GasFinder2-OP: Portable Open-Path TDL Analyzer


  • Tilt-Pan Programmable Scanner w/ Tripod

    The usefulness of the GasFinder2 detector is now greatly increased with the addition of an automated scanning mount that enables full 360° horizontal and 120° vertical scanning. GasFinder response does not depend on path length. Therefore, multiple paths can be monitored in rapid succession by deploying a number of reflector targets. Between 5 and 10 paths can be scanned within one minute. The path integrated concentrations measured can then be analyzed by plume mapping or tomographic software packages to provide, for example:

    • real-time vertical concentration profiles and measurements of actual fluxes (when combined with wind data) from area sources;
    • identification of hot spots using horizontal scans.



    Weight: 11.5 kg

    Dimensions (L x W x H): 26 x 20 x 16 cm

    Power Requirements: 18.2W @ 9 – 30 VDC

    Ambient Temperature: -30°C to +50°C

    Ingress Protection: IP 67

    Tilt range: -30° to +90°

    Pan range: 360° continuous

    Positioning accuracy: 0.00643°

  • Heavy Duty Tripod

    The portable nature of the analyzer is now greatly increased with the addition of the heavy duty tripod. The Portable Open-Path Analyzer response does not depend on path length so the system can easily and quickly be deployed in under 5 minutes. The tripods construction is sturdy enough to maintain alignment on paths up-to-600m.


  • “Bulls-eye” Flow-Through Cell

    This innovative tool can serve two different purposes:

    • Variable gas or concentration reference cell that can be utilized by the end user to bump their system
    • In-line measure tool that can be used with a number of our measurement heads to accurately quantify the gas concentration flowing through the “bulls-eye”

    A number of different options or configurations are available so please contact for more details


  • Response Cell

    Boreal now supplies a range of Gas Response Cells to enable clients to confirm the response of open path systems to a nominal concentration of target gas introduced into the measurement path. This is especially useful for leak detection system installations where the concentration of target gas in the path is zero, and quality assurance procedures require periodic “bump” testing of safety critical instrumentation.

    The response cell is constructed from an passivated copper body and gas resistant windows and window seals. The response cell is filled to a nominal target concentration and then sealed. The response cell is available in both 1‐inch and 3‐inch aperture versions. The 1‐inch version is used for bump testing of the HF Point Detector. The 3‐inch version is used for bump testing of the Portable Open-Path TDL Analyzer and Multi-Channel installations. Both response cells are supplied in hard plastic cases with foam packing material for ease of storage and transportation. It is recommended that response cells be returned to Boreal for factory recertification once every two years or with the frequency required by facility quality assurance and safety procedures.


  • Red/White Tape Retro-Reflector

    The tape comes in 16m rolls x 50mm wide. The tape is divided into red and silver bands and each have different reflective properties. The tape is adhesive backed and can easily be attached to any smooth, dry surface. It is often stuck to the back or side of a retro enclosure.

  • Gray Tape Retro-Reflector

    Grey Tape comes in sheets 200 x 300mm. It is adhesive backed and can easily be attached to any smooth, dry surface. It is often stuck to the back of a retro enclosure.

  • IMOS Retro-Reflector

    These are multi-faceted IMOS 46mm hexagons. They can be fitted together to make up a large composite array.


  • Gold Corner Cube Retro-Reflector

    This is a gold plated hexagonal retro. It is normally housed in a plastic or steel box with a Lexan window. They can also be fitted together to make up a large composite array.


  • Power Supplies

    A number of different configuration options are possible for powering your Fibre-Coupled Analyzer:

    • 120/220 VAC Power Supply
    • 12 VDC Alligator Clips
    • Solar Power Supply Kit

    Single Channel Power Supply

  • Wireless Communication Module

    In some circumstances it may be convenient to send the data output of the Portable Open-Path Analyzer to a computer which is not connected directly to the Portable Open-Path Analyzer. For this purpose Boreal has produced a combination power supply and radio modem kit called BL-PSM1.

    Wireless comm

  • Meteorological Station

    The standard sensor package includes 6 weather parameters:

    • Wind speed and direction,
    • Temperature and relative humidity,
    • Barometric pressure, and
    • Precipitation
    • More optional sensor can be added

    Novalynx Weather Station

  • 3D Ultrasonic Anemometer

    This measures three dimensional wind velocity and speed of sound based on the transit time of ultrasonic acoustic signals. Sonic temperature is derived from speed of sound which is corrected for crosswind effects.

    Measurement data are available as serial output using RS-232 or RS-485 connections. A variety of serial output formats are available including a custom format which is easily set by the user. Four voltage output channels representing sonic temperature and wind in either Cartesian or Polar coordinates are also provided.

    RM Young 3D Ultrasonic Anomometer

  • Vortex Cooler

    Boreal Laser recommends that if the Portable Open-Path Analyzer is going to be installed in ambient temperatures in excess of 40°C then a Vortex Cooler should be installed to keep the electronics from over heating. The analyzer could lose accuracy if the maximum operating temperature is exceeded.

    Compressed air driven cooler for the Portable Open-Path steel enclosure. An on-off unit including cooling unit, filter with auto drain, cold air distribution kit, solenoid valve and thermostat. Provides 322 Watts cooling with 100 psig compressor inlet pressure.

    Vortex Cooler