TGA200A
TGA200A
RetiredTrace Gas Analyzer
No longer available to order
This product is retained for service, documentation, and compatibility information.
- Model:
- TGA200A
- Item Number:
- 30472
- Warranty:
- 1 year
Overview
The TGA200A Trace Gas Analyzer measures trace gas concentrations in an air sample using tunable-diode laser absorption spectroscopy (TDLAS). This technique provides high sensitivity, speed, and selectivity. Its simple design allows it to measure one of many gases by choosing an appropriate laser source. The TGA200A features a 1.5 m single-pass optical measurement system that uses a thermoelectrically cooled laser.
The TGA200A is housed in a rugged environmental enclosure designed for use in demanding climates ranging from high-latitude boreal forests, permafrost, and tundra to agriculturally intensive mid-latitude regions and equatorial rainforests. Common applications include slow-gradient or high-speed eddy-covariance measurements of nitrous oxide fluxes or carbon fluxes in the form of methane, or isotopologs of carbon dioxide in all global ecosystems.
Campbell Scientific has been manufacturing TGAs since 1993, and the TGA200A is the result of over 20 years of research and development. Even though previous generations of the TGA (TGA100, TGA100A, and TGA200) have the same core technology, the TGA200A builds upon this succession with further improvements. For more information about the TGA200A, contact Campbell Scientific, Inc.
Key Advantages
Measures CO2 isotopes,
N2O, or CH4
Benefits
- 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 CO<sub>2</sub> isotopes, N<sub>2</sub>O, or CH<sub>4</sub>
- 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
Specifications
- 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
- 5.4 kg
(12.0 lb) for power module with cable
62.8 kg(138.5 lb) for TGA200A
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)
Accessories
(9)15837
TGA Reference Gas Connection, 20 ft Tubing
Orderable16599
TGA Insulated Enclosure Cover
Orderable17882
TGA Air Sample Intake
Orderable18072
TGA Heated Intake Filter
OrderableXDD1
Sample Pump with Fittings, 50 ft of Tubing
OrderablePD1T
Single Tube Sample Dryer, 6 ft
OrderablePD1T-1.5
Single Tube Sample Dryer, 1.5 ft
OrderablePD200T
High-Flow Sample Dryer, 4 ft
Orderable19541
TGA Rotameter (4 to 40 lpm) with 3/8 in. Tube Fittings
Orderable
Common Accessories
(2)15837
TGA Reference Gas Connection, 20 ft Tubing
The 15837 assembly includes a flow meter, needle valve, 6.2 m (20 ft) of tubing, and 1/4 in. Swagelok® fittings at both ends. The 15837 is used to connect the trace gas analyzer to a reference gas tank regulator. A user-supplied reference gas is required to operate the TGA200A.
Orderable16599
TGA Insulated Enclosure Cover
The 16599 is a weather-proof, insulated enclosure cover for the trace gas analyzer. It enables the analyzer to more easily control and maintain its temperature at a constant value. Campbell Scientific strongly recommends using the insulated enclosure cover for every TGA application.
Orderable
Other Accessories
(8)30497
TGA Sampling System
The 30497 is a sampling system designed for low-flow applications that require up to 12 sample inlets. It also allows measurement of up to 4 calibration gases.
Orderable17882
TGA Air Sample Intake
The 17882 air sample intake assembly includes a rain diverter, insect screen, stainless-steel tubing, and mounting bracket. It may be used for low- or high-flow applications.
Orderable18072
TGA Heated Intake Filter
The 18072 intake filter assembly is used with trace gas analyzer systems in low-flow applications, such as profile or gradient measurements. Nominal flow for the three standard orifice sizes (0.007 in., 0.010 in., and 0.013 in.) is 0.26, 0.56, and 0.90 slpm (at sea level).
OrderableXDD1
Sample Pump with Fittings, 50 ft of Tubing
The XDD1 pump is used for trace gas systems that require only a small amount of air to be moved at low pressure. For example, the XDD1 can be configured with a system to sample from a single air intake or to take a subsample from a sampling manifold.
OrderablePD1T
Single Tube Sample Dryer, 6 ft
The PD1T removes water vapor from the air sample to avoid measurement interference and the need to correct trace gas fluxes for water vapor flux. Recommended for low-flow applications, and often used to dry and deliver a sub-sample from a sampling manifold to a trace gas analyzer.
OrderablePD1T-1.5
Single Tube Sample Dryer, 1.5 ft
The PD1T-1.5 is used to remove water vapor from the air sample to avoid measurement interference and the need to correct trace gas fluxes for water vapor flux. Recommended for intakes of low-flow applications, especially when condensing conditions are common.
OrderablePD200T
High-Flow Sample Dryer, 4 ft
The PD200T removes water vapor from the air sample to avoid measurement interference and the need to correct trace gas fluxes for water vapor flux. Recommended for high-flow application such as eddy covariance.
Orderable19541
TGA Rotameter (4 to 40 lpm) with 3/8 in. Tube Fittings
The 19541 measures air flow and is often used to measure high-flow sample air from a PD200T in eddy-covariance applications.
Orderable
Replacement Parts
(10)18058
TGA Spare Heated Intake Filter
The 18058 is used to replace the heated filter assembly on the 18072 Heated Intake Filter when the filter plugs in the field. A used or plugged 18058 may be salvaged by replacing its filter element, pn 17575.
Orderable17575
7-Micron Filter Element
The 17575 is a 7µm pore-size filter element used in the 18072, 18058, and PD625.
Orderable20730
Serial Data Cable, 9-Pin Socket (Female) to 9-Pin Pin (Male)
The 20730 is a 7.6m (25 ft) 9-pin socket (female) to 9-pin pin (male) serial data cable often used to connect an RS-232 port on a sensor or analyzer to an RS-232 port on a datalogger or PC.
Orderable15836
TGA Leak Check Nozzle, 25 ft Tubing
The 15836 includes a 1/4 in. Swagelok® fitting, 7.6 m (25 ft) of tubing, needle valve, and a nozzle for detecting leaks around fittings and tubing of a trace gas analyzer.
Orderable15838
TGA Test Intake, 25 ft Tubing
The 15838 includes a filter, needle valve, and 7.6 m (25 ft) of tubing for use as a sample intake.
Orderable15895
TGA Accessory and Tool Pack
The 15895 is an accessory and tool pack containing a tube cutter, analyzer mirror position gauge, and screwdriver, as well as an assortment of Swagelok® fittings, end wrenches, hex key or Allen wrenches, and hose clamps.
Orderable18148
CAT5e Ethernet Crossover Cable, 25 ft
The 18148 is a 7.6 m (25 ft), unshielded, CAT5e crossover Ethernet cable. It should be used when connecting two Ethernet-capable products directly together, or when connecting one directly to a PC.
Orderable15702
Polyethylene/Aluminum Raw Plastic Tubing, 0.250 in. OD x 0.040
The 15702 is 1/4 in. OD Synflex 1300 tubing that has a high-density polyethylene (HDPE) jacket, overlapped aluminum tape, and ethylene copolymer liner.
Orderable30981
TGA200A Power Module
The 30981 is a power module included with the TGA200A that provides 12 Vdc and 24 Vdc to the TGA200A. The 12 Vdc is used to power the electronics of the trace gas analyzer, while the 24 Vdc is used to power the heaters and fans that regulate the TGA enclosure temperature. A pair of 15 ft power cables with keyed connectors are included with the module.
Orderable22178
TGA100A or TGA200(A) SDM Cable
The 22178 is a 6 m (20 ft) cable used to connect the SDM ports on a trace gas analyzer to the SDM ports on a datalogger. It includes three wires for SDM signals, one wire for ground, and a shield. One end has untinned pigtail wires used to connect semi-permanently to the trace gas analyzer's SDM connector. The other end has tinned pigtail wires used to connect to the ports on a datalogger or SDM hub.
Orderable
Similar Products
(5)
Compatibility
Data Logger Considerations
Data is collected from the TGA200A using a Campbell Scientific data logger. The TGA200A is compatible with data loggers that support SDM communications. In many cases, a sampling system containing a data logger 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 Products
(1)
Related Resources
Documents
- Document
A Low-Power Configuration for a Tunable Diode Laser Trace Gas Analyzer to Measure N2O and CO2 Fluxes Using Flux Gradient Method
View Document - Manual
TGA Series Trace Gas Analzyers
February 2018
View Document - Document
Performance Evaluation of a New, Tunable-Diode Laser Trace Gas Analyzer for Isotope Ratios of Carbon Dioxide Poster
View Document - Document
Frequency Response of a New Closed-Path, Trace Gas Analyzer for Eddy-Covariance Flux Measurements Poster
View Document
Showing 4 of 6 results
See all DocumentsDownloads
- OS and FirmwareTGA200A Firmwarev1.1
January 1, 1990
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!
- Software ApplicationsTGA TECv1.1
December 2, 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!
Services Available
- Repair
- Yes
- Calibration
- No
- Free Support
- Yes