Tunable Diode Laser Spectroscopy | TDLAS


  • ICI’s Tunable Diode Laser Absorption Spectrometer (T.D.L.A.S.) is an innovative long-range detector which allows methane gas (CH4) to be detected at distances of up to 50 m at as little volume as 1 pmm.m.
  • Methane leaks are located by pointing the laser beam towards the suspected leak, or along the survey line.
  • Detects methane by emitting infrared light and examining reflected light density.
  • Our T.D.L.A.S. system is ideal for use in industrial, commercial and research environments where it can be fixed mounted or attached to an aerial vehicle.

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tdlas tunable diode laser absorption spectrometer
  • Image of red star Ultra low power consumption
  • Image of red star Detection distance up to 50 m
  • Image of red star High stability
  • Image of red star Fast response
  • Image of red star UAV/UAS integration


  • Target Gas: Methane (CH4)
  • Measurement Range: 0 pmm.m to 40,000 pmm.m
  • Detection Distance: 0.5 m (1.6’) – 50 m (164’)*
  • Minimum Resolution: 1 ppm.m
  • Response Time: 0.5 seconds
  • Operating Pressure: 68 kPa – 115 kPa
  • Operation Range: -20 °C to 50 °C
  • Storage Range: -40 °C to 60 °C
  • Humidity: 98%
  • Dimensions: 39 mm x 45 mm x 45 mm (L x W x H +/- .5 mm)
  • Power: DC 4.2V – 5V, < 1 W
  • Weight (without lens): 664 g
  • Interface: USB 2.0
  • Communication Port: Uart 3.3 V TTL
  • Basic Tolerance: ± 10 % @ 1000 pmm.m



  • Ici Tdlas Data Specifications

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Options / Accessories

  • Sensor Control Module integration


  • Methane detection
  • Gas leak detection
  • UAV integration
  • Pipeline inspections
  • Industrial monitoring
  • Petrochemical monitoring
  • Scientific research
  • Research & development
  • Space reseach & exploration

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