Greenhouse Gas Analyzer (CH4, CO2, H2O) Overview
LGR's Greenhouse Gas Analyzer (model GGA-24EP) is the world's most advanced instrument for simultaneous measurements of methane (CH4), carbon dioxide (CO2) and water vapor (H2O).
Quite simply, no other analyzer provides higher performance. (For details, please see: advantages).
The analyzer is easy to use, low power and rugged which makes it ideal for a wide variety of field and air quality studies and leak detection (e.g., natural gas, coal seam gas, coal bed methane). The ability of the analyzer to simultaneously measure all three gases at high speed and over a wide range of mole fractions makes it an excellent choice for eddy covariance flux and chamber flux measurements. In addition, the instrument automatically reports CH4 and CO2 on a dry (and wet) mole fraction basis (accurately corrects for water vapor dilution and absorption line broadening effects) by analyzing high resolution lineshape measurements without any need for sample drying or post processing.
LGR’s new “Enhanced Performance" series incorporates proprietary internal thermal control for ultra-stable measurements with unsurpassed precision, accuracy, linearity, stability and drift. Moreover, only LGR’s analyzers provide reliable measurements (guaranteed) at concentrations more than 20 times greater than typical ambient levels (to 1000 ppm methane in air, to 20000 ppm carbon dioxide in air, to 10% methane (100000 ppm) with Extended Range option). Furthermore, LGR's Analyzers report measurements over the widest range of ambient temperatures allowing users to easily record reliable data in the field.
The Analyzer uses LGR’s patented Off-axis ICOS technology, a fourth-generation cavity enhanced laser absorption technique. Off-axis ICOS has many advantages over conventional optical techniques (including first generation cavity ringdown spectroscopy) such as being simpler to build, more rugged and alignment insensitive, having a much shorter measurement time, and providing measurements over a much wider dynamic range.
The Analyzer has an internal computer that can store data practically indefinitely on its hard disk drive and send real time data to a data logger via the digital (RS232), analog or Ethernet outputs. As with all LGR analyzers, the GGA may be controlled remotely via the Internet. This capability allows the user to operate the analyzer using a web browser practically anywhere Internet access is available. Furthermore, full remote access provides the opportunity to obtain data and to diagnose the instrument operation without being on site.
For simultaneous measurements of N2O and CO, please refer to LGR's N2O/CO Analyzer. For simultaneous measurements of CO and CO2, please refer to LGR's CO/CO2 Analyzer. For highest portability, please see Greenhouse Gas Analyzer - Ultraportable. For use in eddy covariance flux applications, check out our Eddy Covariance Package. For use in soil flux applications, please ask about our Soil Flux package.