ABB MAO2020-Limas21 Multicomponent UV Gas Analyzer
| Brand | ABB |
|---|---|
| Origin | USA |
| Manufacturer Type | Authorized Distributor |
| Origin Category | Imported |
| Model | MAO2020-Limas21 |
| Pricing | Upon Request |
Overview
The ABB MAO2020-Limas21 is a high-precision, multicomponent ultraviolet (UV) gas analyzer engineered for continuous, real-time quantification of nitrogen oxides (NO, NO₂) and ammonia (NH₃) in industrial emission streams, automotive exhaust, and ambient air monitoring applications. It operates on the principle of UV Resonance Absorption Spectroscopy (UV-RAS), a selective optical detection method that exploits narrow-band electronic transitions of target molecules in the deep UV to visible spectral range (200–600 nm). Unlike broadband NDIR or electrochemical sensors, UV-RAS delivers inherent selectivity for NO without cross-sensitivity to CO₂, H₂O vapor, or hydrocarbons—critical for compliance-grade measurements under EPA Method 21 and ISO 15714. The instrument integrates into the modular MAO2000 platform, allowing seamless co-installation with IR, paramagnetic O₂, TCD, FID, laser, or electrochemical modules for comprehensive multi-gas analysis within a single rack-mounted chassis.
Key Features
- UV-RAS optical engine optimized for NO, NO₂, and NH₃ detection with minimal spectral interference
- Configurable measurement ranges: 0–100 ppm, 0–500 ppm, 0–2500 ppm, and 0–5000 ppm—user-selectable per channel
- Measurement accuracy: < ±1% full scale (FS) or < ±2% of reading (per U.S. EPA automotive exhaust verification criteria)
- High repeatability: ≤0.25% FS; zero drift: ≤1 ppm or ≤1% of span per 24 hours (whichever is smaller, based on minimum recommended range)
- Sensitivity stability: ≤1% of reading per week—ensuring long-term calibration integrity
- Graphical backlit display (320 × 240 pixels) with intuitive soft-key navigation and multilingual UI support (English, German, Spanish, French)
- Dedicated LED status indicators: green (power active), yellow (maintenance due), red (fault condition)
- Front-panel interface: six function soft keys, two cancel keys, and ten numeric keys for local configuration and diagnostics
- Robust industrial housing rated for continuous operation in demanding stack or ambient monitoring environments
Sample Compatibility & Compliance
The MAO2020-Limas21 is designed for extractive sampling of hot, humid, or particulate-laden gas streams when paired with appropriate conditioning systems (e.g., heated sample lines, Peltier coolers, and particle filters). It complies with key regulatory frameworks governing emissions monitoring, including U.S. EPA Performance Specification 18 (PS-18) for NOₓ analyzers, EN 15267-3 for QAL1 certification, and ISO 14064-3 for GHG verification support infrastructure. Its UV-RAS architecture satisfies the selectivity requirements of ASTM D6522 (Standard Test Method for Determination of Nitrogen Oxides in Emission Sources) and supports GLP/GMP-aligned data integrity when integrated with compliant data acquisition systems. The analyzer does not require consumables such as scrubbers or reference gases during normal operation—reducing lifecycle cost and maintenance frequency.
Software & Data Management
The analyzer supports native RS-232/RS-485 serial communication and optional Ethernet/IP or Modbus TCP interfaces for integration into SCADA, DCS, or centralized EMS platforms. ABB’s proprietary MAO Configuration Suite enables remote setup, calibration validation logging, and diagnostic reporting—including automatic generation of audit trails for critical events (e.g., zero/span initiation, parameter changes, fault resets). When deployed in regulated environments, the system can be configured to meet FDA 21 CFR Part 11 requirements via third-party validated software layers, ensuring electronic record authenticity, user access control, and non-erasable calibration history. All measurement data are timestamped with millisecond resolution and stored internally for up to 30 days (circular buffer), with export options in CSV or XML formats compatible with LIMS and environmental reporting portals.
Applications
- Continuous Emissions Monitoring Systems (CEMS) for coal-fired, gas-turbine, and waste-to-energy power plants
- Automotive R&D and certification testing—especially for SCR and EGR system validation under transient dynamometer cycles
- Industrial process control in nitric acid production, fertilizer manufacturing, and semiconductor cleanroom purge gas monitoring
- Ambient air quality networks requiring speciated NOₓ differentiation (NO vs. NO₂) and NH₃ tracking near agricultural zones or urban transport corridors
- Research laboratories conducting atmospheric chemistry studies, catalyst efficiency evaluation, and photochemical smog chamber experiments
FAQ
What gases does the MAO2020-Limas21 specifically measure?
It measures nitric oxide (NO), nitrogen dioxide (NO₂), and ammonia (NH₃) simultaneously using UV-RAS technology.
Does it require zero/span calibration gases?
Yes—periodic calibration with certified NO, NO₂, and NH₃ standard gases is required per regulatory protocols (e.g., EPA PS-18 mandates daily or semi-daily checks depending on application class).
Can it operate in high-humidity sample streams?
Yes, provided the sample gas is conditioned to dew point < 5°C prior to optical cell entry—typically achieved using chilled mirrors or permeation dryers.
Is the analyzer suitable for Class I, Division 1 hazardous locations?
No—the standard MAO2020-Limas21 is rated for non-hazardous area installation; ABB offers explosion-proof variants (e.g., MAO2020-Limas21-Ex) certified to ATEX and IECEx standards upon request.
How is measurement linearity verified?
Linearity is validated using at least five certified concentration points across the selected range, with residuals analyzed per ISO 6145-7 and reported in the factory calibration certificate.
