ABB Endura AZ20 Oxygen Monitor Combustion gas analysis

ABB Endura AZ20 Oxygen Monitor Combustion gas analysis

OVERVIEW

The Endura AZ20 is the latest in a long line of high-quality, combustion gas analyzers from ABB. The sensor, based on a zirconium oxide cell, is mounted at the tip of the probe that is inserted in the flue duct. The resulting direct, in situ measurement provides accurate and rapid oxygen reading for combustion control optimization and emissions monitoring.

Advanced design and precision manufacturing

— robust, long-life probe for process temperatures up to 800 °C (1472 °F) 

— proven cell design from over 50 years experience 

— fast response to process variations 

— stable and accurate oxygen measurement

Unique integrated auto-calibration system 

— easy compliance for emission monitoring regulation 

— reduced installation costs; eliminates requirement for expensive external calibration panel 

— reduced maintenance costs

Probe lengths up to 4.0 m (13.1 ft.) and industry-standard flange configurations 

— suitable for a wide range of applications 

— extensive installation options

Easy cell release 

— fully site-serviceable probe 

— easy access to internal components

Advanced transmitters 

— easy configuration, monitoring and intuitive HMI 

— HART communications 

— cell performance logging and diagnostics

Advanced Design

Designed and manufactured to exacting standards, the Endura AZ20 ensures long periods of trouble-free operation in even the most arduous of applications. The operating process temperature of up to 800 °C (1472 °F) extends system suitability into previously impossible applications and enables optimum probe location within the process. The modular design, with reduced component count, improves the robustness and reliability of the system and simplifies routine maintenance and servicing.

Complete traceability ensures only the highest quality materials are used in the analyzer's construction and rigorous manufacturing, inspection and testing procedures (to international standard ISO 9001) result in a monitor of superior quality with prolonged probe life.

Easy Cell Release

The Endura AZ20 probe has retained the easy-access cell arrangement of the previous generation ZFG2 probes. Cell replacement can be performed on-site using basic hand tools; even after long periods of high temperature operation where screw threads have 'seized' and can no longer be released. Kits containing all the parts needed to complete maintenance are available from ABB to ensure a technician can perform services quickly, efficiently and at minimum cost

Proven Cell Design

ABB's metallurgically bonded, multi-layer electrode technology increases the cell's resistance to sulphurous and reducing atmospheres and high temperature operation. This extends the life-cycle of the cell in the most arduous applications such as sulphur recovery processes, crematoria and industrial/clinical waste incineration.

Flow Rate Control using Flow Restrictors

The flow rates of test gas and reference air are important to the accurate operation of Zirconia-based oxygen analyzers and, traditionally, control has been achieved using ancillary flowmeters and flow control valves.

The Endura AZ20 offers a new approach with the inclusion of optional flow restrictors. These are fitted within the probe to control the flow rate of the reference air and test gasses, removing the need for additional flowmeters fitted with flow control valves. This innovative approach enables the gasses to be controlled by pressure only. 1 Bar (15 psi) is applied directly to the probe’s gas ports and the correct flow rate is then set by the flow restrictors.

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