Instruments - LasIR

LasIR gas measurement instruments are based on the absorption of light in the infrared region of the spectrum.  Their unique light source is a tunable diode laser – a tiny solid state device, the laser emission wavelength of which depends on the composition of the lasing chip, the temperature and the current passing through the chip.  The standard LasIR employs lasers in the red to Near Infrared region (700 – 2700 nm) which are similar to those found in consumer products such as CD players, but the laser wavelength can be tuned to the gas absorption feature of choice.  The light emitted from these lasers can be fiber-coupled, allowing the analyzer electronics to be located hundreds of meters from the actual measurement point.  This is an important feature for measurement locations that are not easy to access or are in hazardous locations.  It is also possible to multiplex the laser to multiple locations (up to 16 as standard), allowing measurement of the gas at multiple locations with a single analyzer.  This makes the system very cost effective.  The same system can be used for in-situ and/or extractive gas measurements in any combinations.

Recently, Unisearch developed its LasIR-QC system employing Quantum Cascade (QC) lasers which emit in the mid-infrared wavelength region (3.5 – 10 microns). Very high sensitivities (parts per billion level) can be achieved with such laser devices.  At present fiber-coupled QC lasers are not commercially available.  This limits the gas measurement to a single location.  LasIR and LasIR-QC analyzers are factory calibrated and do not require field calibration.  The analyzers can be audited for stability and linearity.  Permanently-sealed inline as well as built-in flow-through gas cells are available for this purpose. 

Gas Monitoring Equipment: an analyzer/controller that takes readings at specified intervals in a smoke stack. It enables the manufacturer to keep the waste gas emissions of the manufacturing process within the government-mandated regulation limits and sound alarms when nearing maximum limits. LasIR RB101/ RB102/ RM104/ RM108/ RM112/ RM116 gas analyzers.

Portable Gas Monitoring equipment:  LasIR RP101 units – point monitor analyzers that can be hand carried to make measurements of the target gas in the area.

Environmental Process Monitoring: The analyzer is used in a manufacturing facility.  It aids the manufacturing process by maximizing efficiency, especially when the gas being analyzed is recaptured for sale as a byproduct. All types of Unisearch analyzers are capable of this process.

Fence-Line Monitoring for Perimeter Monitoring:  Used to estimate fugitive emissions from landfills, petro-chemical plants and any industries that may be emitting regulated gases.

Ambient Air Quality Monitoring: can be used by government agencies to determine ambient gas conditions.

Gas Applications:  HCl (Hydrogen Chloride gas) Monitoring, NH3 (Ammonia gas) monitoring, HF (Hydrogen Fluoride gas) monitoring, O2 (Oxygen gas) monitoring, H2O (Moisture) monitoring, CH4 (Methane gas) monitoring, CO (Carbon Monoxide gas) monitoring, CO2 (Carbon Dioxide) monitoring, NO (Nitric Oxide gas) monitoring, H2S (Hydrogen Sulfide gas) monitoring, HCN (Hydrogen Cyanide gas) monitoring, HDO/D2O (deuterated water) monitoring and various Hydrocarbon and Fluorocarbon gas monitoring.

1 to 16-Channel Gas Analyzer
The multi-channel analyzer allows the user to make measurements of a specific gas in up to sixteen locations. On-board memory enables the user to store the data, which can then be loaded into a computer for analysis.

Portable Gas Analyzer
Allows for real-time measurement of target gases in a compact, weather-resistant design suitable for open-path, ambient-air and fence-line monitoring.