Aerodyne Research, Inc.

- Dual Laser Trace Gas Monitor



Sensitive, rapid, highly specific and continuous measurements of multiple atmospheric trace gases in ambient air.

  • Extremely sensitive detection of a wide variety of atmospheric trace gases, such as: methane, nitrous oxide, nitric oxide, nitrogen dioxide, carbon monoxide, carbon dioxide, formaldehyde, formic acid, ethylene, acetylene, carbonyl sulfide, acrolein, ammonia and others.
  • Combustion monitoring and characterization.
  • Isotopic monitoring of CH4 and N2O for source/sink characterization.
  • Eddy Covariance measurements.
  • Fast response plume studies.
  • Air quality monitoring.
  • Mobile measurements from ship, truck, and Aircraft platforms.

  • Absolute trace gas concentrations without calibration gases.
  • Fast time response.
  • Free from interferences by other atmospheric gases or water vapor.
  • Turnkey and unattended operation.
  • Cryogen free.
  • Ready to be deployed in field measurements and on moving platforms.
  • Two lasers allow simultaneous measurement of more species.
  • Optical pathlength of either 76 meters or 210 meters.

Extremely high precision and accuracy is obtainable with CW-RT QCLs.

Table 1 Some atmospheric trace gases which can be monitored with CW QC lasers. For each species the optimal wavelength (cm-1), the nominal detection precision (ppt in1 sec) and the detection limit (2 sigma in 100 sec) are givenbased upon a sampling cell with pathlength of 210 m.

  • Data outputs : Local storage, internet, RS232, analog output
  • Data rate : 1 to 10 Hz (depends on specific instrument and vacuum pump)
  • Instrument operation : Autonomous and/or remote control
  • Options : Replacement lasers to access additional molecules On site training

Mechanical specifications for dual QCL

  • Dimensions : 530 mm x 660 mm x 710 mm (W x D x H)
  • Weight : 72 kg
  • Electrical Power : 500 W, 120/240 V, 50/60 Hz (with Varian IDP-3 vacuum pump)

Multipass cell

  • Choice of 76 meter standard cell (V=0.5 liters) or 210 meter “Super Cell” (V=2liters)

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