TGA200A Trace-Gas Analyser
High Speed, Low Maintenance, Field Rugged
Measures CO2 isotopes,
N2O, or CH4
wetter wasser energie gas flux & turbulence bauwerke boden

Überblick

Der TGA200A Spurengasanalysator misst Spurengaskonzentrationen in einer Luftprobe durch Absorptionsspektroskopie mittels abstimmbarer Laser-Dioden (tunable-diode laser absorption spectroscopy, TDLAS). Diese Technik ermöglich große Empfindlichkeit, Schnelligkeit und Genauigkeit. Das einfache Design ermöglicht es, eins von verschiedenen Gasen zu detektieren, indem man ein passende Laserquelle wählt. Der TGA200A enthält ein optisches Messsystem mit einem 1,5m langen Messpfad und einen thermoelektrisch gekühlten Laser.

Der TGA200A befindet sich in einem robusten Gehäuse und kann damit in verschiedenen Klimazonen eingesetzt werden, z.B. in großen Höhen, Permafrost und Tundra bis hin zu tropischen Regenwäldern. Typische Anwendungen sind langsame Gradienten oder schnelle Eddy-Kovarianzmessungen von Distickstoffmonoxid, Methan oder Kohlendioxid in allen globalen Ökosystemen.

 Campbell Scientific baut TGAs seit 1993. Der TGA200A ist damit das Resultat von über 20 Jahren Entwicklung und Erfahrung. Die vorhergehenden Geräte (TGA100, TGA100A und TGA200) basieren zwar auf derselben Technologie, beim TGA200A gibt es aber zahlreiche Verbesserungen.   

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Funktionen und Vorteile

  • Small sample cell volume that provides superior frequency response
  • Thermoelectrically cooled laser; no cryogenic cooling required
  • Laser upgrades available to existing TGA customers; contact Campbell Scientific for more information
  • Choice of laser sources to measure CO2 isotopes, N2O, or CH4
  • Optically simple measurement system that does not require cleaning of the optical cell in the field
  • 500 Hz measurement rate that supports excellent synchronization
  • Rugged environmental enclosure that allows the TGA200A to be placed outside on the ground
  • Simple Windows user interface for setup, configuration, and real-time monitoring
  • Complete greenhouse gas measurement flux solution provided by combining one or more TGA200As with Campbell Scientific’s sonic anemometers, data loggers, gas analyzers, closed-path gas analyzers, or eddy-covariance system
  • Advanced sampling systems also available for low-flow applications such as profile, gradient, or user-supplied chamber measurements

Bilder

TGA200A side view (top of enclosure removed)
TGA200A side view (top of enclosure removed)
TGA200A side view (top of enclosure removed)
TGA200A top view
TGA200A laser end of the optical bench
TGA200A detector end of the optical bench
TGA200A side view

Technische Beschreibung

This product is sold and supported directly through our US office see www.campbellsci.com/contact for contact details.

Spezifikationen

Measurement Rate 500 Hz
Sample Cell Volume 200 mL
Dimensions 211 x 47 x 55 cm (83 x 18.5 x 21.5 in.)
Weight
  • 62.8 kg (138.5 lb) for TGA200A
  • 5.4 kg (12.0 lb) for power module with cable

Typical Measurement Noise

-NOTE- Preliminary Results

Allan deviation with 100 ms averaging time.
Nitrous Oxide (N2O) - Laser pn 30478 1.5 nmol mol-1
Methane (CH4) - Laser pn 30477 7.0 nmol mol-1
Nitrous Oxide (N2O) - Laser pn 31121 1.8 nmol mol-1
Carbon Dioxide (CO2) - Laser pn 31121 0.3 μmol mol-1 (based on the 13C16O16O isotopolog)
Carbon Dioxide (CO2) - Laser pn 31119 0.15 μmol mol-1
δ13C - Laser pn 31119 0.5 ‰
Carbon Dioxide (CO2) - Laser pn 30877 0.5 μmol mol-1
δ13C - Laser pn 30877 2.0 ‰
δ18O - Laser pn 30877 2.0 ‰

Power Requirements

Analyzer (TE-cooled laser) 90 to 264 Vac, 47 to 63 Hz, 34 W (max) 22 W (typical)
Heater 90 to 264 Vac, 47 to 63 Hz, 150 W (max) 50 W (typical)

Kompatibel mit

Please note: The following shows notable compatibility information. It is not a comprehensive list of all compatible products.

Datenlogger

Product Compatible Note
CR3000
CR5000 (retired)
CR6

Additional Compatibility Information

Datalogger Considerations

Data is collected from the TGA200A using a Campbell Scientific datalogger. The TGA200A is compatible with dataloggers that support SDM communications. In many cases, a sampling system containing a datalogger is ordered with the TGA200A. Contact Campbell Scientific for more details about sampling systems and compatibility with user-supplied components, such as leaf chambers.

Compatible Contemporary Dataloggers

CR1000 CR3000 CR6

Compatible Retired Dataloggers

CR5000

Dokumente

Downloads

TGA200A Firmware v.1.1 (1.1 MB) 02-12-2015

The TGA200A firmware is used to support the TGA200A or prior TGA models that have been upgraded to use a thermoelectrically cooled (TEC) laser.

The TGA firmware includes the OS that must be uploaded to the analyzer's CPU board before operating a TEC laser.

Warning: Download of TGA200A Firmware should only be done for use with TGA models running TEC lasers!

TGA TEC v.1.1 (10.6 MB) 02-12-2015

The TGA TEC Support Software is used to support the TGA200A or prior TGA models that have been upgraded to use a thermoelectrically cooled (TEC) laser.

TGA TEC is a user-interface software package that allows users to connect to the analyzer, set settings, and monitor real-time analyzer performance.

Compatibility: 
TGA TEC 1.1 is compatible with the Windows 7 operating system or newer.

Warning: Download of TGA TEC v1.1 should only be done for use with TGA models running TEC lasers!