+86 18030182217
+86 18030182217
sandydcsplc@gmail.com
Description
Product Overview
The ABB AZ20 is a high-precision in-situ combustion gas oxygen analyzer designed for real-time monitoring of oxygen concentration in flue gases. Part of ABB’s Endura series, this analyzer combines zirconium oxide sensor technology with advanced automation capabilities to optimize combustion efficiency and reduce emissions in power plants, industrial boilers, and waste incineration systems. By measuring oxygen levels directly in the flue duct, the AZ20 provides rapid feedback (response time <10 seconds) for adjusting fuel-air ratios, ensuring compliance with environmental regulations while minimizing energy waste .
Key technical innovations include a ceramic-to-steel bonding process that enhances thermal shock resistance, enabling operation in extreme conditions up to 800°C 9. The analyzer supports Hart communication and Modbus RTU protocols, allowing seamless integration with distributed control systems (DCS) or PLCs for remote monitoring and parameter adjustment. Its integrated auto-calibration system eliminates the need for external calibration panels, reducing installation costs by up to 30% and ensuring long-term measurement accuracy .
The AZ20 features a modular design with field-replaceable components, including the zirconia cell and thermocouple, simplifying maintenance. A backlit LCD display with multi-language support provides real-time data on oxygen concentration, temperature, and diagnostic alerts, while IP65-rated enclosures protect against dust and moisture in harsh industrial environments 5. With CE and UL certifications, the analyzer meets global safety standards for mission-critical applications.
Technical Specifications
| Parameter Name | Parameter Value |
|---|---|
| Product Model | ABB AZ20 |
| Manufacturer | ABB |
| Product Type | Combustion Gas Oxygen Analyzer |
| Measurement Range | 0–25% O₂ |
| Accuracy | ±0.2% of reading |
| Response Time | <10 seconds |
| Probe Temperature Range | -20°C to +800°C (process); -20°C to +50°C (transmitter) |
| Power Supply | 24 V DC ±10% |
| Communication Protocols | Hart, Modbus RTU (RS-485) |
| Enclosure Rating | IP65 (transmitter); high-temperature probe design |
| Probe Lengths | 0.5–4.0 m (1.7–13.1 ft) |
| Certifications | CE, UL 61010-1 |
| Weight | 10–30 kg (depending on configuration) |
| Calibration | Integrated auto-calibration system |
Key Features and Advantages
High-Temperature Robustness:
The AZ20’s ceramic-to-steel bonding process ensures stability in thermal shock conditions (e.g., rapid temperature changes in incinerators), outperforming traditional brazed designs 9. Its zirconium oxide sensor, with a proven 50+ year track record, delivers stable readings even in sulfurous or reducing atmospheres, making it ideal for waste-to-energy plants and sulfur recovery units .
The AZ20’s ceramic-to-steel bonding process ensures stability in thermal shock conditions (e.g., rapid temperature changes in incinerators), outperforming traditional brazed designs 9. Its zirconium oxide sensor, with a proven 50+ year track record, delivers stable readings even in sulfurous or reducing atmospheres, making it ideal for waste-to-energy plants and sulfur recovery units .
Smart Calibration and Diagnostics:
The integrated auto-calibration system automates test gas flow and sequence, eliminating manual intervention and reducing calibration errors. Built-in Namur-compliant diagnostics provide clear text alerts for sensor fouling, heater failure, or communication issues, enabling predictive maintenance and minimizing downtime 9.
The integrated auto-calibration system automates test gas flow and sequence, eliminating manual intervention and reducing calibration errors. Built-in Namur-compliant diagnostics provide clear text alerts for sensor fouling, heater failure, or communication issues, enabling predictive maintenance and minimizing downtime 9.
Modular Serviceability:
Field technicians can replace the zirconium cell or thermocouple on-site using basic tools, thanks to the easy-access probe design . Spare parts kits (e.g., cell replacement kit AZ200 700) ensure rapid repairs, while ABB’s global service network offers 24/7 support for critical applications .
Field technicians can replace the zirconium cell or thermocouple on-site using basic tools, thanks to the easy-access probe design . Spare parts kits (e.g., cell replacement kit AZ200 700) ensure rapid repairs, while ABB’s global service network offers 24/7 support for critical applications .
Flexible Integration:
With Hart and Modbus RTU support, the AZ20 interfaces seamlessly with ABB’s AC800M DCS or third-party systems. Its multi-language HMI and through-the-glass control simplify configuration without opening the enclosure, reducing operational complexity 9.
With Hart and Modbus RTU support, the AZ20 interfaces seamlessly with ABB’s AC800M DCS or third-party systems. Its multi-language HMI and through-the-glass control simplify configuration without opening the enclosure, reducing operational complexity 9.
Cost-Effective Operation:
By optimizing combustion efficiency, the AZ20 helps customers achieve 5–10% fuel savings in boiler systems. Its low-maintenance design and 1-year warranty further reduce lifecycle costs compared to competing analyzers 5.
By optimizing combustion efficiency, the AZ20 helps customers achieve 5–10% fuel savings in boiler systems. Its low-maintenance design and 1-year warranty further reduce lifecycle costs compared to competing analyzers 5.
Application Areas
Power Generation:
Deployed in coal-fired power plants and gas turbines, the AZ20 monitors oxygen levels to balance fuel-air ratios, improving combustion efficiency and reducing NOx emissions. For example, in a 500 MW coal plant, accurate oxygen control can save over 10,000 tons of CO₂ annually 9.
Deployed in coal-fired power plants and gas turbines, the AZ20 monitors oxygen levels to balance fuel-air ratios, improving combustion efficiency and reducing NOx emissions. For example, in a 500 MW coal plant, accurate oxygen control can save over 10,000 tons of CO₂ annually 9.
Industrial Boilers:
Used in refineries and chemical plants, the analyzer ensures optimal burner performance in steam boilers, minimizing unburned fuel and scaling. Its high-temperature resistance makes it suitable for ethylene cracking furnaces operating at 800°C 16.
Used in refineries and chemical plants, the analyzer ensures optimal burner performance in steam boilers, minimizing unburned fuel and scaling. Its high-temperature resistance makes it suitable for ethylene cracking furnaces operating at 800°C 16.
Waste Incineration:
In municipal waste incinerators, the AZ20 verifies compliance with EU emissions standards (e.g., 2010/75/EU) by monitoring oxygen levels in flue gases. Its auto-calibration system ensures reliable data even in corrosive environments 9.
In municipal waste incinerators, the AZ20 verifies compliance with EU emissions standards (e.g., 2010/75/EU) by monitoring oxygen levels in flue gases. Its auto-calibration system ensures reliable data even in corrosive environments 9.
Metallurgy:
Applied in steel mills and aluminum smelters, the analyzer controls oxygen injection in blast furnaces and annealing ovens, enhancing energy efficiency and reducing slag formation. Its rugged probe design withstands high particulate loads in steelmaking processes 16.
Applied in steel mills and aluminum smelters, the analyzer controls oxygen injection in blast furnaces and annealing ovens, enhancing energy efficiency and reducing slag formation. Its rugged probe design withstands high particulate loads in steelmaking processes 16.
Combined Heat and Power (CHP):
Integrated into CHP systems, the AZ20 optimizes gas engine combustion, maximizing electricity and heat output while minimizing methane slip. Its fast response time supports dynamic load changes in decentralized energy grids 5.
Integrated into CHP systems, the AZ20 optimizes gas engine combustion, maximizing electricity and heat output while minimizing methane slip. Its fast response time supports dynamic load changes in decentralized energy grids 5.
Related Products
- ABB AZ10: A single-channel oxygen analyzer with PID control, ideal for smaller boilers or standalone applications requiring basic regulation.
- ABB S800 I/O Modules: Expandable I/O modules for analog/digital signals, enhancing the AZ20’s scalability in DCS setups.
- ABB AC800M Controller: A higher-tier DCS controller integrating with the AZ20 for hierarchical process management in power plants.
- ABB CI858K01: A drive bus interface module enabling communication between the AZ20 and ABB drives via Profibus DP.
- ABB AX411/50001: A dual-channel conductivity transmitter for water treatment systems, often paired with the AZ20 in combined gas-liquid analysis applications.
Installation and Maintenance
Installation Preparation:
Before installing the AZ20, verify the flue duct temperature (must not exceed 800°C) and select the appropriate probe length (0.5–4.0 m) based on duct diameter. Mount the remote transmitter on a 35 mm DIN rail in a control cabinet with IP65 environmental protection, ensuring 20 mm clearance for heat dissipation. Connect the probe to the transmitter using ABB-supplied cables (max. 100 m length) and configure Modbus RTU settings (baud rate: 9600–115200 bps) via ABB’s Automation Builder software 6.
Before installing the AZ20, verify the flue duct temperature (must not exceed 800°C) and select the appropriate probe length (0.5–4.0 m) based on duct diameter. Mount the remote transmitter on a 35 mm DIN rail in a control cabinet with IP65 environmental protection, ensuring 20 mm clearance for heat dissipation. Connect the probe to the transmitter using ABB-supplied cables (max. 100 m length) and configure Modbus RTU settings (baud rate: 9600–115200 bps) via ABB’s Automation Builder software 6.
Maintenance Recommendations:
- Routine Checks: Inspect monthly for loose connections or sensor fouling. Use the transmitter’s LED indicators to verify power, communication, and fault status.
- Sensor Calibration: Calibrate annually using traceable standard gases (e.g., 20.9% O₂ for air). Replace the zirconia cell if drift exceeds ±0.5% O₂ 14.
- Heater Maintenance: Check heater resistance quarterly (nominal value: 20–50 Ω) to prevent thermal stress issues. Replace the heater assembly (part no. AZ200 734) if faulty 15.
- Firmware Updates: Periodically update firmware via ABB’s Online Support Portal to access new features like enhanced temperature compensation algorithms.
- Environmental Monitoring: Ensure ambient humidity remains below 95% non-condensing and clean dust from the transmitter vents quarterly.
Product Assurance
ABB guarantees the AZ20 against defects in materials and workmanship for 1 year from the date of purchase. The company provides global technical support, including 24/7 troubleshooting assistance and remote diagnostics via Hart communication. ABB’s network of certified service centers ensures prompt repairs and replacements, while online resources (e.g., user manuals, calibration guides) support ongoing system optimization. With a commitment to sustainability, ABB’s products undergo rigorous testing to meet ISO 14001 environmental standards, ensuring the AZ20 delivers reliable performance with minimal ecological impact 5.
For detailed technical documentation or to inquire about inventory, contact your local ABB representative or visit the ABB eFinder portal.
Note: While the AZ20 is a versatile analyzer, always verify compatibility with your system’s specific requirements (e.g., probe length, gas composition) before deployment.
HS:9027100090
Contact info
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- Email: sandydcsplc@gmail.com
- Phone: +86 18030182217
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