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Key features
  • Compact design 
  • Performs in high particulate environments 
  • Minimal cross interference 
  • Diverse mounting: ideal for ducts, stacks and reactor installations 
Easy to use
Low cost of ownership
Unrivalled performance
Benchmark compliance

The SERVOTOUGH Laser 3 Plus Process is a revolution in Tunable Diode Laser (TDL) Absorption Spectroscopy analysis: a highly compact gas monitor for in-situ cross stack applications, which delivers exceptional performance benefits in a revolutionary compact design. 

Servomex’s pioneering approach to design has produced an analyzer that occupies a footprint up to 1/10th the size of competitor products. This provides instant benefits in terms of installation ease and flexibility. 

The Laser 3 Plus Process delivers exceptional TDL performance, with a fast response optimized for the measurement of O2 in a wide range of applications. Utilizing the latest Wavelength Modulated Spectroscopy (WMS) measurement techniques with unique Servomex signal processing, the Laser 3 Plus provides the most stable, repeatable results with minimal installation
and maintenance costs.

    131mm width (51/8”) 164mm high (61/2”) 302.4mm deep (119/10”) 
    110mm width (45/16”) 146mm high (53/4”) 247.6mm deep (93/4”) 
  • TRANSMITTER: <3.0 kg (6.6 lbs) 
  • RECEIVER: <2.0 kg (4.4 lbs) 
  • ATEX Cat 3 (Gases)
  • IECEx Zone 2 and Zone 21 
  • North American Class 1 Division 2 and Zone 2 (Gas and Dust) pending 
  • ATEX Cat 21 (Dust)
  • Safe Area / General Purpose 
  • CE marked in compliance with ATEX, EMC, LVD and all other applicable directives 




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Key Applications
  • Oxidation control
  • Inerting
  • Safety monitoring
  • Process control
  • Flare gas monitoring
  • Combustion control (<500°C)
  • Coal to chemical
Service and Spares

Ensure your SERVOTOUGH Laser 3 Plus Process analyzer delivers optimum performance with Servomex Service Network.

Through our global network of engineers and service centers, we provide complete lifetime support for your analyzer. Our services range from installation and commissioning to supplying high quality spares and arranging scheduled servicing: visit our Service Network pages to find out more.

Global Service Network