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 13 or more feet, the Endura AZ20 expands ABB’s offering to high temperature applications up to 800°C.
Manufactured using a new ceramic-to-steel bonding process, the AZ20 is designed to offer 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 utilizes a cell-processing technique that bonds the multilayered platinum electrode to the zirconia. This means that the AZ20 is designed to 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, which can simplify maintenance. If issues occur, the AZ20’s NAMUR-compliant diagnostics enable operators to trace and rectify the fault. 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.
