ABB AO2020
ABB AO2020 - Image 2

ABB AO2020

Product Overview:
The ABB AO2020 is a high-performance, continuous non-dispersive infrared (NDIR) gas analyzer designed for precise industrial process monitoring. It is engineered to accurately detect and measure the concentration of various gas components in continuous gas or vapor streams, providing critical data for optimizing chemical processes and ensuring environmental compliance.

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Category: SKU: ABB AO2020

Description

ABB AO2020

Technical Specifications:

  • Target Gases: Capable of analyzing CO, CO2, NO, SO2, NH3, H2O, CH4, H2S, and other hydrocarbons.
  • Power Supply: Universal input supporting 100-240 VAC ±10%, 48-63 Hz.
  • Power Consumption: Approximately 40 VA for a single-channel configuration and 70 VA for a dual-channel configuration.
  • Analog Output: 0/2/4-20 mA output with a maximum load capacity of 750 Ω.
  • Response Time: Rapid response with a T90 time of less than 3 seconds.
  • Measurement Range: Features up to 4 automatic switching ranges (e.g., H2S: 0-100 ppm, 0-1000 ppm).

Functional Features:

  • Advanced Infrared Technology: Utilizes non-dispersive infrared absorption principles to provide highly selective and accurate gas concentration measurements.
  • Intelligent Self-Diagnostics: Features comprehensive self-diagnostic capabilities and automatic calibration/cleaning functions to minimize maintenance and maximize uptime.
  • Seamless Integration: Designed for easy integration with various control systems and data processing software, supporting remote monitoring and diagnostics.
  • Multi-Range Auto-Switching: Automatically selects the appropriate measurement range based on gas concentration to ensure optimal accuracy.

Application Scenarios:

  • Continuous emission monitoring systems (CEMS) for environmental compliance.
  • Combustion control in industrial boilers to optimize fuel-to-air ratios.
  • Chemical synthesis processes, such as ammonia production, to monitor hydrogen and ammonia ratios.
  • Safety monitoring in petrochemical and pharmaceutical facilities.

Performance Parameters:

  • Linearity Error: Excellent linearity at ±0.5% Full Scale (FS).
  • Measurement Drift: Highly stable with a drift of ±1% FS per week.
  • Minimum Detectable Limits: Capable of measuring low ranges such as CO (0-10 ppm) and CO2 (0-5 ppm).
  • Weight: Approximately 15 kg for a single-channel unit and 21 kg for a dual-channel unit.

Material Composition & Structural Characteristics:

  • Optical Bench: Features a precision optical system with an infrared light source, beam splitter, and gas-specific optical detectors.
  • Enclosure: Ruggedized, waterproof, and anti-corrosion housing designed to withstand harsh industrial environments.
  • Safety Design: Complies with EN61010 standards for electrical measurement equipment safety, featuring secure grounding terminals and protected internal charging capacitors.
  • User Interface: Intuitive front panel with a backlit graphical display and simplified menu navigation.

Working Principle:
The analyzer operates on the NDIR principle, where specific gas molecules absorb infrared light at distinct wavelengths (typically 2.5-8 μm). An infrared source emits light that is split into a measurement beam (passing through the sample gas) and a reference beam (passing through non-absorbing N2). The attenuation of the measurement beam compared to the reference beam is measured by specialized detectors, and this differential signal is mathematically converted into the precise concentration of the target gas.

Installation Requirements:

  • Gas Path Optimization: The sampling line and pretreatment system must be kept as short as possible to minimize response delay.
  • Ventilation: Ensure sufficient air circulation around the analyzer to prevent heat buildup and the accumulation of hazardous gases. Maintain a one-rack distance between multiple units.
  • Environmental Limits: Install in areas protected from direct sunlight, extreme temperatures, strong air convection, dust accumulation, and excessive vibration (max acceleration 0.01 m/s² at 0.1-200 Hz).
  • Grounding: The equipment must be properly grounded before any other wiring is connected to ensure personnel and equipment safety.

Usage Precautions:

  • Qualified Personnel: Installation, startup, operation, and maintenance must only be performed by qualified and trained personnel.
  • Electrical Safety: Always disconnect all power sources before opening the enclosure. Internal charging capacitors retain dangerous voltages and require 10 minutes to fully discharge after power-off.
  • Non-Explosive: Standard AO2020 units are non-explosion-proof and must not be installed in explosive gas environments.
  • Fuse Protection: Always use fuses with the exact specified breaking current; never short-circuit or bypass the fuse mechanism.

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