Laser Trace Gas and Isotope Monitors



Aerodyne’s family of laser trace gas monitors provide real-time molecular monitoring with fast time resolution (as fast as 10 Hz) and with exquisite sensitivity – in the low parts per trillion range for many species.  These instruments rely on rapid sweep Tunable Infrared Laser Direct Absorption Spectroscopy (TILDAS) implemented with long path Astigmatic Multi-pass Absorption Cells (AMAC).

The Mini Laser Trace Gas Monitor is a compact, single laser trace gas monitor. It is our smallest and most economical laser trace gas instrument. The instrument can be configured to detect many trace gas species including NO, N2O, NO2NH3COCO2, CH4C2H6COSHCHO, O3 and many others. 

The Dual Laser Trace Gas Monitor enables the simultaneous measurement of multiple species using two multiplexed lasers.  Many different molecules can be measured with TILDAS, but only a small subset of that list can be monitored with any specific pair of lasers.  Typically, each laser can measure one to three molecular species.  Depending on which lasers are selected, a dual laser monitor can detect between two to six molecular species.  There are hundreds of possible combinations so it is not feasible to list all the possibilities. 

But, we are happy to design and construct customized configurations as needed.

Here we list just a few of the more popular dual laser combinations:

1) N2O, CO, CO2, H2O, CH4, C2H6                                          6) HONO, HNO3 and H2O

2) N2O, CH4, H2O, COS, CO2, CO                                           7) CH4, C2H6 and C3H8

3) CH4, 13CH4 and CH3D                                                          8) HCN and HCl

4) N2O, 15N14N16O, 14N15N16O and 14N14N18O                 9) NO, NO2 and H2O

5) CO2, 13C-CO2, 17O-CO2 and 18O-CO2                             10) NH3, CO2, O3, N2O, CO and H2O


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