagents in the peristaltic pump, with the resulting solution sent to the sensor flowcell, under temperature controlled and constant flow conditions. Available in both the colorimetric and ISE models – the latter provides a wider range of measurement.

The Aztec 600 ISE Fluoride monitor uses a different ion-selective electrode and reagent for the measurement process. The reagent stabilizes the pH in the sample and suppresses any chemical interference from metallic compounds, providing a more stable and accurate measurement.

The range also provides an additional safeguard in potable water applications. The Aztec 600 Ammonia’s wide measuring range, for example, makes it ideal for potable water intake protection, whilst the Aztec 600 Fluoride helps ensure that doses of fluoride added to water are maintained within the regulatory limits set by the Drinking Water Inspectorate.

Furthermore, both these monitors offer cost savings of up 25% on reagent usage, with additional savings achievable using the monitors’ new ‘Eco’ mode feature – enabling users to reduce pump speed in applications where a fast response time is not required. By slowing down the pump speed, less reagent is consumed, reducing the frequency of reagent changes to up to three months.

The ISE analyzers are available in single stream configuration, whilst the colorimetric range comes in either single or multi-stream configurations, enabling operators to use just one device to monitor up to three streams sequentially all with current loop, Ethernet or Profibus outputs.

A key benefit of the Aztec 600 range is its ease of operation. Front-mounted pushbuttons allow easy device interaction in a familiar Windows™ environment. Operation and commissioning is straightforward, with menus presenting options for setting and fine-tuning parameters. Added support is provided by an extensive context-sensitive on-line help feature.

Based on ABB’s common operator interface, the Aztec 600 colorimetric analyzers feature a full colour graphical display, allowing process trends to be easily viewed and analyzed locally. Historical logs provide operators with access to alarm and audit trail data. Process data and historical logs are securely archived to a removable SD card with capacity of up to 2 GB.

A built-in Ethernet communications link with onboard web and ftp servers enables remote monitoring, configuration selection, data and log file access to the analyzer from a web browser.

ABB Aztec 600 analyzers are backed up by a comprehensive local service and support network, offering everything from commissioning through to upgrades throughout the life of the product.

For more information, email moreinstrumentation@gb.abb.com or call 0870 600 6122 ref. ‘Aztec 600’.

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