Compact TDL Analyzer | SERVOTOUGH Laser 3 Plus Process

The compact Laser 3 Plus Process for rapid, precise process control measurement.

The Laser 3 Plus Process Tunable Diode Laser (TDL) analyzer delivers all the advantages of Servomex’s TDL Absorption Spectroscopy technology in a small, lightweight unit, providing unmatched installation flexibility along with cost and performance advantages.

The Laser 3 Plus TDL is designed for fast, accurate, and responsive measurement of process oxygen (O₂) under hot or hazardous conditions.

• A groundbreaking method for TDL gas analysis
• Low maintenance, reduced cost-of-ownership
• High-performance monitoring.

Overview

Process Gas Analysis with Unique Features and Low Cost-Of-Ownership

The SERVOTOUGH Laser 3 Plus Process is an extremely compact gas analyzer designed for in-situ cross-stack applications, offering outstanding performance advantages within a state-of-the-art small-form design. Its novel construction uses a footprint up to ten times smaller than competing products, delivering immediate gains in installation ease and flexibility.

Employing advanced Wavelength Modulated Spectroscopy (WMS) measurement methods combined with Servomex’s proprietary signal processing, it delivers highly stable and repeatable O₂ measurements while keeping installation and maintenance costs to a minimum.

A Revolutionary Approach to TDL Gas Analysis

By integrating the newest hardware innovations with advanced software processing, the SERVOTOUGH Laser 3 Plus marks a major advancement in TDL gas analysis. Servomex has reimagined TDL analysis, developing an analyzer that is significantly smaller in size while maintaining full performance. The outcome is a TDL analysis that installs more easily and quickly, conserving valuable space while delivering substantially greater installation flexibility.

Low Maintenance, Low Cost-of-Ownership

The next-generation ethos of the Laser 3 Plus is focused on lowering costs at every stage, alongside the inherent benefits of TDL technology – a non-depleting measurement that requires no sample conditioning system. The compact Laser 3 Plus design significantly reduces installation time, using small, lightweight, and intuitive alignment for straightforward installation and maintenance. Complete Ethernet communications support commissioning, diagnostics, and troubleshooting.

Image Credit: Servomex

High Performance Monitoring

The hardware innovations of the Laser 3 Plus are complemented by advanced Wavelength Signal Modulated Spectroscopy (WSMS) processing software, which removes drift over long operating periods by automatically locking onto a sealed reference cuvette absorption line using Line Lock Technology.

This durable tracking approach delivers highly dependable and precise operation over extended durations, with calibration intervals extended beyond twelve months for many applications. The outcome is a reliable, general-purpose, and hazardous-area-optimized design that enables the Laser 3 Plus to perform reliably in the most demanding locations, including environments with high particulate levels.

Image Credit: Servomex

Features and Benefits

Optimized For Process Oxygen Measurements

The Laser 3 Plus Process is a compact TDL analyzer that offers a broad set of features and advantages, with a rapid and accurate response to fluctuations in O₂ levels.

A Compact Design

The Laser 3 Plus Process is sufficiently compact to allow for straightforward installation by a single engineer, while the integrated display eliminates the need for laptop-based configuration.

Reliable Measurements

Incorporating Servomex’s proprietary line lock cuvette technology, the Laser 3 Plus Process maintains reliable oxygen measurement to support high safety integrity.

Approved For Hazardous Conditions

The Laser 3 Plus Process holds ATEX, IECEx, and North American hazardous area certifications, is approved for Zone 2, SIL 2 evaluation, and is CE marked.

Unrivalled Performance

• Calibration six to 12 months
• Process temperatures up to 500 °C
• Low detection threshold
• Negligible zero drift
• Quick response

Flexible

• Compact design
• Versatile mounting: ideal for ducts, stacks, and reactor installations
• Operates in high particulate environments
• Minimal cross-interference

Easy to Use

• Straightforward installation and operation
• Digital communications
• Robust and reliable
• Compact
• Modbus over Ethernet
• User-friendly interface with quick disconnect for simple calibration

Low Cost of Ownership

• Intuitive alignment for easy installation and maintenance
• No sample conditioning system – reduced maintenance costs
• Non-depleting TDL technology
• No moving components, no consumables
• No hazardous area purge needed

Benchmark Compliance

• North American hazardous area Class 1 Div 2
• ATEX, IECEx hazardous area approvals
• CE approved
• IP66
• SIL 2

Specifications

The SERVOTOUGH Laser 3 Plus Process is designed for measuring process oxygen in applications operating under hot or hazardous conditions.

Source: Servomex

Technologies

• Tunable Diode Laser

Certificates

• Safe Area / General Purpose
• ATEX Cat 3 (Gases)
• IECEx Zone 2 and Zone 21
• CE marked in compliance with ATEX, EMC, LVD, and all other applicable directives
• North American Class 1 Division 2 and Zone 2 (Gas and Dust) pending
• ATEX Cat 21 (Dust)

Schematics

Image Credit: Servomex

Image Credit: Servomex

Size

Transmitter: 131mm width (5 1/8”), 164mm high (6 1/2”), 302.4mm deep (11 9/10”)

Receiver: 110mm width (4 5/16”), 146mm high (5 3/4”), 247.6mm deep (9 3/4”)

Weight

Transmitter: < 3.0 kg (6.6 lbs)

Receiver: < 2.0 kg (4.4 lbs)