ABB Expands Combustion Gas Analysis Capabilities

June 3, 2010

The new Endura AZ20 oxygen probe can operate in industrial and utility boiler applications in temperatures up to 800°C.

WARMINSTER, PA -- ABB has launched its next generation of combustion gas analyzers for industrial and utility boiler applications. With a revised sensor design and an increased choice of probe lengths up to 4 m (13+ ft.), the Endura AZ20 expands ABB's offering to high temperature applications up to 800°C.

The Endura AZ20 offers an enhanced robust design. Manufactured using a new ceramic-to-steel bonding process, the AZ20 offers improved resistance to thermal stresses and shocks compared to a conventional brazed design. This enables it to be used in a wider range of applications subject to sudden variations in process temperature, as well as offering a gas-tight bond throughout its operating temperature range.

The Endura AZ20 benefits from a unique cell processing technique which bonds the multi-layered platinum electrode to the zirconia. This means that the AZ20 can be used in arduous applications subject to sulfurous and reducing atmospheres such as sulfur recovery processes, crematoria and industrial and clinical waste incineration.

Additionally, ABB has reduced the component count of the AZ20, simplifying maintenance. For any problems that do occur, the AZ20's NAMUR compliant diagnostics, with alarms and warnings in clear text, enable operators to quickly trace and rectify the fault.

Operation has been simplified by the use of ABB's new universal Human Machine Interface (HMI), which has now been extended across its range of instrumentation products. Enabling operators to easily scroll through and select options, the HMI simplifies operation, maintenance and training, reducing cost of ownership and providing a consistent user experience. "Through-the-glass" control technology provides a local operator interface for inputting short, quick data for all user specific parameters without removing the transmitter cover. As a HART-enabled device, the Endura AZ20 also offers the ability for operators to perform online modification and monitoring of parameters.

Improved process control results from the positioning of the zirconium oxide measuring sensor at the tip of the probe prior to insertion into the flue duct. This offers the ideal position for direct in-place measurement, enabling users to get an accurate and immediate oxygen reading for optimizing the combustion control process.

Another new feature is the inclusion of integrated advanced calibration technology, which automatically controls both the test gas flow rate and test gas sequences during calibration testing. This eliminates the need for expensive ancillary equipment typically needed for traditional flue gas oxygen analyzer systems and prevents incorrect calibrations caused by the loss of test gas.

About ABB
ABB is a leader in power and automation technologies that enable utility and industry customers to improve their performance while lowering environmental impact. The ABB Group of companies operates in around 100 countries and employs about 107,000 people.

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