Carbon Dioxide Analyzer (CO2, H2O) Overview
Insensitive to other atmospheric gases, the Carbon Dioxide Analyzer measures carbon dioxide and water vapor in ambient air with unsurpassed accuracy and precision. All without the need for frequent external calibration. The instrument can store data practically indefinitely on its internal hard disk drive and can send real-time data to a data logger through its analog, digital (RS232), and Ethernet outputs allowing unattended long-term standalone operation.
Based on high-resolution cavity enhanced direct-absorption spectroscopy, the instrument offers negligible zero and span drift and a significantly reduced need for regular calibration with expensive reference gases (compared with conventional instruments). The Carbon Dioxide Analyzer is designed for applications that require the performance of a reference laboratory without the need for regular calibration with expensive gas standards.
LGR’s Carbon Dioxide Analyzer is available in different packages to allow users to select the configuration most suitable for their needs. LGR’s standard rackmount package fits in a 19”-wide instrument rack and requires an external keyboard, mouse, and video monitor. For highest performance, the Carbon Dioxide Analyzer is available in LGR’s “Enhanced Performance” package. The EP package incorporates proprietary internal thermal control for ultra-stable measurements with unsurpassed precision, accuracy and drift. For users wishing maximum portability, LGR’s new “Ultraportable” series provides unparalleled ease of transport for users to carry the instrument anywhere.
The analyzer uses LGR’s patented Off-axis ICOS technology, the fourth-generation cavity enhanced absorption technique, which employs a high-finesse optical cavity as the measurement cell. LGR’s technology has many proven advantages over conventional first-generation cavity ringdown spectroscopy (CRDS) techniques. In brief, since the laser beam does not have to be resonantly coupled to the measurement cell (i.e. precise beam alignment is not critical), LGR Analyzers are relatively inexpensive, simple to build, and inherently robust thermally and mechanically. In addition, since LGR’s technology can record reliable absorption spectra over a far wider range of optical depths (absorbance values) compared with CRDS, LGR Analyzers provide measurements over a much wider range of mixing ratios (gas concentrations). Finally, due to the ease and simplicity of recording and quantifying the measured spectra using LGR’s Off-Axis ICOS, LGR Analyzers display the entire absorption spectra to the user in real time allowing for immediate system diagnostics and performance validation.