ABB has announced the launch of its next generation of combustion gas analysers for process industries, hydrocarbon processing, power generation and utility boiler applications.
AZ20 combustion gas analysers are manufactured using a new ceramic-to-steel bonding process that offers improved resistance to thermal stresses and shocks compared to a conventional brazed design. This enables the combustion gas analysers to be used in a wider range of applications that are subject to sudden variations in process temperature, as well as providing a gas tight bond throughout its operating temperature range.
Endura AZ20 combustion gas analysers feature a revised sensor design and a wider choice of probe lengths up to 4 metres, expanding ABB’s offering to a new range of high temperature applications up to 800°C. These analysers benefit from a unique cell processing technique that bonds the multi-layered platinum electrode to the zirconia, meaning that the combustion gas analysers can be used in tough applications that are subject to sulphurous and reducing atmospheres such as sulphur recovery processes, crematoria and industrial and clinical waste incineration.
AZ20 combustion gas analysers have had their strength further enhanced by its reduced component count. With fewer parts requiring servicing or replacement, these combustion gas analysers offer simplified maintenance. If problems do occur, the AZ20’s NAMUR compliant diagnostics, with alarms and warnings in clear text, enables operators to quickly trace and rectify the fault.
ABB’s new universal Human Machine Interface (HMI) has been utilised to simplify operation, which has now been extended across its range of instrumentation products. The HMI simplifies operation, maintenance and training, reducing cost of ownership and providing a consistent user experience by allowing operators to easily scroll through and select the desired options. “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, Endura AZ20 combustion gas analysers also offer the ability for operators to perform online modification and monitoring of parameters.
The positioning of the zirconium oxide ensures improved process control by measuring sensor at the tip of the probe, which is then inserted into the flue duct. This offers the ideal position for direct in-situ measurement, enabling users to get accurate and immediate oxygen readings for optimising the combustion control process.
The inclusion of integrated advanced calibration technology, which automatically controls both the test gas flow rate and test gas sequences during calibration testing, eliminates the need for expensive ancillary equipment typically needed for traditional flue gas oxygen analyser systems and prevents incorrect calibrations caused by the loss of test gas.
ABB is represented in Australia by ABB Australia .