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Boreal Multi-channel TDL
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Multi-Channel TDL Analyser

The Boreal GasFinder MC is a multi-path system for monitoring a maximum of eight paths at one time. Each path could be stack/duct, open or process, or even a combination of these. The GasFinder MC is mostly used for fixed installations and in hazardous areas.

Via the multi-path features of GasFinder MC, it is now possible to provide complete perimeter coverage at relatively low cost. This unit is gas specific, meaning there are no interferences. With path lengths from one to 500 metres and response times as fast as one second, this multiple path open path gas detection unit is robust, reliable and proven. It also offers easy set-up, no calibration needs and no consumables. With built-in self-diagnostics, this gas detection system is convenient and low maintenance.

Both the GasFinder as well as the GasFinder MC utilise the Tunable Diode Laser (TDL) technology. The GasFinder MC is has a Central Control Unit which is contained within a 19 inch rack cabinet. Also contained within the unit are drive electronics, microcomputers, the laser diode, and the detector signal processor. The last light is transported to the transmitter heads via a fiberoptic cable, the beam is then director along a path to the reflector. The light that is returns is then collected on a non-biased photodetector.

The device can be used for a range of industrial applications basically as a complete monitoring solution. Three configurations, each geared towards a certain application are possible of the transmitter heads. One option is an Open Path Remote Head that can be used to roofline monitoring, emergency or leak monitoring and long path monitoring. A Cross Duct Probe is perfect for monitoring of large diameter stack or duct based process control. An ASA 200 flange will fit the cross duct probe by design. An In-Situ Probe option comes up to a meter long and is good at stack monitoring whilst the Extractive Multipass Cell has the capability to allow gas samples to be removed from the process and then analysed offline. 10 metres of path length is provided by the multipass cell.

Boreal Multi Channel TDL Analysers deliver accurate readings even after repeated high concentration gas exposures.

Boreal Multi-Channel TDL Analyser Features

  • Built-in data logger and historian
  • Minimal maintenance
  • Fast response times
  • Low cost of ownership
  • No interference with other gases
Boreal Multi-channel TDL Open Path Gas Detector - Large

Technical Specifications

Multi-Channel TDL Analyser Technical Specifications
Number of channel2,4,8
Response Time (Scan rate)1 reading/sample per second
Sensitivityspecification varies depending on gas and application
Accuracy2% of reading
Uncertainty5% of accuracy
Dynamic Range4 orders of magnitude
Measurement Path Length0.1 to 750 m (head specific)
Data I/ORS-232/485, MODBUS, TCP/IP, 4-20 mA, Dry-Contact Relays
Eye SafetyClass I approved
Analyser Weight12.0 kg (26.4 lbs)
Analyser Dimensions(LxWxH): 440 x 380 x 130mm (17.3 x 15.0 x 5.1in)
Data OutputSerial Communication (RS-232)
Power Requirement1A @ 100 to 250 VAV
Ambient Temperature10°C to 35°C (50°F to 86°F)
Hazardous Area ClassificationCSA North American Class 1, Div 2, Groups A,B,C,D, ATEX Zone 2

Available Gases

  • Methane (CH4)
  • Carbon Monoxide (CO)
  • Carbon Dioxide (CO2)
  • Hydrogen Sulfide (H2S)
  • Hydrogen Chloride (HCl)
  • Hydrogen Cyanide (HCN)
  • Hydrogen Fluoride (HF)
  • Ammonia (NH3)
  • Acetylene (C2H2)
  • Ethylene (C2H4)
  • Water Vapour (H2O)


  • GHG Monitoring Applications
  • Aluminium Smelting
  • Fertilizer Manufacturing
  • Carbon Fibre Manufacturing
  • Gold Refining
  • HF Safety
  • Liquefied Natural Gas
  • Pipeline Leak Detection
  • Power Generation
  • Sour Gas
We are here to help

Please don’t hesitate to contact our highly trained and knowledgeable ADT staff to determine what type of system would best fit your needs.

(02) 4577 9347


5 Aspinall Place,
Mulgrave 2756