AO2000 LS25 – ABB Tunable Diode Laser Analyzer

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AO2000 LS25 – ABB Tunable Diode Laser Analyzer for Continuous Gas Monitoring

The ABB AO2000 LS25 laser analyzer is an advanced TDLAS (Tunable Diode Laser Absorption Spectroscopy) instrument engineered for real-time, in-situ gas measurement in industrial environments. This non-contact analyzer offers fast response, high selectivity, and long-term stability, making it ideal for process control and emission monitoring. Built on ABB’s robust AO2000 platform, the LS25 integrates cutting-edge optics and intelligent diagnostics, delivering precise gas readings even in harsh conditions.


📘 Technical Datasheet – AO2000 LS25

🔍 Specification Details
📦 Model AO2000 LS25
🏷 Analyzer Type Tunable Diode Laser (TDLAS)
📡 Measurement Method In-situ, cross-duct or probe-style
🧪 Measured Gases NH₃, HCl, CO, H₂O, O₂, HF, etc.
🎯 Detection Range ppm to % levels, depending on gas
Response Time < 2 seconds (T90)
💡 Light Source Semiconductor laser, near-IR wavelength
🔌 Power Supply 100–240 V AC, 50/60 Hz
🌡 Ambient Temperature -20°C to +55°C
💻 Interface Modbus TCP/IP, 4–20 mA, HART
⚙️ Mounting Configuration Flange-mounted / probe-insertion
🧰 Housing IP65, corrosion-resistant aluminum
🔧 Maintenance Minimal, no moving parts
🛡 Self-Diagnostics Yes, with real-time signal monitoring

⚙️ Key Features & Operational Benefits

  • 📶 Ultra-Fast Response
    With a T90 response time of under 2 seconds, the LS25 ensures immediate feedback for process control loops and safety shutdown mechanisms.
  • 🎯 High Gas Selectivity
    The TDLAS method allows precise measurement of single gas species, eliminating cross-interference from other components in the gas stream.
  • 🔍 Non-Contact Optical Sensing
    Using laser light that passes directly through the gas, there is no sensor contact with corrosive media, extending system longevity and reducing maintenance needs.
  • 🧠 Smart Diagnostics
    Built-in health monitoring ensures system integrity and reduces unplanned downtime by identifying optical drift or signal obstructions early.
  • 🌍 Industrial-Grade Design
    Engineered for demanding field environments such as cement kilns, power plants, and chemical refineries. The IP65 enclosure ensures protection against dust and water ingress.
  • 🧩 Integration Flexibility
    Supports various digital and analog communication protocols to seamlessly connect with existing DCS, PLC, or SCADA platforms.

🌐 Typical Application Scenarios

The AO2000 LS25 excels in continuous gas monitoring applications where precision, speed, and ruggedness are critical:

  • 🏭 Power Generation – Ammonia slip and oxygen monitoring in SCR systems
  • 🧪 Chemical Industry – HCl detection in incinerators and process stacks
  • 🧱 Cement & Lime Plants – CO and H₂O monitoring at kiln outlets
  • 🔥 Refineries – HF and CO leak detection in flue gas ducts
  • 🚧 Environmental Compliance – Real-time stack gas emission reporting

Its low-maintenance design and wide measurement range make it a preferred analyzer for both regulatory and process control environments.


📰 Industrial Trends

Laser-based gas analysis continues to gain adoption as industries transition to predictive maintenance and real-time process optimization. As stricter environmental legislation tightens around industrial emissions, instruments like the AO2000 LS25 are becoming essential for compliance and operational efficiency. ABB’s laser platforms are also driving digitalization through self-diagnostics, remote configuration, and data-driven performance insights.


🔧 Recommended Alternative Products

🔢 Model 🧩 Description ⚙️ Platform Compatibility
AO2000 Uras26 NDIR gas analyzer for multiple gases AO2000 Series
EL3060 Compact continuous emission monitor (CEM) SmartCEM System
AO2000 LS4000 Enhanced TDLAS for multi-gas measurements Advanced AO platform
ACF5000 Extractive FTIR multi-component analyzer Integrated CEMS
AO2000 O2-Module Paramagnetic O₂ sensor module AO2000 System

Discover more ABB analyzer modules at FY Module to meet your plant’s real-time gas analysis needs.

Explore the full range of ABB analyzers and automation components at www.fy-module.com, including both new and legacy model support.


Need help selecting the right laser analyzer for your industrial application? I can help generate a product comparison sheet or configure a complete analyzer setup tailored to your site conditions. Let me know!

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